2012 Toyota Prius Brakes Problems

Your brake booster/actuator failed without warning while driving on the freeway, making it significantly harder to stop your car. You didn't realize what caused the problem until a repair shop diagnosed it as a failed brake booster/actuator. The repair will likely involve replacing the brake booster and/or actuator assembly.

Your Prius's brake system is showing signs of failure with multiple warning lights illuminated (ABS, Brake, Traction Control, and Master Warning). You're hearing frequent buzzing sounds from the brakes, especially when stopped or at low speeds, which suggests the brake booster or actuator isn't maintaining proper hydraulic pressure. This is a serious safety issue because it could reduce your braking power and increase your stopping distance. Repairs will likely involve replacement of the brake booster and/or brake actuator assembly.

While driving in traffic, your brake system suddenly failed—multiple warning lights came on (brake, ABS, traction control), the car beeped, and you lost power brake assist. Your brake pedal felt soft at first, then suddenly became hard partway through, and the car didn't slow down as expected when you pressed the pedal. You barely avoided hitting the car in front of you. The failure was serious enough that the vehicle had to be towed. The issue likely involves the brake booster, ABS module, or brake pressure control system and may require professional brake system diagnosis and repair.

Your brake system failed suddenly while driving, requiring extreme force on the brake pedal to stop the car—a dangerous situation that nearly caused a crash. The dealership diagnosed this as a brake actuator and brake booster failure, which they indicated is a known issue in Prius models, and quoted $3,000 for repair. The fix will likely involve replacing the brake actuator and brake booster assembly.

Your brakes became unresponsive while driving at normal city speeds, causing your ABS system to fail and your brake, ABS, and engine warning lights to come on. You were able to avoid a collision by manually pumping the brakes. A mechanic found that your brake actuator system had failed, which has made your stopping distance much longer and your braking unreliable and unpredictable. The brake actuator system will likely need to be replaced or repaired by a professional mechanic.

While driving 60 mph on the highway, your car's ABS and traction control lights came on and your brakes suddenly lost effectiveness with no warning. You were able to safely slow down and stop, but this could have caused a serious accident in heavy traffic. The dealership diagnosed a brake booster pump assembly failure (DTC code 1391) and charged $3,000 to repair it. This same failure pattern has been reported across multiple Toyota hybrid models from 2010-2015, suggesting a widespread defect in the brake system design.

Your car's brake system may have failed, causing the ABS, traction control, and brake warning lights to illuminate simultaneously. You might notice the brake pedal feels soft and requires more pressure to stop the vehicle, and the brake actuator assembly may make a hissing noise—all signs of a leak in the brake actuator system. This is a safety issue that requires the brake actuator assembly to be replaced with a new unit.

Your brake actuator and ABS accumulator failed while you were driving on the highway at 70 mph, causing you to lose brake boost and putting you in a dangerous situation. This appears to be a known issue affecting multiple 2012 Prius owners, as confirmed by diagnostic code C1391. The repair will likely involve replacing the brake actuator and ABS accumulator assembly.

Your brakes failed while merging on the interstate, triggering multiple warning lights including the brake system warning light and ABS light. A Toyota dealership diagnosed a faulty brake booster with an internal accumulator leak that requires $4,295.68 to repair. While Toyota issued a customer support program covering this part for two years, your vehicle's issue was discovered after that coverage expired, leaving you responsible for the full repair cost. The fix requires replacing the brake booster pump assembly.

Your brake booster pump failed while you were driving, causing warning lights to appear and unusual noises from the vehicle. The dealer diagnosed the problem and said the brake booster pump needs to be replaced, but the repair wasn't covered because your extended warranty had expired. The repair will likely involve replacing the brake booster pump assembly to restore normal brake operation.

Your Prius triggered a check engine code (C1391) indicating a problem with the antilock brake system — specifically an abnormal leak in the brake accumulator. The recommended repair is to replace the brake booster pump and assembly, which costs over $1,000 in parts alone. While Toyota's extended warranty would normally cover this (10 years/150,000 miles), you're past the 10-year mark even though you're under the mileage limit. Replacing the brake booster pump and assembly will be necessary to restore proper brake function.

Your traction control, ABS (anti-lock braking system), and brake warning lights all came on at the same time. This suggests a problem with your braking or traction control system that needs immediate diagnosis. A mechanic will need to scan your vehicle's computer for fault codes to identify the exact issue.

While driving on the freeway, you applied the brakes and felt them become soft and unresponsive. At the same time, your ABS, BRAKE, and traction control warning lights came on. Your mechanic identified a problem with the brake booster and actuator (diagnostic code C1391). The fix will likely involve replacing or repairing the brake booster and/or brake actuator components.

C1391 - Abnormal Leak in Accumulator

My Prius, along with the thousands of others this has apparently happened to according to a quick online search, has had the C1391 code appear, indicating a failed brake actuator and accumulator. It, like the thousands of Priuses from this generation, have had these faulty brake pump systems develop a leak and begin to fail. You will hear a whirring and hissing noise constantly when it starts going out, eventually resulting in a Christmas tree of dash warning lights and reduced braking due to a failsafe kicking on. Toyota apparently issued a "customer service bulletin" that is now ineffective as it only covered if you had the system fail within 10 years of manufactor or 150,000 miles AND had the codes appear. Most people's Priuses go out AFTER this, unless you're driving it like you stole it. It is a hefty repair too, being quoted at over $3000 at the Toyota STEALSRSHIP!! I have since gone to an independent mechanic and had one portion replaced in hopes that would fix the issue, but it turns out both the actuator and accumulator are needed to be replaced, which is extremely expensive, more so for the actuator than the accumulator, but still exorbitantly expensive. In conjunction with this, Toyota further added difficulties by making their paet numbers they have listed different from the mark number engraved on the part, so buying third party is made a bigger hassle by this as they will not know for certain the part number. This is a huge safety concern as this affects the vehicle's ability to brake. Their service bulletin was the equivalent of offering people bandaids years before they'd be anywhere to getting a cut!! Please investigate and please please PLEASE lead to Toyota issuing an actual recall, regardless of miles or year from manufacture. More and more Priuses are reaching the time where this will occur and it's a huge safety concern, if not an environmental concern when people start disposing of Priuses due to this massive failure with hefty repair bills.

The brake booster and brake booster pump assemblies had to be replaced at the dealership. Parts are not available for inspection as far as I know. We were warned by the dealership that we should not be driving the car because the brakes could completely fail at any moment if we didn't have parts replaced. That would have been dangerous for us and anyone else sharing the road with us. On a Sunday, leaving our house and driving down our street, three lights turned on on the dashboard display - traction, brakes, and ABS - and the brakes felt softer and less responsive than normal. After having gotten a diagnosis and repair estimate from the dealership, we carefully drove the car home to consider our options. We tried to get a second opinion from a trusted mechanic, but it sounded like the parts we needed were tightly monitored by Toyota and the original estimate for the repair from the dealership was above $3,000. After a few days, the dashboard warning lights turned off and the brakes felt back to normal. The whirring noise which had been happening roughly every 4 seconds had slowed to roughly every 10-12 seconds. We were told that this turning off of the lights sometimes happened, but that the issue was still the same. Prior to these lights turning on, the car had been making a lot of the whirring noises for some time, but it had never thrown the codes before that would have been picked up by a mechanic. At the time, we didn't recognize the sounds as a sign of an impending commonly recognized failure - only after doing some research did we find that this was a very common problem for a lot of Prius owners, especially for the given year and number of miles we had. There is an "extended warranty" for this part and repair, but while we were within the mileage limit, we were outside of the time limit and we were told at the dealership that Toyota would be inflexible about paying for the repairs.

While driving my 2012 Toyota Prius, the traction control, brake, and ABS warning lights all came on at the same time. I used a home OBD scanner but it didn’t show any diagnostic codes. After some research and inspection, I discovered that the issue was related to a faulty brake booster and accumulator—something I’ve learned is a common problem with this model. I was relieved to hear that Toyota has an extended warranty on these parts. However, last night while driving, the brakes suddenly stopped functioning properly. It became very difficult to slow down, which put me in a dangerous situation. I’m deeply concerned about the safety risks this defect poses and believe this issue deserves further attention.

The contact owns a 2012 Toyota Prius. The contact stated while driving 30 MPH, the ABS and traction control warning lights illuminated. The contact stated that while attempting to depress the brake pedal, the vehicle hesitated while responding. The contact stated that there was a buzzing sound coming from accumulator pump. The dealer was contacted. The contact stated that the failure had occurred on several occasions. The vehicle was taken to Nico's Auto Repair where it was diagnosed and determined that the brake booster and accumulator assembly needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The approximate failure mileage was 140,000.

I am reporting a sudden and dangerous failure of the brake booster in my 2012 Toyota Prius. While driving, I experienced a loss of braking power, accompanied by several warning lights including ABS, Brake, and the Traction Control system. The brake pedal became extremely stiff and unresponsive, significantly increasing the stopping distance. This failure nearly caused an accident, as I was unable to stop quickly enough when traffic slowed unexpectedly. This issue happened without warning and is a serious safety risk. I later discovered this is a common and widely reported defect in 2010–2015 Toyota Prius models. Toyota issued an extended warranty (Customer Support Program ZE3) to cover this known brake booster defect — but only for vehicles within 10 years or 150,000 miles. While my Prius has well under 150,000 miles, it is just over 10 years old, which disqualifies me from coverage, leaving me with a repair estimate over $4,000 for a well-documented manufacturer defect. This seems grossly unfair, especially for responsible owners with low-mileage, well-maintained vehicles. Toyota’s refusal to issue a formal recall and instead offering only limited support puts millions of Prius drivers at risk. A brake system failure of this kind should qualify as a safety defect and trigger a mandatory recall, not a quietly limited program with arbitrary expiration dates. I urge NHTSA to investigate this issue further and consider a recall of the defective brake booster system in these Prius models to protect public safety and ensure fair treatment for affected owners. Thank you.

This Prius Hybrid is my [XXX] mother's car which she got thinking is was a very safe and reliable vehicle. She purchased the vehicle from a Toyota dealership here in Maine on [XXX]. Last week while driving down the road, all of a sudden, every brake warning light lit up the dashboard and the brakes became extremely unresponsive. It scared us both to death but thank goodness, I was driving when this happened. After doing some research, I have discovered that this a very well known brake issue with the 2010-2015 Prius cars. I cannot for the life of me understand how this major safety defect has not been made into an actual safety recall. I did contact Toyota customer service and they will not help us at all. Even though my mother has only had the car for just under 9 years and is well under the allotted mileage, they said their Customer Support Program (ZJB) only covers 10 years from the day the car was first driven after production. Her Prius now is inoperable and the repair costs are in the thousands. We are so incredibly disappointed with Toyota and the safety board for allowing this to happen to all of the defective Prius owners. I hope you will reconsider and do the right thing and recall these cars before someone does get into an accident where they are injured or killed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2012 Toyota Prius V. The contact stated that while driving at an undisclosed speed, the service brakes warning light illuminated. The vehicle was taken to the dealer, who diagnosed failures with the brake booster assembly and brake booster pump assembly. The vehicle was not repaired. After investigating the failure, the contact related the failure to Customer Satisfaction Program: 21TE01. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was unknown.

Brake booster failures are a common safety issue with 2012-2015 Toyota Prius' this one included is starting to fail which can lead to ABS deactivating and shorter braking distances. There was a recall for this part but most tend to fail after the warranty period. Leaving many vehicles unrepaired and dangerous.

My brakes began making a funny noise when I used them. I only have 80000 on the car and do regular maintenance. I took it in because it seemed the brake pedal was getting spongy as well. They ran in through diagnostic tests and determined the braking module or brake booster/master assembly was bad. This seems to be an issues with Toyota and should be addressed immediately. It is an expensive fix for a low mileage car

47050-47180 47070-47060 Both failed at same time along with many others getting quotes of 3500-4000 to replace no brake control or anti lock brakes

Toyota installed known faulty brake booster and master cylinder systems in Prius C models manufactured 2012-2014. Knowing these systems would fail, but not wanting to pay for their mistake, they created a basically secret "extended warranty program" for owners to get their brake booster replaced ONLY IF for a specific 2 year time frame their brakes failed with a certain DTC code. Knowing that many prius owners would not actually receive the notification nor had driven their vehicle enough miles for the braking system to fail, they got away without having to correct their issue. The brakes literally just fail and stop working in the middle of the highway, causing extreme safety concerns and accidents with no responsibility from Toyota.

Brake system went out suddenly making the car brakes not work

Subject: Safety Complaint – 2012 Toyota Prius Brake Booster Failure (C1391 Code) I am writing to formally report a serious safety defect in my 2012 Toyota Prius involving the brake system. Recently, my vehicle’s dashboard displayed the ABS, traction control, and brake warning lights, indicating a critical braking issue. Upon diagnostic testing at a Toyota dealership, the vehicle was found to have DTC Code C1391 – Brake Booster Leak/Accumulator Failure. I later discovered that Toyota acknowledged this defect and issued a Customer Support Program (CSP) to cover repairs. However, I was never notified, despite always servicing my vehicle at Toyota dealerships. When I contacted Toyota, they confirmed that my vehicle has been flagged in their system, yet I was never received anything in the mail about the potential brake failure. Toyota initially set the CSP expiration in 2023, later extending it to May 2025, but they have refused to repair my vehicle under this program. The estimated repair cost is $4,680.09 along with a diagnostic fee of 206.09, which is a significant financial burden for an issue stemming from a known manufacturing defect. Most importantly, this is a major safety hazard: My brakes now produce a loud hissing sound when pressed, indicating imminent failure. If the brake booster fails completely, it could result in a loss of braking power, endangering myself, passengers, and others on the road. Numerous Prius owners have reported similar failures, yet Toyota has not issued a formal recall. I urge NHTSA to investigate this defect further and push Toyota to issue a full recall instead of a limited support program that many owners were unaware of. Given the life-threatening nature of brake failure, Toyota should not be allowed to limit coverage or deny repairs for a problem they have long recognized. I respectfully request that NHTSA take action to ensure Toyota addresses this safety defect responsibly.

My break actuator goes off every 12 seconds continuously. There is no warning sign in the dash board. Brought the vehicle to the Toyota dealership and had it checked out. The dealership says there is no problems according to their analysis. But the actuator continuously goes off every 12 seconds and the dealership said this was "normal" and charged me the service fee. I am seriously concerned because I drive this car with my child and I am reading that this is a bad sign and that the breaks might fail at any time. Since the dashboard doesn't give me a warning sign and the dealership says there's no problems based on their diagnostics, even if everyone can hear the actuator go off ever 12 seconds I guess I can safely drive this vehicle...it seems like driving a ticking disaster waiting to happen.

ABS pump and master cylinder malfunction. Pump is running very often. Hard braking makes it sound abnormally.

Brakes failed

The contact owns a 2012 Toyota Prius. The contact stated while driving 60 MPH, there was an abnormal grinding sound coming from the brakes while the brake pedal was depressed. The brakes, the traction control, and the ABS warning lights were illuminated. The vehicle was then taken to an independent mechanic where it was diagnosed with brake booster and master cylinder assembly failure. The vehicle was not repaired for the most recent failure. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 106,019.

I accidentally slid out into traffic as my brakes failed as I pulled up to stop at the edge of the parking lot. I was nearly hit driver's side on a pickup. Fortunately, it was able to swerve around me and there was no immediate following vehicle. I was able to pull out and back into a nearby parking lot to address the problem with my brakes. Upon speaking to my mechanic and local Toyota Dealership I was informed that the brake booster/accumulator had failed and that this was a known issue on my vehicle. Toyota extended a special warranty on these parts several times but did not notify owners of the safety risk. That warranty coverage has expired for my vehicle. I believe it is an inherent safety risk and they obscured it by covering the parts under this extended warranty. I believe they should be recalled and at the least owners should be warned of the risks. All communications were done over the phone or in person, I have no electronic records. I submitted an identical request on my 2011 Prius by accident, as I used it's VIN when I meant to use the VIN on my 2012 Prius. Regardless, I am now concerned for my safety in both vehicles.

The brakes on this Prius started to make weird noises. Because it is a hybrid, I wasn't sure if it was normal. After searching online, it is a known issue. The car has just under 76,000 miles on it. It might be worth $7000 on a good day. Toyota wants to replace two brake parts, numbered 47050-52020 and 04006-74152 to a tune of $2700. According to a Toyota bulletin, this job should take 2.3 hours. For that amount of work, my local Toyota shop wants almost $2000 in labor. My car was seen by the local shop (being on an island, it is literally the only Toyota shop that this car can be seen) when the "customer support program" 21TE01 was in place and they did nothing. Now, the time window has disappeared, even though we only have half of the maximum number of miles to get the repair. Toyota should be ashamed of themselves.

My wife was driving home and four dashboard error lights illuminated (Brakes, ABS, SLIP and a yellow light_) The brakes suddenly "went soft" (in her words), and it freaked her out. I now learn that I need to have the brake master cylinder and a booster pump assembly replaced at a cost of over $4,000. Ouch!

Failure in ABS system

Vehicle has good break pads and rotors. Also the vehicle turn on the ABS the Break and the slippery lights on. When the car was scanned is show code C1391" which indicates a problem with the brake accumulator within the system, often requiring replacement of the brake booster and accumulator assembly. I can't drive the car and other people with same car on 2011 year has the same issue

While driving suddenly the ABS and vehicle traction lights came on and the car became very slippery, was unable to stop without an excessive amount of space between the car in front of me and me. While looking at the car, I realized the actuator brake booster pump. I then found multiple websites and forums dedicated to people with the same problem ( brakes suddenly not functioning correctly while driving) with the same model car as I have, and there was a service bulletin that shows Toyota acknowledged there was a problem ( and a fix) but with the date of the bulletin and the date it was to be fixed within, it was near impossible to actually have it fixed. My car has 87,000 miles and the brake system is dangerous

My ABS actuator failed. Turns off the boosted braking and cruise control. This is a known issue in Toyotas and it always happens outside the warranty window. This is putting my safety at risk as the brakes don’t work as they’re supposed to

My Brakes almost caused me to crash on Jan 18th. I'm driving down the highway and traffic comes to a complete stop. I started braking but my abs, stability control and brake light come on. When this occurred I had to push the brakes to the floor just to stop. My brakes were very unsafe and unpredictable. I had to drive way below the speed limit to make it home, keeping at least 8 car lengths between me. I inspected the vehicle when I made it home. Their is noise coming from the driver side firewall. Something is consistently turning on and off and a slight click after each cycle, every 5 seconds approximately. I was told that it was my abs pump or brake actuator. This is unacceptable and dangerous to all consumers. The fact there was no warning that occurred in a safer environment. I'm so thankful my kid wasn't driving it. Why isn't this a recall? I don't understand how something this dangerous is not a factor to the consumers. I have researched and found many cases that consumers have had a similar issue. This issue is not like brake pads. Their is a clear warning when its time to change brake pads. I honestly would like to see toyota to fix this issue.

Brake booster pump assembly. Toyota has sent a notice of extended warranty for this vehicle which has expired. Without repair, the brakes will loose compression and stop working.

The brake actuator has failed in this 2012 Prius with 135,000 miles. No issues were noticed while braking, however, when starting the car, the ABS, Brake and Traction Control warning lights lit up. The Toyota Dealership said this is a failed Brake Actuator and quoted $3,800. We have learned there is a secondary warranty on this part due to constant failures that Toyota issued, however, this warranty only applies to Prius up to 150,000 miles or 10 years from initial use, whichever comes first. This is unfair to most Prius users as this is a common problem happening, but typically happening after the 10 year mark.

The ABS, Brake, and Traction Control lights all illuminated while driving. I took it into a local shop, the computer scanned "brake accumulator leak". The accumulator is buzzing every 10 seconds and the brake fluid needs topping up. Now there is a brake fluid puddle under the car. The fix is to repair the brake master cylinder and replace the brake booster pump. The car is a 2012 with 110,000 miles. This is a known Toyota Prius vehicle issue but they decline to service it and can the brakes can fail.

Anti lock brake malfunction. Code c1391 leak in brake accumulator. This seems to be a common code for brake issues with Prius. The cost to repair is significant, more than the value of the car. This is a certain safety issue that needs to be addressed. This is clearly a Hazzard and will cost lives to those who cannot afford the cost of repair.

The issue is my brakes failed on me all of a sudden. My abs light, traction control light, and brake light came on out of nowhere. Suddenly didn't have brake pressure. Had to pump the brakes a few times before the car would stop. Luckily I didn't hit anything or anyone. I brought the car to Prius specialist and they diagnosed it saying it was the ABS Actuator Pump Assembly and Master Cylinder. They said it is quite common in the 3rd generation of Prius'. I contacted Toyota North America and they said they had a recall on the parts but it ended Dec 31st, 2021. I bought the car in 2022 unknowingly. Was quoted around $4000 to repair it parts and labor. This is a safety issue that should not be limited to time. Luckily I was not on a Freeway or anywhere where I could have done damage. This issue is a hazard to myself and other people on the road. Toyota needs to resolve this.

Without warning, the ABS, Traction Stability, Brake and other lights lit up and I lost braking on the highway. Luckily, I was in very light and narrowly avoided a crash. I was able to get home with far less braking power and no regenerative braking. Since then, I have researched the problem and found that this is an extremely common issue. I can remedy it for ten or twenty minutes by putting the car in DIAG mode and pumping the brakes, but it will do it again, and again. I need a new accumulator and ABS module, and the dealer wants thousands for it. I cannot afford it and it is a known flaw and a safety issue. I take my daughter to school in this car, thankfully it's nearby, but it's terrifying. Our other Prius has no issues, and I understand that Toyota has repaired other cars under a warranty program of which I was never notified.

2012 Toyota Prius 5 with 105k miles. ABS, Brake, and Traction Control lights all illuminated while driving to work. Drove to the dealership and had their service department run a diagnosis for 200$. Their scanner reported CODE C1391, and that a new BRAKE PUMP and MASTER CYLINDER ASSEMBLY would need to be replaced for a total cost of $4,000. Toyota has a Customer Support Program Bulletin indicating that certain 2010-2015 Toyota Prius will experience internal malfunctions and require repair for BRAKE BOOSTER AND BRAKE BOOSTER PUMP ASSEMBLIES. Since this is a safety issue, Toyota should extend the program indefinite and repair their faulty systems.

ABS Pump and Actuator failed at 100,000 miles. Traction control, ebrake, ABS light came on while driving. Many other stories of Toyota vehicles with the same failure.

I was driving down the interstate with my cruise control on when all of a sudden the cruise control disabled and warning lights came up on my dash board. It still drove fine for several weeks. On Friday December 6th, I was going down the road and had to press the brake slightly for a car turning. When I pressed the brake, the car went into a spin. It spun a couple of rotations. Luckily I was on a wide part of the highway and no oncoming cars were approaching. Toyota had a recall for the same code and parts for the 2010 Prius but did not include the 2012 Prius. They just had an alert which I did not receive because the notice went to the former owner. However, I did take my car in for oil change and diagnostic but they did not tell me that there had been a problem with these parts. They want almost $4,000 to repair it. Why would they not include ALL vehicles with this same part. If it fail on one, it will fail on another. I think Toyota should make them all good. Please make them issue a recall for all of these parts. I took my car to a mechanic but because of special tools needed, you have to take your car to the dealership for repairs. When I called the dealership, I was told I needed a break booster pump and a brake master cylinder for a total of $3, which is ridiculous on a $7,000 car.

I write to add my voice to the litany of complaints in support of NHTSA investigation DP23005. While on an road trip recently the ABS, Traction Control, and Brake warning lights all came on. The brake felt squishy and didn't seem to be functioning as confidently as before. I altered my driving (giving plenty of distance, lowering my speed) so that in the event the brakes quit working I would have an exit strategy. I took it to my Independent Service Center as soon as possible who found the code C1391 and diagnosed the need to replace the master cylinder / booster assembly for several thousand dollars. Of course I must do this in order to remain safe but this is clearly a safety issue that could have been catastrophic. Meanwhile I am out of a car for several weeks until the part arrives and out of at least $2000 as quoted by my mechanic ($1640 for the part). The car only has 146,500 miles on it so otherwise would have plenty of life left in it. I'm filing this complaint to add my voice to the open petition and toward the NHTSA's investigation in strong support of holding Toyota responsible for PREVENTING injury and death through a proper recall, as well as against burdening the car owner with the costs of making up for Toyota's negligence on this issue. At the least they need to cover the cost of these necessary safety repairs when they are warned by the lights and reinstate their warranty extension for this issue

I write to add my voice to the litany of complaints in support of NHTSA investigation DP23005. While on an interstate road trip recently the ABS, Traction Control, and Brake warning lights all came on. The brake felt squishy and didn't seem to be functioning as confidently as before. I altered my driving (giving plenty of distance, lowering my speed) so that in the event the brakes quit working I would have an exit strategy. I took it to my Independent Service Center as soon as possible who found the code C1391 and diagnosed the need to replace the master cylinder / booster assembly for several thousand dollars. Of course I must do this in order to remain safe but this is clearly a safety issue that could have been catastrophic. Meanwhile I am out of a car for several weeks until the part arrives and out of at least $2000 as quoted by my mechanic ($1640 for the part). The car only has 146,500 miles on it so otherwise would have plenty of life left in it. I'm filing this complaint to add my voice to the open petition and toward the NHTSA's investigation in strong support of holding Toyota responsible for PREVENTING injury and death through a proper recall, as well as against burdening the car owner with the costs of making up for Toyota's negligence on this issue. At the least they need to cover the cost of these necessary safety repairs when they are warned by the lights and reinstate their warranty extension for this issue ("POL18-03") which expired for my vehicle in August of 2021.

have suddenly brake failture, w code c1391, it problem persist car do not stop by pressing brake , it is too dangerous to drive this car!!!! what you can help me w this recall or rebate option for brake repair?

The Toyota Prius of this generation has a known defect in the brake booster pump assembly. About 2 weeks ago the dash lights came on for ABS, Traction control, general warning light. The brakes work but feel soft, and a motor sound pulses behind the steering column every 8-10 seconds. My mechanic pointed out it is a known problem where the ABS booster pump has a faulty valve that doesn’t allow proper pressure to build to engage ABS system. I cannot afford the Repair: $3890 for master cylinder and brake booster. My concern is that most people can’t afford this repair and without a functioning ABS system, people are put at risk from this generation of Prius. Toyota did offer a customer service program acknowledging the issue, but that program only helped if these issues occurred before 2022. With the known issue, why wasn’t a recall required? Toyota should be required to address this safety issue. How many of these Prius are on the road where customers are expected to perform a $4,000. Repair to keep up the safety standards. The car is available for inspection upon request. Thank you.

I was driving and all of a sudden the emergency brake light, the ABS brake light and a couple more turned on and I had no more brakes. I had just driven 25 miles with it and stopped at many red lights along the way with no issue and NO WARNING lights. I could have gotten into a major accident if it had happened anywhere else in my route. Fortunately, I was about a mile from my house and the hybrid motor helped slow the car down. I was unable to stop at any stop sign in my development and here again was very fortunate that there were no cars along the way. Once I got home, I got it towed to Toyota and was told it is an internal failure of the actuator. I contacted Toyota America and was just told that there was a campaign to repair this but that I had passed the date. My car has only been serviced at the same Toyota in my city since I got it. I religiously brought it every 5000 miles. I am shocked that they never mentioned this campaign to me and that they didn't initiate a repair during the campaign. This is a major issue that needs to be addressed and Toyota needs to be held accountable.

About three weeks ago, my daughter told me that several lights were on on her display. I checked and among them were the traction control and 2 other related to the brake system. I looked up possible causes on the Internet and it seemed the brake booster/master cylinder could be a culprit, but then I checked the fluid reservoir and the fluid was low, so I topped it off, drove the car, pumped the brakes a few times and all the lights went off. About a week later the lights were back on. I checked all the lines and saw not visible signs of leaks and decided to take it to a mechanic. I took it to a local mechanic and I was told that the brake master cylinder with brake booster failed and had to be replaced. Afterward the brakes were repaired I went to 2 local Toyota dealerships to check the price of the parts. The first dealership provided the prices without any discussion. At the second dealership, the employee who waited on me, after I provided her the VIN and told her that I need the price of the brake booster/master cylinder,m told me that there was a service notice on the booster/master cylinder because of a high rate of failure and that I would have to check with the service department before she could sell me the part. This is concerning, if Toyota knew/knows that the part has a high rate of failure, why wasn't a recall notice issued?

Brake master cylinder and brake booster accumulator assemblies brake parts from this vehicle failed on another vehicle.

My actuator is failing. This is a known issue for Priuses and a danger to those on the road. Toyota issued a voluntary service program on these parts to avoid a recall and now many are on the road with actautors that should have been replaced.

After starting the car on 7/30/24, the Brake System Warning Light, ABS,Slip Indicator, and Master Warning Light all came on indicating an issue with the brake system. We were able to get it to the local dealership and when they ran diagnostics on it, it returned a code C1391, which confirmed the issue. This was addressed in 2020 by Toyota, but only for cars 10 years or 150,000 miles old. Our car is a 2022 with 105,000 miles on it, but we are outside of the year limit (car was 8 years old when the Customer Service Program was released).

ABS brake system doesn't work with three warning lights on and warning beeping sound. I'v learned that Brake actuator failed. Current mileage is only 67300.

ABS Break Lights turned ON and it need replacement. Toyota have faulty ABS this is my 3rd Prius that have the same Issue.

I started noticing a strange noise when I applied the brakes. It was an electronic type of almost grinding sound. When I looked into it, it was determined that the brake actuator was failing despite no warning lights coming on. This started around the beginning of March. Finally in the beginning of July the noise stopped and a lot of dashboard lights came on including ABS, BRAKE, and others. This is when the brake actuator actually failed, and the battery no longer was charged when the brakes were applied. This is extremely concerning that a major brake component can fail like this and affect the safety of the vehicle. I am attaching a photo of the dash that shows the lights that came on when this failure occurred.

The brake booster noise, brake problem, brake booster pump internal mail function

2012 Toyota Prius brake actuator failure . While driving my Toyota Prius the braking system failed, this was on a large road and so posed a major danger to not only me, but the passengers in the vehicle and the vehicles around us. Thankfully nobody was hurt. After having the vehicle inspected by a Toyota dealership the problem was found to be the “Actuator/accumulator” and after speaking with the dealership it has come to be my understanding that this is a common and unavoidable problem with Toyota Prius models. There were no lights or warnings on in the vehicle until after the brakes gave out. I cannot understand why this has not been recalled when it is a manufacturing issue on Toyotas end that poses a significant danger on the roads, and am wondering what the reimbursement policy for this is as it came out to be quite expensive.

In 2019, I took my Prius in for service. I reported that when I suddenly brake, the pedal feels spongy as if the brakes will not stop vehicle and lights on dash lit up. Toyota did diagnostic, no action taken by service department at Toyota dealership. I have service history documentation. On June 29, 2024 we had routine maintenance and the service department of the Toyota dealership recommended brake fluid serviced. On July 1, 2024, I was driving my child home from his summer camp and when I tried to stop the brake did not work. I started pumping the brakes several times until the car slowed and came to a stop. The lights on the dash lit up again. The brake failure put my son and I in danger. We had the car towed to the service department of the Toyota dealership. The service department sent the following information after their diagnostic. "The warning lights re-appeared after we drove it a few times. Now regarding the brake fluid service we performed, it is not related to those warning lights. Your accumulator is internally failing. The accumulator is a computer that distributes and controls the amount of pressure going into the brake system, and the computer was not untouched. Unfortunately it was bad timing and the computer started to internally fail. These vehicle's are known to have bad brake actuators, and Toyota created a type of recall for it to get replaced under no charge. Unfortunately they only cover up to 10 years and your warranty expired last year." My husband and I did not receive information regarding this recall. We did an online search to find out more about this recall and found several pages and posts of people describing the same situation.

The Brake Master Cylinder and Brake Booster pump failed to maintain pressure. I don't have the replaced parts, my mechanic recycled them before I realised I was going to submit this. When the part completely failed, I had the ABS, traction control lights on. I couldn't trust that the car wouldn't have a problem stopped, and the brake pedal also became squishy in responsiveness. My own safety, my kids safety, and the safety of others was at risk and I immediately stopped driving it to get the repair done. The problem was confirmed by a Toyota dealership and this was a recall but since my car is older the recall had expired. I was unaware of this recall until the issue began. It was also confirmed by my personal mechanic to be the failure. The Dashboard lit up the ABS, TCS, Brake, (!) light, VSC, and the sound of the pump changed. Before all the lights came up I had noticed a air leaking sound coming from near the brake pedal at times.

Completely lost vacuum brake assist without any prior warning, while driving on the interstate. Got warning lights on the dash for brake and ABS, when it happened. Fortunately there was little traffic, but if there had been even moderate traffic, it could have caused a crash. Checked the codes and found a C1391 leak in the accumulator. Dealer has quoted me $3200 to repair.

while driving i lost the power braking on my vehicle and the abs, traction and another exclamtion point symbol came on. my brakes had to be pushed really hard all the way down to the floor board increasing my braking distance.

Hi NHTSA, I have a 2012 Toyota Prius and all the Brake-related lights came on the dash. ABS and TC stopped working and the Brake Pedal lost sensitivity. I was about to crash the car and immediately took my car to the Toyota Dealership. They said that there was a Recall unfortunately the program has expired on my vehicle. I asked a couple of Toyota Prius owner friends and half of them had the same issue and they have been fixed under a program. But they said my 95k miles Prius is barely out of the program. My concern is that they charged the diagnosis cost released my vehicle and said that it was not safe to drive! I don't have the budget to cover the Manufacturer's low-quality BRAKE Booster production and I have to drive my car every day! I don't want to risk anyone but I have no choice. I hope you can help!

The contact owns a 2012 Toyota Prius. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle did not stop as intended. In addition, several unknown warning lights were illuminated. The contact used the parking brake to stop the vehicle. The vehicle was towed to the dealer where it was diagnosed with a failed brake master cylinder, accumulator, and brake booster. The contact was informed that the brake master cylinder, accumulator, and brake booster needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure and a case was filed. The contact was informed of an unknown recall for the failure; however, the contact was informed that the recall had expired. The failure mileage was approximately 136,000.

Complete Brake failure, confirmed brake accumulator / actuator failure resulting in near miss crash, tow home not drivable, onle e brake works, appears pump burned up not running any longer.

Traction control, brake, and abs warning lights all came on at once while driving on freeway. Braking became harder. Car has fewer than 60,000 miles. I took it to the mechanic. He says I need a new booster pump.

Decreased braking performance. Sudden loss of ABS and Traction Control capabilities. (ABS light and Traction Control lights are now permanently illuminated on the dash). During the drive home, the brake response changed dramatically. More force is now required to operate the brakes. This failure occurred during a merge into traffic while on a merge ramp, going about 35 mph. It took what felt like a few seconds for both the vehicle and myself to adjust to the new braking requirements. During this time, it felt like a brief loss of braking ability. I continued to depress the brake pedal, and finally noticed a slowing of the vehicle. The pedal clearly requires much more effort and depress distance to begin slowing down the car. This decreased braking performance appears to be sustained until repairs are made to the vehicle.

ABS, Stability Control and Brake warning lamps on dashboard. Faulty Brake Booster/Pump/Accumulator doesn't allow for safe stopping. Looking on the world wide web, it appears to be a common issue with this generation Prius (and it is COSTLY to repair).

Was 8 days out of warranty so Toyota would not honor offer to replace the brake booster/actuator. Paid personally to have it done with genuine Toyota parts. 16 months later same parts need replacing. Toyota refuses to help.

Brake booster has gone out. This is a known, dangerous issue that Toyota knows will occur, It is a dangerous and expensive risk to those driving these ticking time bombs, and those potentially in the path of these vehicles. This is a pure safety risk item. No one asking for these brake actions are gaining anything materially other than the use of their cars safely. To make matters worse, Toyota doesn’t even make these in volumes that don’t generate volume pricing efficiency, meaning replacement runs upward of $4k to $5k at their dealerships to replace. Criminal…. Please help.

Brake system warning lights illuminated. The brake pedal pressure required to stop the vehicle has increased. In effect: no power brakes, no traction control, and no antilock available. Intermittent engagement of an electric motor can be heard about every 8 seconds for a period of about 3 seconds during operation of the vehicle at all times.

Sudden lights appear on dashboard. Brake system sudden fail becomes very hard to press the pedal or apply brakes My car has 136000 miles only Asked mechanic and mentioned the brake booster pump.

I was driving when I felt my brake pedal start to become soft and mushy. I was able to brake, but I had to pump the brakes to get full brakes to stop. I also noticed warnings began to appear on my dashboard. The warnings that were shown are the brake light, traction assistant light, and ABS light. I took it to Gates Toyota in South Bend, IN and paid for a brake inspection. They told me that my brakes themselves were OK (pads, rotors, calipers), but they were getting a C1391 error. I was told that the brake accumulator has an internal leak. I was told that I needed to replace the brake master cylinder and brake booster pump assembly. I bought the car used from the dealership about a year and a half ago. After doing research, I found that this same issue has been a common recall problem on a number of Toyota vehicles starting as far back as 2008. I also found a few class action lawsuits concerning Toyota vehicles with the exact same issue. My vehicle doesn't show any current recalls, but I'm having the same problem as other Prius V vehicles are having. I was quoted $3300 to fix this problem. I shouldn't have to be responsible for paying for a defect that has been recalled on a very large number of vehicles, and also has been the result of class action lawsuits.

Brake pressure actuator defect leading to major brake failure. No warning until it's too late.

Warning lights, and while driving the ABS, brake, and traction control lights came on, and I NOTICED a strange sound when applying the brakes. The brakes seem somewhat soft when applied. This is a 2012 Prius with 123,000 miles.

Code C1391 shows in which the accumulator and the brake booster assembly need to be changed. This is a known defect and was covered through an ‘extended warranty’ due to a lawsuit. Since it results in less than optimal braking, and can result in crashes since function disappears suddenly, it should have warranted a recall. This issue is also known to happen in multiple Toyota hybrid vehicles.

Brake failure resulting in code C1391. Petition for Defect Investigation dated 09/09/23 summitted to NHTSA Office of Defects Investigation via Certified Mail. Received by Office of Defects Investigation on 10/10/23.

I bought my first used car, 2012 Toyota Prius, from Fowler Toyota back at the end of October 2023, but I was not able to pick it up until September 21, 2023 due to extra time for re-conditioning. I did not haggle about the price nor complained about the 3 week delay. In the last 3 weeks of owning my car, the TPMS sensor light and check engine light infrequently turned on. February 28, 2024 all the fault sensor lights on my instrument panel are on, along with the loss of proper braking function. I was not worried about the other sensor faults, but brake malfunction is a matter of life and death to myself and others on the road. I have had the car for a little over 4 months and less than 10k miles. I brought the car in to diagnose all the error codes. The dealer said it will cost over $2600 to fix the brake malfunction. I chose this particular car because carfax had well documented service records and Fowler Toyota advertised that every used vehicle for sale has surpassed rigorous inspection. I voiced my complaint to the used car director and he offered numerous default excuses for unforeseen problems inherent in buying a used car. I said I did my due diligence by selectively purchasing a used Toyota Prius, from a reputable Toyota dealership that uses a Toyota certified service center to inspect and recondition vehicles for sale. All the cliche nightmare stories of buying a used car from the side of the road car lots came true in my experience at Fowler Toyota. The worst used car story happened to me, despite performing my due diligence: to buy a used Toyota from a Toyota dealership that uses a Toyota certified service center for re-conditioning vehicles. I even paid more to finance my Prius through Toyota Financial services, which did not offer extended warranty. For God sake, I was buying a Toyota with 121k miles. I only bought a prius because I work too hard to throw away all my hard earned money on gasoline. The only recourse the dealership offered

The contact owns a 2012 Toyota Prius. The contact stated that while driving at various speeds, the ABS warning light illuminated and the vehicle skidded while depressing the brake pedal. The contact stated that the hazard lights independently activated and caused the battery to drain, and the vehicle would stall. The vehicle was taken to a dealer where the contact was informed that there was a Customer Satisfaction Program for the failure, but the Customer Satisfaction Program had expired. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was approximately 120,000.

The contact owns a 2012 Toyota Prius. The contact stated that on several occasions while driving at various speeds, the brake pedal was depressed, and the vehicle started shaking and failed to slow down as intended. The brake, ABS, and traction control warning lights were illuminated. On another occasion, while driving 70 MPH, the brake pedal was depressed, and the vehicle began shaking and failed to slow down as intended. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 88,000.

Brake actuator making noise every 10 seconds and oil is having to be filled in everyday.

Brake failure

Coming to a yellow light, I braked and the vehicle made a strange sound with loss of braking, so I sped up instead, having to go through a red light. Shortly after, that afternoon, when I again started the vehicle, the safety lights lit up in the dashboard and my vehicle kept making a strange cycling noise. As it turns out, it was the whole brake actuator assembly. Under great financial hardship, I had the vehicle repaired ($4300+). I applied to Toyota Corporate for help but they denied it, saying I was outside the extended warranty. I’ve since learned this brake problem was a known issue, and Toyota settled a class action settlement. My vehicle has only 90,000 miles on it, and it is has been used primarily as an in-town vehicle, our only car. I’m asking for a recall and reimbursement on repair for affected vehicles. Toyota has been allowed to get away with responsibility for a known issue by putting it into a extended warranty program, now expired. Meanwhile, this dangerous, known defect continues to happen to unsuspecting drivers. I was lucky with my incident, as no cars came out when the light changed, but it could have been a different outcome.

Hard to stop, ABS AND BRAKE AND TRACTION CONTROLL RELATED WARNING LIGHTS ON. ERROR CODE C1391

brake warning lights (ABS, traction, and (!)) went on while driving on the highway with my 8-year old. Needed brake booster replaced. Replaced at dealership for over $4500. Was a year and a half outside of a customer support program that covered cost for our vehicle through Jan 2022. Called Toyota to see if they could do anything and to report safety issue. They did not give me any funds towards repair. I feel that this is a significant and scary safety issue, and an unfair financial burden for Toyota customers to bear.

See attached document for complaint

On October 24, 2023, while driving my car, several lights went on all at once, including the ABS, and brake lights. I immediately drove it to the Toyota Dealership on 2213 Old Jacksboro Hwy, WF TX 76301. The car was also making a noise constantly, that I had taken into Toyota service center previously which was also causing an issue with my battery dying. (It went through 4 batteries in the last 2 years). Toyota diagnosed it as a problem with brake booster and assembly and brake booster pump. calling for both of them to be replaced at a cost of $3,888. Toyota did not inform us of any recall regarding brakes, I did email Toyota directly, called and tried to work with the dealership, all to no avail. They are being sued due to numerous complaints and refused to assist me.

I have had a 2012 Prius since 2016. The entire time I've had it, it occasionally "hydroplanes" but without any water. It happens in wet or dry (but mostly dry) conditions. Usually at slower speeds so, though it makes me very uncomfortable, it doesn't happen with any regularity. I've taken it multiple times to my mechanic who always says "Prius' just do that", which is not reassuring. I know there was a recall and I was told my car did not fall under that umbrella. On Wednesday of this week, 10/25/23, I finally had an accident because of this. The brake lockup had been happening more frequently in the past week and in this instance I saw the car in front of me suddenly slow down - I had about 2/3 of a cars distance between me and the car ahead. I hit the brakes and nothing happened. I was pushing down on them long enough to think, "Ok, this is it. They aren't responding at all and I'm going to hit this car in front of me." I did and it crushed the passenger side of the car. Luckily I wasn't hurt. There were no warnings from the car at all that this was going to happen, as there never are. I took it in for possible repair today (the mechanic is not sure but thinks it may be a total loss). This car did everything they describe in the recall cases and I want to know if there's anyway to be repaid from the company for this as there was nothing I could do to stop this accident? Why wasn't my car included in the recall?

Error code C1391 confirmed by two separate facilities, described as "abnormal leak in accumulator" and "accumulator pressure." Took to an independent shop first, then to Haley Certified Toyota Dealership. At dealership, parts needed were quoted to include tsb-0024-19. Three lights went on simultaneously (ABS, Traction, Brake).

The brakes fail and the ABS module stops working correctly and when I go at a speed of 60 MPH the brakes lock until the speed drops and they work again. The problem is with the ABS module and I went to the dealer and the repair value is $3450 dollars.

The abs pump kept running after the car stopped running... Malfunction and had to be replaced!

My car breaks with out i almost hit the car in front of me, i could killed someone . This is very dangerous i took my car to a Toyota dealership they said the Extended warranty expired. They said upon inspection found code C1252,C1253,C1256 brake pump and actuator fault. Upon inspection found abs actuator accumualtor leak. Causing brake pedal to be hard and brake system malfunction. Toyota should had made a recall of this and not just a extended warranty that expires. I have 206,000 miles original owner they should me a lawsuit for this its very dangerous. I end paying $3000 of my own money to fix it, i should get reimburse for my money.

The contact owns a 2012 Toyota Prius V. The contact stated that while driving at an undisclosed speed, he depressed the brake pedal to stop the vehicle; however, he had to apply extra pressure to the brake pedal and the brake pedal extended to the floorboard to bring the vehicle to a stop. No warning light was illuminated. The vehicle was taken to an independent mechanic where the vehicle was diagnosed, and the mechanic retrieved DTC Code: 1391. The contact was informed that the brake booster assembly needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 153,000.

ABS, Break and traction control lights from dashboard lit on and breaks were difficult to operate during driving, able to drive back home safely. Find out that ABS (brake booster and brake booster pump assemblies which are consider safety items), are defective and can cause accidents. When calling Toyota Customer Experience Center, they decline to honor customer support program ZJB due to my car is exceeding by 5k miles the additional limited warranty. Now I will have to pay out of pocket on known safety defective part, this should be a recall and not wait to an accident to happen.

My Prius V experienced brake failure today, with three warning lights appearing at once and the brake pedal not engaging the brakes unless it was pressed almost to the floor. This made it feel extremely scary and unsafe to drive. I was very upset to see that this is a recurring problem with Prius cars in this age range. Although I only have less than 120,000 miles on it, Toyota is not offering an extended warranty for the failing parts (brake master cylinder and actuator and booster) past 10 years or 150,000 miles. This is total BS if they already know that there is a problem with these parts.

Diagnostic code C1391 abs system. Brake accumulator pressure leak. This a known issue and common problem. $3000 dealer only repair. There was a customer service program and extended warranty. This is a major safety issue and Toyota has stopped offering any repair support and expects customers to cover the full repair price themselves.

My teenage daughter was driving and almost had an accident because the brakes failed. No warning lights came on until the brakes failed. I am learning now that it is a brake booster pump that Toyota knows about it as they had issued an extended warranty on the same thing that expired last year. Toyota confirmed that my Pruis was included in the customer service program but it has now expired.

In July of 2021 the Toyota dealership replaced the inverter on my 2012 Prius V. At the time, it also was exhibiting signs of the brake booster and pump failure as outlined in CSP 20TE07 (see https://www.toyoheadquarters.com/threads/2012-2014-toyota-prius-v-2015-toyota-prius-v-coverage-for-brake-booster-and-brake-booster-pump-assemblies-csp-20te07.2116/). It was inside the extended warranty period, but they would not fix it at the time, because it was not throwing diagnostic codes. Subsequently, the braking system malfunctioned, nearly causing a high-speed accident on the freeway. With diagnostic lights now showing, and code C1391 stored in the OBD system, I took the car back to the dealer, but now they said it was past the 10 year limit and still would do nothing about it. This is not acceptable! They knew the brake system was failing and a safety hazard, but would not address it, just because it hadn't actually failed yet. Toyota needs to further extend the warranty and take care of this brake failure past 10 years and 150,000 miles. Just because I took good care of my car and the brakes didn't fail as early as other owners, I should not have been subjected to the risk of brake failure or the high cost of repairing the brake system when Toyota took care of this problem for so many other hybrid owners. Please help.

The contact's wife owns a 2012 Toyota Prius V. The contact stated that while his wife was driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. Additionally, the brakes intermittently failed to stop the vehicle immediately. Several unknown warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed, and the mechanic retrieved DTC code: C1391. The contact was informed that the ABS actuator and pump assembly needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 160,000.

The contact owns a 2012 Toyota Prius V. The contact stated that while her husband was driving at an undisclosed speed into the dealer's parking lot, the brakes failed to stop the vehicle immediately. The brakes, ABS, and several other unknown warning lights were illuminated. The contact's husband then shifted the transmission into neutral (N) and coasted until the vehicle came to a complete stop. The dealer diagnosed the vehicle with DTC codes: C1252, C1253, and C1256, and determined that the brake booster and ABS pump needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 166,000.

While coming to a stop there was a loss of braking power and feel. Due to the unexpected change in braking characteristics this nearly caused me to collide with the vehicle in front of me. Noticed the traction control, ABS and Brake light on dash illuminated. My local Toyota dealership has diagnosed the repair as a repair involving the brake booster master cylinder and pump assembly.

On June 11, 2023, my Toyota Prius brakes failed while I was driving! The vehicle was towed to the Toyota dealership on June 12, 2023 and determined the car needed brake booster assembly with master cylinder, based on codes presented at diagnostic. Quoted repair cost of $3,544.99+tax. I am second owner of this vehicle, which was purchased December 2020 from the same dealership. I was never notified about this pending issue from Toyota North America or from the dealer. I contacted Toyota North America on June 13, 2023 and was denied repair because Consumer Support Program 20TE07 expired May 2022. This Consumer Program should have been a recall. Brake failure is a major safety issue.

Last week my 2012 Toyota Prius-C had four lights come on (ABS, Brake, Swerve, and one other). I took it to my local mechanic who informed me that it was my master cylinder brake that needed to be replaced and would cost me $3,300. This issue started roughly 10-12 months ago, when I heard my brakes making a noise that sounded very unusual, almost like a hydraulic issue. I learned that there was a Toyota initiated CSP. Toyota realized there was an issue with the 2012-2014 brake system that affected over 100,000 vehicles. Those affected by CSP's are supposedly notified by mail. Needless to say, I never received such notice. This aforementioned CSP expired in November 2022 that my car would have qualified for, had the problem been diagnosed prior. However, when I brought my car in on August 8th, 2022 for my hybrid battery, a diagnostic was done on my brake system with no indication that my brake system was in trouble. I really can't fault the mechanics at the local Toyota, I took it to a second brake specialist a few months after and they too could not identify the problem. The problem was so bad, Toyota discontinued the brake system. Toyota said it would need to be broken 100% with an error message to qualify prior to the November 2022 deadline. After being facetious and saying I should have broken the part myself to qualify, she said that is what I would have needed to qualify.

As I was driving, all of the brake lights turned on on the dashboard. The moment the lights turned on the brake power felt low on heavier pedal depression. I took the car in to the dealership for assessment and said they found internal failure of both brake actuator and booster and recommended replacement of both actuator pump and booster. I have had both the parts replaced and after now the second replacement of the master cylinder, there is still an error code for the pressure cylinder and all the brake lights are on.

Brakes Failed with code c1391 this is a known issue with toyota .

The contact owns a 2012 Toyota Prius V. The contact stated while driving approximately 35 MPH and at various other speeds, the contact heard an abnormal whirring sound like an electric motor engaging coming from the engine compartment. The contact stated that several unknown warning lights were illuminated with the brake pedal going to the floorboard while being depressed. The contact stated that the failure also occurred while starting the vehicle. The contact stated that the failure persisted. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the brake booster and the brake booster vacuum pump needed to be replaced. The vehicle had not been repaired. The manufacturer had been informed of the failure. The contact called the manufacturer and was informed that the failure was related to Customer Support Program: 20TE07 - Brake Booster and Brake Booster Pump Assemblies (Service Brakes); however, the vehicle was not covered under warranty. The failure mileage was approximately 112,000.

Failure of hydraulic power brake booster and brake booster pump caused loss of brake fluid resulting in brakes not working properly. Cycling noise from brake booster. Vehicle regenerative brake system also failed to operate. Independent dealer repaired vehicle at my expense after Toyota denied warranty repair

Brake light, Trac light, and ABS light came on after brake pedal became squeshy. Took to nearby repair shop and advised that car was not safe to drive. Scanned for codes. Code C1391 (Abnormal leak of ACC pressure) indicated. Recommended that brake booster assembly with the master cylinder be replaced, and replace the Brake Booster Assembly. Total cost of repair was $4,188.02.

The contact owns a 2012 Toyota Prius. The contact stated while driving at various speeds, there was an abnormal humming and buzzing sound detected. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed that the ABS brake and brake booster pump needed to be replaced. The manufacturer was contacted and referred to the NHTSA Hotline for assistance. The failure mileage was approximately 119,000. The VIN was not available.

Without prior warning brake pedal goes to floor before minimally engaging braking system at a very reduced rate causing me to swerve and narrowly avoid collisions on interstate. There is no pressure feeling in the brake pedal although brake fluid level is normal and inspection of brake pads indicated significant pad available. No DTC light is coming on and OBD scan tool indicates no brake error. Brakes are unable to stop car to avoid collision, so car is dangerous and undrivable.

The contact's mother owns a 2012 Toyota Prius. The contact stated while driving at various speeds and depressing the brake pedal, the brakes made an abnormal sound. There were no warning lights illuminated. Additionally, the contact stated while the vehicle was parked, the ABS, the brakes, the electronic parking brake, and traction control system warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed that the brake booster assembly, the brake booster pump, and the brake master cylinder needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that they could not assist as an unknown Customer Satisfaction Program had expired. The failure mileage was approximately 125,000.

The Brake Actuator and Brake Accumulator were covered under a customer support issue until 5/18/22 On our car they are charging me $2600 to fix this issue. The car was at Toyota years earlier for a recall but Toyota never told us about this issue. That is not fair in my opinion. And now we are being charged $2600 to fix this issue Best [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

The Brake Actuator and Accumulator on the car have failed Toyota had a customer support issue on these parts and fixed them for free BUT it expired 5/18/22 No Toyota dealer told me about this issue and I received no warnings Now the 2012 Prius with 78,000 miles has this issue and Toyota wants $2600 to fix it

The contact owns a 2012 Toyota Prius. The contact stated while driving 50 MPH and depressing the brake pedal, the vehicle failed to respond. The vehicle responded after depressing the brake pedal several times, and came into a complete stop. The ABS and anti-skid warning light were illuminated, and the message "Brake" was displayed. The vehicle was taken to an unknown location, where it was diagnosed that the rear passenger brake sensor needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken to an independent mechanic, where it was diagnosed that the pump actuator needed to be replaced. The vehicle was not repaired. The mechanic referred the contact to the manufacturer. There was no further information provided. The manufacturer was contacted and informed the contact that the vehicle could not be repaired under an unknown Technical Service Bulletin Number as it had exceeded the mileage and year required. The failure mileage was 165,000.

The brake had an issue while driving. It was hard to stop the car. It is probably due to the brake booster. I had this issue and I took my car to the dealership and they could not find the problem. I had the same issue again while driving. Luckily, when both problems happened, I drove slowly on the local roads. Toyota had recalled those specific models but the length of the warranty is not long enough to solve the problem. For instance, they gave a second warranty, either 10 years or 150K miles, which hits first. I got this brake problem 6 months later after the warranty expired. But my mileage is low ~118K. For drivers' safety, they should extend the length of the warranty. The two parts are expensive (~4-5K in total) and apparently, that's the problem with the design of the auto parts. Customers should not pay for them and risk their own life.

Driving on Interstate and suddenly traction control light, brake Light, and ABS light came on. After this the brakes were not as affective at stopping the vehicle and felt sluggish. Found a lot of reports online about similar issue and even some when the vehicle brakes failed. My brakes allowed me to get home without incident.

The contact owns a 2012 Toyota Prius. The contact stated that while driving at an undisclosed speed, the ABS warning light illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the ABS module software needed to be updated. The manufacturer was not made aware of the failure. The failure mileage was approximately 53,000.

Suspected Brake Booster failure. We have been experiencing our brake booster running several times a minute and something felt off. In December, we took it to the dealership who said they "were unable to replicate the issue". We found that odd since we experience the issue every few minutes, but we believed them when they said that there was nothing wrong with our brakes. Yesterday, about one month later, we were driving on a busy street when our brakes appeared to fail. We couldn't make the car stop, three dashboard lights came on (the ABS and two others) and eventually we realized the brakes had to be pressed really hard to get the car to stop. We avoided an accident, pulled into a parking lot, turned off the car, checked the brake fluid (the brake fluid was fine), restarted the car and the lights still remained and the brakes continued to not compress easily. We called our Toyota dealer who said that there is no recall on our Brake Booster and that this is not a known issue, and yet there are hundreds of readily available accounts of 2012 prius owners who experience the same fail.

I was driving at night and several brake related dashboard lights suddenly lit up and I wasn’t able to use my brakes. I managed to coast safely to a stop, called a tow truck, and got my car home. Mechanic found a c1391 code and told me to go to Toyota. Toyota says the accumulator has a leak and it causes the brake up issue, but the service plan free program to fix it expired. They want $5000 to fix it. I want Toyota to extend the plan because I didn’t drive as much during the pandemic and I would have had the issue earlier had I been driving at normal amounts,

All the lights on my dash lit up. I took it immediately to Toyota of Dallas . I tried numerous times connecting with Dimatrius service manager. No call back. An inspection was done on the vehicle. He stated it would be a $5000 job and I was out of warranty. Their is too many people having this issue if you search many 2012-2014 people are having this issue in a addition to to a google search search for a letter at Capistrano Toyota.

The contact owns a 2012 Toyota Prius V. The contact stated while driving 30 MPH, the vehicle stalled inadvertently. Several unknown warning lights were illuminated. Additionally, the brake pedal was depressed but failed to respond. The contact veered to the side of the road and intentionally struck the curb to stop the vehicle. The vehicle failed to restart. The contact stated that the vehicle later restarted and was driven to the dealer. The dealer diagnosed that the ABS actuator had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that they could not assist because an unknown Toyota Courtesy Program issued for the failure had expired. The failure mileage was approximately 160,000.

The contact owns a 2012 Toyota Prius. The contact stated while driving approximately 40 MPH, the brakes became inoperable. The ABS and traction control warning lights were illuminated. The vehicle was taken to an unknown local dealer where it was diagnosed that the brake booster and brake pump assembly needed to be replaced. The vehicle was not repaired. The manufacturer was contacted but no additional assistance was provided. The failure mileage was approximately 335,000.

Toyota Program ZJB, internal malfunctions of the brake booster assemblies. A known failure of the brake booster than Toyota did extend the warranty on for 10 years BUT would not honor the warranty unless specific diagnostic codes appeared on the vehicle. My issue is that all of the symptoms of the failure occurred on my vehicle (pump constantly running, varying hydraulic pressure resulting in pulsing brake stops, soft brake pedal) but the warranty would not be honored because the diagnostic did not manifest itself. Had technicians tell me that it definitely was this booster failure, but Toyota would not pay for it unless the diagnostic came up. I am now left with a vehicle that has a failed brake system and no monetary support from Toyota. Quoted $2500 to $3000 to repair. Not safe to drive in my opinion with a known failure that I am having trouble getting funding to repair. Contacted Toyota customer support and they reiterated that they would not pay for the repair without the diagnostic occurring and now their extended warranty expired August 31, 2021. Inspection available upon request Safety issue as braking is inconsistent and not predictable Problem was identified by Toyota dealer service department No diagnostic alarms - which is the only symptom not present

The Brake Booster or Actuator is failing, without any indication or warning lights on the dash alarming us to the problem. The car has been making weird sounds, but after being inspected, this, according to the Authorized Toyota Dealer, on December 22, 2022, is a life-threatening and very dangerous malfunction to myself and others around me when driving. This is the first hybrid car we have owned, and we thought the noises we had been hearing for a couple years was normal, because there were no warning lights coming on to tell us otherwise. The dealer did not want us to drive the car any further due to the danger of the problem. We asked the dealer to repair the problem without charge, but that request was denied by the Toyota Brand Engagement Center (Case 221222000587). The dealer is currently repairing the malfunction at a cost of approximately $2650 plus tax). We are highly disappointed with Toyota not repairing this known problem under a dealer recall.

The contact owns a 2012 Toyota Prius. The contact stated that while driving at an undisclosed speed, the brake warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed that the brake master cylinder and brake booster needed to be replaced; however, the dealer informed the contact that the repair was not covered under warranty. The vehicle was not repaired. The contact stated that the failure recurred while driving and the vehicle hesitated while the brake pedal was depressed. The contact slammed on the brake pedal and the vehicle came to a complete stop. The vehicle was towed to the residence. The manufacturer was not made aware of the failure. The failure mileage was 185,519.

The brakes on my 2012 Toyota Prius failed suddenly with little warning after starting the car, and when I began driving off in a busy Walmart parking. I was startled when I felt that the brakes did not seem to work, nearly causing me to collide with the car in front of me. I had to quickly depress the brake pedal to bring the car to a stop. The normal braking power was greatly reduced when I depressed the brake pedal, and I had to use more force to bring the vehicle to a stop. Only when I looked down did I see that some of the dashboard lights relating to the brake system stayed lit and not turn off like they normally do. These lights appear to be brake warning, ABS warning, and anti-skidding lights. The brake problem has been inspected and confirmed by both an independent service center as well as the Toyota dealer. The failed brake component was diagnosed as an abnormal leak in the accumulator, and the brake booster with master cylinder assembly requiring replacement, with the code #c1391. After having done some research, it appears that this exact brake problem seems to be afflicting many such generation Toyota Prius vehicles, and the manufacturer Toyota was aware of this problem existing in such vehicles.

The contact owns a 2012 Toyota Prius V. The contact stated while driving approximately 40 MPH, the brake pedal was depressed with excessive force; however, the brakes failed to respond as needed. The contact stated that five unknown warning lights were illuminated. The contact then stated that the failure was reoccurring while driving at various speeds. The vehicle was taken to the dealer where an outside technician diagnosed the failure as five unknown fault codes related to the brakes. The contact stated that the brake booster and actuator needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that the VIN was not included in a recall. The failure mileage was approximately 211,000.

The car has been diagnosed by a Toyota dealership as having an internal leak in the Brake Booster and Accumulator, both are part of the brake system. Repair estimate of $3800 00 dlls. Currently i have 3 check lights on, Brake, ABS and Traction control. All controlled by the same module

My prius got ABS, Brake, Traction light on when I was on traffic in the highway. Car lost brake power. Regenerative brake does not. It takes longer to stop the car. TOYOTA NEEDS TO FIX THIS. THE ABS MODULE IS GONNA FAIL AT SOME POINT. Dealership asks $5000 to fix. C1391

At 106K miles and after 10 years and 8 months in service (new vehicle bought in March 2012) Brake booster internal leak, code c1391. Brake light, ABS light and VSC light stay on. Can not drive it as the brake booster internal leak is making the brakes spongy and slow in response. Talked to Toyota and they said it is out of warranty and the deal is estimating $2000 plus for the repair. Miles on my cars 106K are way less than 150,000 allowed by Program Service bulletin ZJB (attached) but Toyota is denying repair coverage as the vehicle life is eight months more than 10 year limit since first use. Did not drive it much within the last two years because of working from home due to covid 19. Had it been driven more frequently the brake system failure would have happened way earlier as the internal leak (possible fatigue failure causing leak) should be more related to driven miles and brake system cycling of pressurizing and depressurizing than just being parked on the drive way. Would request if NHTSA could extend the duration of ZJB bulletin considering the fact that many drivers did not drive that much in the last two years due to working from home and this internal leakage failure can be related to fatigue loading of the hydraulic components and the number of fatigue cycle are directly proportional to the driven miles and not the life of the vehicle. Thanks

The brake system (accumulator/booster) has failed and reduced stopping ability. Error code is C1391

The contact owns a 2012 Toyota Prius. The contact stated that while driving approximately 50 MPH, the ABS, brakes, and traction control warning lights illuminated. The brakes became inoperable, but the driver was able to regain control of the vehicle and pulled over. The vehicle was taken to the local dealer where it was diagnosed there was a hydro pump motor fault and hydro motor pump relay fault with codes C1252 and C1253 and the hydro boost brake pump kit and brake assembly needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and referred him to the NHTSA hotline. The approximate failure mileage was 97,000.

I have a 2012 Toyota Prius that the Toyota dealership has confirmed that I have a failed ABS actuator and is displaying the correct repair codes for the service bulletin but they refusing to cover any of the costs to replace the ABS actuator and boost pump. Since the failure of the ABS actuator I have had 2 close calls where I needed to stop fast and my tires locked up, I lost control of the car and spun out but luckily I did not hit anything. The brake, ABS, and 2 other warning lights have come on and off intermittently on the dashboard of my 2012 Toyota Prius. I summited a good faith request to the repair my Toyota Prius ABS actuator at Toyota of Anaheim on 10/28/2022 and due to it being 20 days past the 10 year limit and slightly over the 150,000 mile limit at 158,000 they say that I'm 100% responsible for the repair costs of $3,231.78. This proven design flaw is not my fault, it did not occur under normal wear and tear and the brake ABS actuator and boost pump should last much longer than it did. Now I'm faced with paying a huge bill for the repair or pick up my Prius from the dealership and drive it home with a defective ABS actuator. This is another example that Toyota is placing profit ahead of safety.

During a hard braking, felt brake pedal softer and less responsive braking. Now ABS Icon, Brake Icon, and Traction Icon is on. Confirmed Code P1391 in ABS system.

The contact owns a 2012 Toyota Prius V. The contact stated while driving at an undisclosed speed and making a stop, there was a rattling sound coming from the brakes while depressing the brake pedal. The vehicle was taken to the dealer for diagnostic testing. The contact was informed that the brake booster needed to be replaced. The vehicle was not repaired because there were no fault codes retrieved. The manufacturer was contacted and stated that the vehicle was out of warranty. The failure mileage was 100,000.

The brake booster pump has started to run every 30 seconds while the car is operating. When pressing on the brakes, there is an unusual sound and has begun to feel different. There are no warning lights yet, but after consulting with the local Toyota dealership they informed me of the ZJB Customer Assistance Program which addresses this issue. Unfortunately the offer to repair has expired and the dealership has declined coverage. I contacted Corporate Toyota and they are declining to cover the repair. I don't have the $3500 to replace this brake booster pump at this time. This is a safety concern and I don't understand how this is not a RECALL due to the potential safety concern. PLEASE HOLD TOYOTA ACCOUNTABLE TO THIS SAFETY PROBLEM.

2012 Toyota Prius V, 125k. Sudden loss of braking power accompanied with BRAKE, BRAKE SYSTEM, SLIP INDICATOR, and PCS warning lights. Scan shows codes B2060 (ABS malfunction) and C1931 (Abnormal leak of brake ACC pressure). Brake fluid significantly lower. No signs of external leak. Can hear the brake booster pump running almost constantly. All signs indicate this is the issue identified in Customer Support Program 20TE07. This is a significant safety issue that may lead to loss of braking and serious injury / death. It should be a recall.

Small internal brake fluid leak inside the break booster assembly with master cilinder. Code c1391

While on the freeway, I was braking due to traffic and the car started shaking and the ABS light, "BRAKE" light and traction light all came on and remained on. The brake system did not operate properly, which nearly caused a collision.

The ABS system has malfunctioned. It shows "ABS", "Brake" and "Hillside assistance" lights on the dashboard. Have to push the brake pedal till the end for applying the brakes. This is causing a safety issue. Toyota knew about these brake issues as they have a Support program to replace these faulty parts with another part. The Support program is 20TE07 which is expired. Instead of considering this as a support program, they should be considering this as a recall. This is a safety issue as the ABS stops working at anytime.

Master cylinder failure that Toyota is aware of and should RECALL!!! I lost braking with my 10 year old son in the car and could have DIED!!!! Car has 62,000 miles on it! Ridiculous. Over 4,000$ to repair I’m being told. This is a significant Safety issue and you should make Toyota recall it!

Driving approx 35 MPH. Traction, Brake, ABS lights all illuminated. Went to brake and brakes went almost to floor with little to no braking power. Car felt out of control and unreactive. Slowed down, pumped brakes (brakes worked but not normal) and pulled over. It was extremely scary and happened out of the blue with no warning, I thought I was going to crash as car felt "slippery" and unresponsive/no braking. If there was a red light or someone stopped in front of me, I would have crashed. Tested and found code of C1391 ABS Anti-lock Brake System Abnormal Leak of ACC PRESS. Researched and found customer bulletin from Toyota POL18-03 and Customer Support Program ZJB. Safety at risk - near accident, could have been a huge accident, no warning and no brakes. This should be a recall! No warning lights prior to failure, lit at time of failure. I was completely unaware of the potential brake failures. Toyota should issue a recall or cover repair. I have been tossed back and forth between corporate & local dealer. Customer coverage expired June 29, 2022 for my car (10 yrs after 1st use). The incident occurred barely one month later on August 16, 2022. It is under 150,000 miles. Toyota refusing to assist or take responsibility for repair coverage. I have been given the runaround by Toyota and attempting to get a call from a case manager is near fruitless. One case manager left me a voicemail indicating that they cannot help me until I take the car to a local dealership to diagnose. So I did. Forced to Toyota, we carefully drove on side streets to the dealership only to be charged $130 for diagnosis & attempt to "upsell" extra services. Vehicle inspected by Toyota. C1391 replace brake booster assembly master cylinder and brake pump almost $3,000. We drove home white-knuckled. After many more phone calls and unable to speak to a case manager, I rec'd a voicemail indicating they will not cover due to expired June 29, 2022. Same issue happening w/other models - pls recall.

While commuting home by Prius has the traction control, ABS, brake light, and brake system indicator dash lights activate. I was able to make it to an autoparts store and the code C1391 was displayed. Researching this code points me to a safety issue that Toyota is aware of and their remedy ended in 2021. Toyota should warranty this known issue, especially for those people who were never notified of the failure of the brake accumulator and brake booster. I now am afraid to drive my vehicle due to potential failure of the brake system and the costs of the repairs are really expensive.

The brake booster started to make some noise every 5 seconds for about a week and one day when I was driving on the highway, all brake related warnings lights came on my dashboard. I want to brake and the brake did not hold correctly, once I touched it the car actually sped up then, I had to push hard to brake since that time the brake pedal is very hard to push and the car doesn't slow down at it should. I called Toyota many times for the extended warranty they had for this issue, but every time they apologize to me and they say it has expired. Although, I bought the car in March 2022 and the extended warranty expired on February 2022.( as they said). It is not fair that they have an extended warranty for brake booster for 10 years and when I get this same issue outside 10 years by one month, I'm not qualified. This is a safety issue and they are at fault. It should be for life to prevent disaster from happening and save innocent lives. Thank you. I have included some photos

Seven days ago, the hazard lights on our 2012 Prius suddenly would not turn off. By the time we got home, the brake, ABS, and the traction warning lights all came on. Two hours later, the hazard lights stopped blinking but the other lights were still on. We brought the car into the Toyota dealer for service the next morning (8/1/2022) to have the issue checked, notified the service writer of the hazard light being the initial issue. Mechanic cleared the codes and the lights all were off and stayed off after what he said was 2 test drives. We asked him if the mechanic had tested the hazards, to be sure they didn't stay on. He said the mechanic had left and we agreed to leave the car overnight so he could check that again. The service writer gave us a list of other repairs/maintenance we should have done but none of them was the brake booster acuator. We declined the other service and went home. Car drove fine. Yesterday morning, we woke up to see the hazard lights flashing, even though we hadn't egnaged them since the previous Sunday. Our neighbor noted he noticed them flashing at 2 am. We brought the car back to the dealer and when my husband spoke directly with the manager, he (manager) said that they weren't aware of the hazards flashing. That is a lie. I told the service writer when it was brought in and then we discussed it again that afternoon. Manager calls us late yesterday to say that we need to replace the brake booster acuator at the tune of $3400+. The manager told us this morning that Toyota had a recall on it but they weren't notifying people unless the issue occurred. He said there was recall coverage, which Toyota extended, but it expired 7/24/2022. We never received any mail or email notification of a recall and have only had our car serviced at this dealer. Why did they not warn people? We are outraged and livid. How is this kind of greedy chicanery allowed?

ABS system has malfunctioned- brakes lose pressure constantly (makes a barking noise when pressing on them or holding them down), and brakes feel very squishy. Car constantly makes whirring noise of actuator pump trying to function. Mechanic said on inspection that it was the abs actuator and potentially the master cylinder as well. Vehicle is unsafe to drive

Running errands and when I got back to my Toyota prius v many lights were illuminated including my brakes abs tire pressure traction lights were all on. Tool my car to dealer for them to gladly request $5,000 to repair this. Dealership told me "the repairs are going to be a new master cylinder + new brake booster pump + fluids as needed for repairs" . This is a known issue for 2012 to I believe 2014 prius model V. This is a huge safety issue and a manufacture error This should be recalled and covered by Toyota as shouldn't be any fault of my own. On today's world 5k is a crazy amount of money to fix a known issue thay could arise again. Toyota needs to do better to protect their customers. Shame on them.

2012 priusV has intermittent vsc and traction control when cornering left or right at slow speeds, as less than about 20mph, 5-20. This is happening on dry road conditions at unpredictable times. The vehicle may deceleration and have a lungeing behavior with traction and or bracking interrupted momentarily. On accelerating from stop sign turning left or right the vehicle may pause accelerating briefly and pull with the abs brake auto/ intermittently applied.The traction control light may or may not illuminate at the short time interval of these events, but traction control light does not stay illuminated after the event is over. No error code is read from the vehicle with error code reader. These events are very startling and cause sometimes cause the vehicle to speed up or slow down abruptly. These events are happening at low speeds, however with the car surging forward or abruptly slowing on corning and lane changes there is potential issues of keeping the vehicle under proper control at these times. I believe Toyota should correct this problem so that it never occurs. Toyota to Find a solution an implement a recall to update vehicle.

Faulty brake booster pump

I have the same issue as every other Toyota Prius owner. My car has 177,000 miles and Toyota quoted me $3200.00 to replace ABS system that causes Brake Failure and risk of Crashing. All the ABS lights come on and the car almost loses all braking power.

TCS, ABS, Check Engine, and Warning lights all came on at once. Brake pressure immediately decreased. After the following diagnosis, Toyota said the brakes will continue to worsen and fail completely. Error codes C1249 and C1391 were presented. Toyota dealership diagnosed a leak within the brake pump actuator and said these parts needed replaced: 04009-79147 Brake cylinder kit 04006-22212 Brake pump assembly

I have a 2012 Prius V with just under 65k miles. This morning I woke up to go to work, drove about 5 minutes down the road when suddenly the ABS, PCS, brake and traction control lights illuminated. My brakes felt much more stiff, the car took longer to brake, and I had to depress the brake pedal down much further than normal to get any braking response at all. I quickly scheduled an appointment to bring my vehicle to my local Toyota dealership for inspection. I was told by the service department that it will cost me $4.5K to replace the ABS actuator pump (47070-12020) and brake booster & master cylinder (47050-47110) because the system malfunctioned/failed. I was in shock! I quickly ask if Toyota had an open recall for the ABS brake malfunction/failure issue and was told no. That answer did not sit well with me because this is a serious problem. Plus, this should not happen to a vehicle with under 65K miles. I've owned several Toyota vehicles in the past and I’ve never had anything like this happen to me. Today, I searched “2012 Prius ABS Brake Issue” online, and found multiple stories similar to mine on blogs, posting, etc... about the Toyota Prius ABS brake problem. I even heard that Toyota had a program in place to address this issue but it expired in 2019. Vehicle owners had to fight to bring the issue to Toyota's attention in order to get their vehicle repaired before the end of the program. Can you tell me why the NHTSA haven't forced Toyota to issue a mandatory recall to address this serious and know safety issue? Toyota knows about this issue and should be held accountable to fix the problem. I don’t want anyone to lose their life due to this known issue. Please help force Toyota to keep the road safe for all of us. Thanks, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

MY brake warning lights have coming on for over 12,000 miles abs , vehicle stability off/ stability control and indicator and red brake light .Last week they came on and stay on .I took it to mechanic he told me there was a recall on them up to 150,000 miles .I don't see it on your site .The part is Toyota Brake Booster part Number - 47050-47180. I mention this to toyota in January and they said the light sometime just come on .I don,t know what the mileage should have anything to do about a recall

I took my vehicle in to the Toyota dealership last month because of a brake related noise that was concerning and a loss of brake sensitivity. The diagnostic showed that the brake booster was showing signs that is would fail soon. I was informed that there was a warranty program (ZJB) for it but the warranty required that a specific error code must be present (C1391), regardless of the obvious symptoms. They were unwilling to honor the no cost replacement even though everything but the error code was present. Fast forward to just under a month after the warranty period expired (16 APR 2022 was the expiration date, today is 13 MAY 2022) and the vehicles brakes nearly fail and the error code, which was required for the warranty replacement is now present. Toyota is unwilling to assist me in the slightest with the cost regardless of the inspection prior to expiration of the warranty showing that is was approaching failure and the error code showing shortly after expiration of the warranty. I never received a notice that there was even a warranty for the part in the first place, I was only informed when it took it in the first time, before the warranty expired.

The vehicle was traveling on the interstate at cruising speeds around 70 MPH when the braking system suddenly lost nearly all function. The dashboard began displaying multiple brake system warnings. There was no warning about potential failure. It was sudden and started when the brake pedal was not engaged. Some braking power remained, but it required full activation of the pedal. The vehicle was then driven very slowly to the next exit and later towed to the Toyota dealership for repair and inspection. The dealer has confirmed that this is the same error described in Toyota's Customer Support Program ZJB. Two adult passengers and one infant inside the vehicle and all other vehicles in the vicinity were at risk of suffering a high-speed crash.

ABS dashboard light and loss of brake efficiency originally occurred on 2/23/22 and it has stayed lit every time vehicle is driven since then - and brake efficiency is affected since then. The ability to brake on demand is of paramount safety concern to the driver and passengers of our vehicle and also to those around our vehicle. The vehicle is available for inspection upon request. The vehicle was confirmed to have the same issue called out in the Toyota Customer Support Program (CSP) (https://static.nhtsa.gov/odi/tsbs/2020/MC-10181800-9999.pdf): replace Brake Booster and Brake Booster Pump Assemblies. The vehicle had some of the same DTC codes mentioned in the CSP and a few more. I have a photo from 2/24/22 proving ABS lights came on. This falls within the CSP by date (10 year from being put in service for this vehicle would be on 3/2/22) and just 3k over by miles. We are a loyal Toyota household - this is one of 3 Toyota vehicles we have owned (two Prius and Sienna) - and are in the market for an EV, and are excited about Toyota's new entry BZ4X in EV market. Toyota looking other way is an insult to brand loyalty and also violates the "spirit" of such CSPs (as opposed to Recalls, where I would have gotten this repair done timely before this failure happened). Also, equivalent CSP for a different Prius model (Prius C) (announced in May 2021 - 8 months after Prius V program was announced in Sep 2020) allows for the same Brake Booster and Brake Booster Pump Assembly issue to be covered up to Nov 30, 2022 and unlimited miles. How does it make sense that a 2012 Prius C owner experiencing the exact same problem on the exact same components on the exact same date would be covered while a 2012 Prius V owner would be denied the benefit? I would like NHTSA to work with Toyota to extend the CSP program officially to cover more vehicle owners like us and not live them stranded. That is not we expect from a company that prides in quality workmanship, customer-centricity.

Brakes started making leaking sound when stopped at lights. Went to get diagnosed and was told I needed to have brake booster (toyota PN 47050-47180) and related pump assembly (Toyota PN 47070-47060) replaced. The specific cause note given by the technician: "FOUND BRAKE PUMP AND BOOSTER ASSEMBLY TO BE LEAKING INTERNALLY CAUSING PUMP TO ACUATE MORE THAN NORMAL WHICH WILL CAUSE THESE NOISES" Found out researching online that this is a common issue with the brake booster/master cylinder assembly affecting multiple models and model years of Toyota vehicles and a pending class-action lawsuit in Texas for it. Was told there was no recall but there was an extended service option. I was not made aware of this extended service option which they indicate in the program notes would be mailed to vehicle owners, and was told when the issue was diagnosed that my vehicle does not qualify for it.

The brakes are not working (ABS) I have to pamp brake

The contact owns a 2012 Toyota Prius. The contact stated that while starting the vehicle, the ABS, hybrid system, and traction control warning lights were illuminated. The dealer was made aware of the failure but informed the contact that the warranty was void due to a salvage title. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 102,000.

a warning light came in on my dashboard brakes regarding the Brake pump accumulator. It feels like my brakes are not working right, not stopping like they always did.I was scared I almost hit someone in front of me at a red light because after applying the appropriate notes due on the brake pedal I noticed a delay in the car stopping. I had the brakes checked by a mechanic and they are ok. This is very dangerous. Can the manufacturer be required to repair this defect? Thank for your help.

The Brake Booster pump assembly in the car has failed. Toyota issued a Customer Support Program to provide coverage for brake booster and brake booster pump assemblies, However, there are parameters limiting the age of the vehicle and mileage on the vehicle that exclude our car from the campaign. Therefore, the consumer is subject to pay for the entire cost of the repair, which can exceed $4,000. The malfunction occurs over time, and the part fails at a steady pace. Unfortunately, I was unaware of the issue until my ABS light came on, and the breaks became subject to malfunctioning. I took my car to the Toyota Dealership on January 29, 2022, and the dealership made no mention of the Safety Campaign which directly impacts my vehicle. In my opinion, Toyota has demonstrated negligence in regards to this issue. A full recall should be issued for this part. A Safety Campaign simply fails to completely resolve the issue at hand.

My 2012 Toyota Prius Hybrid: the brakes failed on 12/30/21 with virtually no warning which was very scary and could have caused fatalities and a crash. Luckily I was able to pull of the road and put on the e brake to stop the car but if the failure had happened about 10 mins earlier, I might have died because I was going 50 mpg coming down a large hill. I did some research and see that Toyota has KNOWN the brake booster assembly is bad on this model Prius yet they did not issue a full recall and are putting peoples' lives at risk! I am outraged, I was told by my local Toyota dealer that I could qualify for this "customer support program" but only after I had the break line (which also blew out) fixed so I spent $1,100 to fix the brake line then the booster/pump was still malfunctioning but then Toyota changed their tone and told me my vehicle has too many miles to qualify for the booster/pump replacement and then quoted me $4,500 to replace it !! This is an OUTRAGE, Toyota knows this is an issue but is skirting the issue and putting people in danger. It doesn't get much worse then brakes failing on a vehicle. I hope the government forces Toyota to do the right thing and slap them with a huge fine to teach them a lesson. This is not okay!

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The contact owns a 2012 Toyota Prius. The contact stated that while driving at 30 MPH, the ABS, traction control, and several other unknown warning lights illuminated on the instrument panel as the brake pedal became spongy. The contact initially drove the vehicle to an independent mechanic who informed her of a service bulletin related to the failure; he then instructed her to take the vehicle to the dealer. The vehicle was taken to the dealer and the contact was informed that the vehicle could not be covered under a warranty related to the failure. The manufacturer was also notified of the failure and confirmed that her vehicle was no longer covered under warranty; a case was filed with the manufacturer. The contact agreed to have the vehicle repaired by the dealer and the vehicle remained in their possession. The vehicle had yet to be repaired. The failure mileage was approximately 192,000. The VIN was not available.

Loud noises coming from braking system. Diagnosed by Toyota service technician as a failure of the brake booster and booster pump assemblies. This specific issue is acknowledged by Toyota per a Customer Support Program ZJB. My vehicle, a 2012 Prius with 130,000 miles, qualifies for coverage under the CSP, however Toyota is denying coverage as the vehicle has not displayed a warning light or code associated with the problem, despite a Toyota service tech confirming the issue. Toyota wants me to drive a vehicle with brakes that may completely fail at any given moment. The Toyota Brand Engagement team has been no help in trying to get the repairs covered under the CSP. Class action lawsuits appear to be filed in several states as Toyota has refused to issue a full recall.

The brake master cylinder/accumulator has failed causing multiple codes as well as dash lights for the brake and abs systems. I took the vehicle to the local Toyota dealership after reading about this problem in all other models of the Prius. I have just purchased the vehicle. They covered this issue with a free warranty replacement up until August of 2021. They had extended the warranty with restrictions until this next year. Reading about other models of the same car, the warranty still covers regardless of mileage. It's the identical part as other models that are still being covered. This is a $3000 dollar repair made in some vehicles for the identical part, but not in others. This is terrible customer service for an unsafe issue by Toyota. This issue does effect the braking in the vehicle and it is unsafe to drive. The regenerative braking also no longer is functioning changing the entire handling and characteristics of the vehicle.

My brakes gave out while driving with my infant child luckily I was almost home and made it without hitting anyone or seriously hurting myself and my child. Had car diagnosed error code c1256. Local dealership won’t repair because I “missed “ recall and my car has salvage title. I cannot afford to fix on my own and I’m shaking as I drive with my child to work everyday praying to get there in one piece because I have to work…

Vehicle has issue with brake booster and accumulator, making it dangerous to drive on the road as brakes would intermittently go out not allowing me to stop. Toyota Corporate had agreed to fix the vehicle originally based on good faith and acknowledgement of the defect under their "Customer Support Program" yet coerced me to go to the local dealership to get the repair, and now disclaims responsibility to cover the repair/parts costs. Toyota Corporate did call the dealer to authorize the repair on 12/14, but since then, have not paid for any of the repairs so my vehicle is being held hostage at the dealership.

I have a ABS alarm on my car. Toyota ABS C1391 (1/1) Current Abnormal Leak of ACC Press I tried to Talk to the Toyota I left a message with the service writer At Avondale Toyota In Arizona and left a message about my car problem They never returned a call to me! I have bought 4 new cars from Avondale Toyota. You would think they should return my call to talk about my cars brake problems I haven't received any return calls

Toyota did not inform us about a half recall on our family's Prius car. My wife driving yesterday with kids Christmas shopping and the brake pedal stopped working. She was able to thankfully to have space to let car slow down and pull off to side of road. People with a Toyota Prius need to know the brake pedal could stop working at any moment. The Toyota dealership says the repair is $2900 and they will not cover it. They advised I call Toyota so I did and spoke to 3 people advised and they said they would not. The half recall states online, which I dug and found after the dealership advisor told me about it, states that cars up until 8/31/2021 with unlimited milage are covered. After, then its 10 years from purchase and drops from unlimited milage to 150K. We are a few months from Sept and they would not make an exception and do the right thing. The cars is past the 150K milage BARELY, but still under 10 years. If the breaks had gone out in August 31st and a major accident happened would Toyota been liable? HAs this happened and people don't know? It's not right, not ethical, we were not informed of this at any point or even the last time I took the car into the dealership. The idea that others could have this happen to them or even get hurt out there is insane to imagine as a possibility actually a reality as it happened to us. Toyota headquarters brand representative (Monica supervisor) on phone told me that if my wife had the break pedal and system go out in August and died Toyota would have covered it. I almost dropped the phone. Others need to know about this. Do you know anyone with a Toyota Prius? or a Toyota? Please tell them the brake pedal could stop working at any moment and cause an accident. Please help us and together help others know about this. Toyota should have done the right thing, but they didn't. Toyota needs to alert others of this before someone gets hurt. The National Safety board needs to force to a full recall to REPLACE THEM

ABS/Brake Actuators on these cars are faulty! Not able to apply adequate pressure on the brakes to stop the car confidently. Brake actuator hissing notating that pressure is being lost. Brakes feel like they are skipping, and also making a loud "quack/screeching" noise. Brakes were inspected on my vehicle, and the pads had over 60% life left, and no damage to the rotots, so its the brake actuator at fault. A very common issue on 3rd generation prius models, and a $3000+ repair through toyota. Customer support program ZJB issued. Its not a recall, but instead an "extended warranty". Toyota will not fix the problem without dash warning lights on, so my car is just waiting to break down or cause an accident. I worry about my life and the brakes failing at some point. Ive taken it to two different mechanics and they both noted its a well known problem that toyota is trying not to pay out for.

I write to report that I asked for help at TOYOTA on the repair of the brake booster pump program. On August 19th, 2021 I took my Toyota Prius 2012 to my nearest dealer, in this case, Toyota of Homestead in Florida, US (I have a screen capture of the appointment); because the brake pump was pumping continuedly every 15 seconds regardless of the vehicle was in motion or stop parked; also the breaking felt like spongy and hesitant. I explained that to the Toyota dealer employee and he told me that the pump running every 15 seconds is not normal and agree that something was not right with my car's brake, but if there is not a MIL light ON, they can not replace my brake booster under the Toyota Program, and I have to pay $170.-first to "scan" the vehicle and make a diagnostic, well I told him that was too much money just to scan the vehicle since there was no light on in the dash the Toyota employee told me I will need to pay for the full brake pump replacement. That was unfair because the Toyota employee agree that definitely the brake was bad, but can not do anything. Took my car home and a few days later September 2nd, the brake lights came on. Well, my wife uses this car daily to transport our kids to school and to do the shopping necessary for food and supplies, and definitely, the cars do NOT break AS IT SHOULD. Toyota employee told me the repair will cost between $3000.- to $4000.-, I took the car to the Dealer when was covered under the Customer Support Program, but the light on the dash should NOT be the main factor to determine that the brake booster needs to be replaced. To be fair TOYOTA should recall all those vehicles. The Toyota dealer employee witness that there was a problem with the pump, and anybody with common sense that know this cars should immediately notice that the sound of the pump going on every 15 seconds is NOT NORMAL. This is my second Prius (My first one was a Toyota Prius C 2014) and I detect almost immediately with something is WRONG.

ABS Actuator and Booster Assembly failing. No recall was issued but a safety bulletin to the dealer with a cutoff date and nothing issued to consumer to know it needs to be replaced. Now I am outside their service bulleting window with a 3,000 repair that should be covered indefinitely by toyota

Brake Booster assembly has failed on my car preventing the regenerative braking to function normally and it could potentially lead to the brakes failing all together. Upon further research it seems to be a common issues with these vehicles and Toyota has a "Customer Support Program" under the code "ZJB" that will replace the faulty brake booster assembly. My car is still technically covered under the service bulletin that Toyota sent out but when I called several dealers and Toyota corporate, they notified me that my car was ineligible due to mileage. I was quoted over $3,000 at various dealers to replace the part to what amounts to a basically very expensive brake job. I am concerned for my safety in terms of the brakes failing while driving. This is my only vehicle and I have started to resort to driving on the city streets as opposed to the freeway.

The brake, abs, and stability control light come on and the brakes require more pressure to function. The problem is intermittent, but has been happening more often and for longer. The rotors, pads, and brake fluid were looked at within the last month and have no issues. I am getting a code C1391 Abnormal Leak in the Accumulator. The symptoms, as well as my car year and make match this recall, but I was never informed of this recall and there are no open recalls associated with my VIN. https://toyotatalk.com/wp-content/uploads/2019/03/ZJB-Phase-2-.pdf?fbclid=IwAR1I91f2ohQk73kYnbBYOlOi-yYlpgVNQ0leI3N8uWbg7V4IMKgULdG7F10

The brakes felt very spongy and the car was having a difficult time coming to a complete stop. The ABS, brake, and stability control lights turned on at the same time. Also, a whirring noise close to the passenger side started happening every 2-3 seconds. After some research I later learned that the noise is most probably coming from a brake pump assembly that has failed and is not able to keep pressure. The car is currently parked since I don’t feel safe to drive it. I contacted a local dealer to see if this part can be changed for free since this is not normal wear and is unsafe. I also learned in online Prius owner forums that there is a large group of Toyota Prius owners with the exact same issue.

LIGHTS CAME ON AND CODE ARE C1252 AND C1253, BEEPING SOUNDED AND BRAKES WHEN TO FLOOR AND WOULDN'T STOP.

BRAKE BOOSTER SLOWLY FAILING.... WHEN PRESSING BRAKES IT DOESN'T SMOOTHLY HOLD PRESSURE

MY TOYOTA PRIUS 2012 WITH 95K MIL. ABS, TRACTION AND BRAKE LIGHTS CAME ON WHILE DRIVING ON HIGHWAY, THE BREAKING WASN'T LIKE USED TO BE, IT WAS MUSHY AFTER THE WARNING LIGHTS, TOOK IT TO TOYOTA DEALERSHIP THEY ESTIMATED $3500 FOR THE BRAKE REPLACEMENT THE FAULT CODES C1241, C1247, C1391 FOUND BREAK BOOSTER AND PUMP ASSY, NEEDED. THIS SHOULD BE RECALLED BY TOYOTA, ITS SAFETY ISSUE, I HAVE OWNED THE CAR SINCE IT HAD 41K MILES AND REGULARLY MAINTAINED THE CAR THROUGHOUT MY OWNERSHIP PERIOD.

ENGINE -ENGINE HAVE BROKEN HEAD GASKET. COOLANT RESERVOIR STARTED TO DRAIN. COOLANT SLOWLY LEAKS IN INTERNAL COMBUSTION ENGINE DUE TO BROKEN HEAD GASKET. CAUSING SHAKING ENGINE BECAUSE COOLANT CANNOT COMBUST INSIDE THE ENGINE. -ALSO EGR COOLER WAS FULLY CLOGGED BY CARBON THAT CAUSED FAILURE OF CARBON AIR CIRCULATION. BRAKE SLOWLY FAILING BRAKE ACTUATOR IN THE PROCESS. WHEN PRESSING BRAKES, WHINING SOUND IS PRESENT AND BRAKES SLOWLY FAILS TO HOLD PRESSURE IN THE SYSTEM WHEN BRAKES ARE APPLIED. -BRAKE SYSTEM WAS FULLY INSPECTED AND NO LEAKS WERE FOUND AND BRAKE FLUID HOLDS IN FULL LEVEL.

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS V. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE ABS WARNING LIGHT ILLUMINATED AND THE BRAKE PEDAL FAILED TO OPERATE CORRECTLY. THE CONTACT COASTED THE VEHICLE TO THE SHOULDER OF THE ROAD, AND DEPRESSED THE BRAKE PEDAL EXTREMELY HARD FOR THE VEHICLE TO STOP. THE FAILURE OCCURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO BRYAN COLLEGE STATION TOYOTA (728 N. EARL RUDDER FWY, BRYAN, TX 77802, (979)776-0404) WHERE IT WAS DIAGNOSED HOWEVER, THE MECHANIC WAS UNABLE TO DUPLICATE THE ISSUE. THE TECHNICIAN CHANGED THE OIL AND ONE WEEK LATER THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE IT WAS DIAGNOSED A SECOND TIME AND IT WAS DETERMINED THAT THE BRAKE BOOSTER WAS FAULTY. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD NOT BEEN NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 220,000. THE VIN WAS NOT AVAIILABLE. ## VIN FAILED ## 2012 TOYOTA PRIUS ##

BRAKE MASTER CYLINDER AND BRAKE BOOSTER FAILED AND NEEDED TO BE REPLACED.

THE BRAKES BOOSTER AND BRAKE BOOSTER PUMP ASSEMBLY IS DEFECTIVE AND NEEDS TO BE RECALLED SINCE IT'S A MANUFACTURER ISSUE.

ABS , TRACTION CONTROL,BRAKE LIGHTS ON. NO POWER ASSIST BRAKE, NO ABS, NO TRACTION CONTROL

ON 11/3/2020, SEVERAL WARNING LIGHTS APPEARED ON THE DASH. AFTER RESEARCHING THE COMBINATION OF LIGHTS AND SOUNDS FROM THE BRAKE PEDAL I DETERMINED THAT THE BRAKE ACTUATOR IS FAILING. PER MY RESEARCH, CONTINUING TO OPERATE THE VEHICLE CAN RESULT IN A LOSS OF BRAKING ASSISTANCE. OTHER TOYOTA PRIUS MODELS ARE COVERED UNDER EXTENDED WARRANTIES (REFERENCE ZJB), BUT THE PRIUS V MODELS, WHICH USE THE SAME ACTUATOR, ARE NOT. AN ACCIDENT/INCIDENT HAS NOT YET OCCURED, BUT THIS SEEMS LIKE A HUGE CASE OF NEGLIGENCE ON TOYOTA.

A RECENTLY PURCHASED USED TOYOTA PRIUS V WHICH WAS OWNED BY A DEALER A MATTER OF 2 MONTHS AGO WAS SOLD TO ME AND THE ABS/BRAKE ACTUATOR FAILURE BEGAN. THE VEHICLE IS OUTSIDE OF THE 150K/10YR WARRANTY THEY WANT TO COVER, HOWEVER IS EXTREMELY DANGEROUS AND HAS ALREADY NEARLY CAUSED ME TO BE IN AN ACCIDENT AS THE BRAKE POWER MASSIVELY FLUCTUATES. I WAS DRIVING ON THE HIGHWAY AT THE 75MPH FROM PHOENIX TO TUCSON APPROX 120 MILES. THE LIGHT CAME ON PART WAY THROUGH AND SUDDENLY THE BRAKES WENT FROM BEING SENSITIVE AND RESPONSIVE TO NEEDING A LOT OF PRESSURE APPLIED TO PROPERLY SLOW. WHEN A DIESEL BIG RIG SWERVED IN FRONT OF ME TO AVOID AN OBSTACLE THAT I WOULD EASILY HAVE BEEN ABLE TO BRAKE FROM TYPICALLY, I WAS NEARLY SLAMMED INTO THE BACK END OF HIM WITH VERY LITTLE POWER. THE LIGHT FLIPPED BACK OFF ABOUT TIME I MADE IT TO TUCSON, THEN WHEN COMING TO A STOP AT A DANGEROUS INTERSECTION ON MY WAY THROUGH CITY STREETS HOME CROSSING KOLB AND VALENCIA (A SITE OF MANY AN ACCIDENT), I NEARLY WENT INTO THE INTERSECTION WHEN THE BRAKE SYSTEM SUDDENLY CUT OUT AGAIN. WHEN I SPOKE TO THE LOCAL DEALERSHIP THIS MORNING THEY TOLD ME THIS WAS A KNOWN PROBLEM BUT SINCE IT WAS OUT OF WARRANTY I'D HAVE TO COVER 2500 TO REPLACE WHAT IS A KNOWN DEFECT WITH THIS VEHICLE. THAT'S [XXX] AND DANGEROUS. REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *CC

THE ABS BRAKE PUMP EXPERIENCED AN "INTERNAL FAILURE" AT MILEAGE OF 113K. THERE IS A CUSTOMER SERVICE NOTICE THAT COVERS 2012 TOYOTA PRIUS AND PRIUS PLUG IN FOR THE SAME ISSUE REGARDLESS OF MILEAGE UNTIL 2019, AND THEN UP TO 150K MILES AFTER THAT. HOWEVER, MY 2012 PRIUS V WAS NOT COVERED. THIS ABS BRAKE PUMP JUST SUDDENLY FAILED, THERE WEREN'T ANY LEADING INDICATORS. TOYOTA KNOWS IT SUPPLIED DEFECTIVE PARTS FOR THE ABS BRAKE PUMP. THERE IS ALREADY A LAWSUIT OF OTHER 2012 PRIUS V OWNERS COMPLAINING OF THE SAME. HOWEVER, TOYOTA HAS NOT CORRECTED THEIR SERVICE NOTICE. THEY WON'T RELEASE THE DETAILS OF HOW THEY CAN JUSTIFY COVERAGE TO ALL OTHER 2012 PRIUS, AND PRIUS PLUG-IN, BUT NOT PRIUS V. THE REPAIR IS SIGNIFICANT ~ $3,500. ALSO, LAST YEAR MY ENGINE BLOCK WAS CRACKED AND NEEDED TO BE REPLACED. THANKFULLY, THIS HAPPENED ~ 80K MILES, SO IT WAS STILL UNDER EXTENDED WARRANTY. BUT THIS FAILURE WAS SURPRISING FOR A TOYOTA. I HAD WONDERED WHY I HAD TO CHANGE THE OIL MORE QUICKLY THAN THE RECOMMENDED 10K, I WOULD CHANGE IT EVERY 5-7K, OR AT LEAST HAVE IT CHECKED. IT SEEMS THEY HAVE THE SAME ISSUES WITH THEIR 2020 RAV 4S. I'M SURPRISED THEY HAVEN'T FIXED AN ISSUE FROM A 2012 VEHICLE YET BY 2020.

TL-

MY 2012 PRIUS WAS DIAGNOSED AT OUR TOYOTA DEALERSHIP. THEY SAID IT NEEDS A BRAKE BOOSTER/SOLENOID. WHEN I LOOKED INTO IT, IT SEEMS THAT THIS HAS HAPPENED TO HUNDREDS OF CONSUMERS WITH PRIUS CARS FROM THE SAME ERA. IT IS A DEVASTATING $3,000 REPAIR. TOTAL INJUSTICE IF IT IS A MANUFACTURER ISSUE AS IT SEEMS.

MY ABS ACTUATOR HAS COMPLETELY FAILED. I WAS GETTING CODE C1391 WHEN I FIRST HAD THE PROBLEM DIAGNOSED AND RECENTLY IT FINISHED FAILING COMPLETELY. I WAS ON THE HIGHWAY WHEN IT DID AND I SEVERELY LOST BRAKE PRESSURE AND ALMOST GOT IN A CAR ACCIDENT BECAUSE OF IT. THIS ISSUE WAS RECALLED ON REGULAR PRIUS HATCHBACKS BUT BECAUSE THE PRIUS V'S ABS PUMP SYSTEM IS SLIGHTLY DIFFERENT TO COMPENSATE FOR THE DIFFERENT WEIGHT OF THE PRIUS V, THE PRIUS V DOEST FALL UNDER THE EXTENDED WARRANTY TO HAVE THE ISSUE FIXED EVEN THOUGH IT IS THE EXACT SAME ISSUE THAT THE REGULAR PRIUS' HAVE BEEN HAVING WHICH THEY EXTENDED THE WARRANTY ON. IM EXTREMELY FRUSTRATED BECAUSE I HAVE CALLED MY DEALERSHIP AS WELL AS THE TOYOTA HELPLINE TO REPORT THIS AND THEY SAY THAT THERES NOTHING THEY CAN DO FOR ME AND THAT MY CAR IS JUST NOT COVERED UNDER THE EXTENDED WARRANTY BECAUSE THE WARRANTY DIDNT APPLY TO PRIUS V'S EVEN THOUGH ITS THE SAME PART HAVING THE SAME ISSUE. I'VE BEEN QUOTED $4,000 TO HAVE THIS FIXED AND I CAN'T AFFORD THAT RIGHT NOW.

THE MASTER BRAKE CYLINDER BROKE DOWN ON MY CAR. THE WARNING LIGHTS FINALLY CAME ON HOWEVER THE ISSUE WAS NOTICEABLE BEFORE THAT AS THE CAR BRAKING AT LOW SPEEDS CREATED SLIGHT STUTTERING STOPS WHEN COMING TO THE END OF A COMPLETE STOP PLUS MORE IMPORTANTLY, WE NOTICED BRAKING WAS GETTING MORE DIFFICULT AT CERTAIN TIMES. THIS ISSUE IS CREATING A COST OF OVER $3000 TO REPAIR. NUMEROUS OTHERS EXPERIENCED THIS SAME ISSUE WITH THE PREVIOUS PRIUS MODEL (GEN 3) AND TOYOTA ACKNOWLEDGED IT AND EXTENDED THE WARRANTY TO THOSE MODELS BUT NOTHING SEEMED TO BEEN HAVE CORRECTED WITH THE PRIUS V. *TR

THE ACTUATOR HAS BEEN MAKING NOISE FOR THE PAST YEAR . I TOOK IT TO THE DEALER ABOUT FEB 2019 AND SINCE MY WARRANTY HAD JUST EXPIRED THE DEALER WOULD NOT FIX. AND TODAY IT'S BEEN WORSE . EVERY TIME I AM AT A STOP IT MAKES TONS OF NOISE. *TR

BRAKE LIGHT/TSC LIGHT ON DASH WAS ON. THERE APPEARED TO BE NO DIFFERENCE IN DRIVE-ABILITY, BUT THERE WAS A HUMMING NOISE PRESENT AT IDLE AND 20-30 MPH. TOOK CAR TO DEALER 4/30/2019 FOR CHECK. COGGINS TOYOTA IN JACKSONVILLE, FL DETERMINED THE CAUSE WAS A, ABNORMAL LEAK IN THE ACCUMULATOR. THEY REPLACED THE BRAKE BOOSTER/MASTER CYLINDER ASSEMBLY. AFTER THE NEW EQUIPMENT WAS INSTALLED, THE TECHNICIAN NOTICED THE NEW PUMP ASSEMBLY HAD EXCESSIVE NOISE AND VIBRATION INTERNALLY SO ANOTHER REPLACEMENT PART WAS ORDERED. NEW PUMP ASSEMBLY BRAKE BOOSTER WAS INSTALLED AND CAR WAS PUT BACK IN SERVICE 5/19/2019. TOTAL COST OF THIS SERVICE WAS $2,745.11. WE LATER LEARNED THAT A CUSTOMER SUPPORT PROGRAM CSP ZJB WAS ISSUED BY TOYOTA FOR 'CERTAIN" 2010 PHD PRIUS, "CERTAIN" 2011-2015 PRIUS, AND "CERTAIN" 2012-2015 PHV PRIUS. AS PER THE CSP ZJB MAILING TO OUR RELATIVE WHO ALSO OWNS A PRIUS, THE PROBLEM WAS "WITH THE BRAKE BOOSTER AND BRAKE BOOSTER PUMP ASSEMBLIES". ACCORDING TO DIANNE, CUSTOMER SERVICE REP WITH TOYOTA, THESE VEHICLES INCLUDED IN THE CSP ZJB WERE PRODUCED BETWEEN OCTOBER 2010 TO NOVEMBER 2015 AND INCLUDED SOME 946,100 VEHICLES. MY VEHICLE WAS NOT INCLUDED IN THIS PROGRAM AS THE VIN NUMBER DID NOT MATCH THE AFFECTED VEHICLES. HOWEVER, WE HAD THE SAME PROBLEM WITH OUR VEHICLE THAT THE PROGRAM WAS INITIATED TO INCLUDE. UPON SUBMITTING A REQUEST FOR REIMBURSEMENT FROM TOYOTA FOR THE COST ASSOCIATED WITH REPAIRS, IT WAS REJECTED. WE BELIEVE THE PROBLEM FOR WHICH THE SERVICE PROGRAM WAS INITIATED IS THE SAME PROBLEM WE EXPERIENCED AND OUR VEHICLE VIN SHOULD BE ADDED BY TOYOTA TO THE LIST OF AFFECTED VEHICLES SO THAT IT BECOMES ELIGIBLE FOR EXPENSE REIMBURSEMENT.

1)INTERMITTENT REGEN BRAKING FAILURE CAUSING BRAKES TO BECOME MORE DIFFICULT TO PRESS THUS HARDER TO STOP THE CAR IN A TIMELY MANNER. USUALLY WHEN THERE IS STOP AND GO DRIVING WILL THE REGENERATIVE BRAKING FAIL. 2) CLOGGED EGR VALVE CAUSING A LOUD ENGINE KNOCK RESULTING IN A BLOWN HEAD GASKET.

ABS WARNING LIGHT INDICATING TROUBLE WITH THE BRAKING SYSTEM, I TOOK THE CAR TO AN INDEPENDENT AUTO REPAIR STORE AND THE MECHANIC CHECKED THE CODES ON HIS COMPUTER AND RECEIVED 2 CODES THAT INDICATING THAT THE ABS PUMP NEEDS TO BE REPLACED. THE TOTAL COST WOULD BE BETWEEN $3000 TO $5000. THE ABS LIGHT GOES ON WHEN I START THE CAR

BROUGHT CAR IN FOR RECALL J0V00D AND IMMEDIATELY AFTERWARDS THE ABS,TRACTION-CONTROL, BRAKE LIGHT CAME ON. THE LIGHTS WENT ON AND OFF AND THEN STAYED ON. WENT BACK TO DEALER AND WAS TOLD IT NEEDED A $3800.00 REPAIR. WAS TOLD THAT CERTAIN VIN NUMBERS WERE AFFECTED, BUT NOT MY VIN#. NOT SURE HOW THIS IS POSSIBLE SINCE I AM READING ALL OVER THE INTERNET THAT THIS IS A PROBLEM ON THIS YEAR CAR ALSO? I WAS DRIVING ON HIGHWAY US 19 IN CLEARWATER, WHEN THIS ALL HAPPENED.

UNLIKE OTHER 2011-2015 TOYOTA PRIUS VEHICLES THE PRIUS V IS NOT COVERED UNDER TOYOTA'S CSP-ZJB CUSTOMER SUPPORT PROGRAM. MY 2012 PRIUS V HAS ALL THE INDICATIONS OF THIS BRAKE BOOSTER AND PUMP PROBLEM... MULTIPLE LIGHTS ON THE DASH (BRAKE, ABS, PCS ..... ON; CODES C1252 & C1256; AND BRAKE BOOST PUMP RUNNING EVERY 6-8 SECONDS PLUS A BRAKE PEDAL THAT YOU CAN PUSH TO THE FLOOR IN 4-5 SECONDS. IN HARD BRAKING I'VE HAD TO PUMP THE BRAKE PEDAL TO GET STOPPED. IT'S MY WIFE'S CAR BUT SHE WILL NOT DRIVE IT ANYMORE. TOOK THE CAR TO A TOYOTA DEALER WHO WAS AWARE OF THIS PROBLEM AND STARTED TO HAVE IT FIXED AT THEIR EXPENSE UNTIL HE PUT THE VIN # IN HIS COMPUTER. HIS ESTIMATE WAS $2500+ TO HAVE THE PROBLEM FIXED AFTER I PAID TO HAVE THE PROBLEM DIAGNOSED EVEN THOUGH HE KNEW WHAT THE PROBLEM WAS. I DECLINED AND CALLED TOYOTA CUSTOMER SERVICE WHICH WAS A WASTE OF TIME...SORRY, YOUR CAR IS OUT OF WARRANTY AND YOUR CAR DOES NOT HAVE A PROBLEM WE WILL COVER. ON THE NET, THERE ARE MULTIPLE PRIUS V OWNERS WITH THE SAME PROBLEM THAT STARTED IN 2008. UNTIL SOMEONE WITH A BIGGER STICK (NHTSA), TOYOTA IS SAYING THERE ISNOT A PROBLEM WITH THE PRIUS V BRAKES.

WHILE DRIVING THE BRAKES WENT OUT. I BROUGHT THE CAR TO TOYOTA AND THEY SAID THE BRAKE BOOSTER IS DEFECTIVE AND NEEDS TO BE REPLACED THE PRICE TO DO SO IS ABOUT $3,000 THEY ALSO SAID THEY DON'T KNOW WHY THIS HAPPENED AS IN SOME CASES YOU NEVER HAVE TO REPLACE A BRAKE BOOSTER NOR MASTER CYLINDER

IGUALMENTE QUE LOS CARROS PRIUS REGULARES, EL CUAL HAY UNA GARANTIA EXTENDIDA, MI EL AUTO DAO LA BOMBA DE FRENOS, LO CUAL ES MUY COSTOSA, ESTA GARANTIA SOLO ES SOLO PARA PRIUS REGULARES IGUALMENTE UTILIZAN EL MISMO SISTEMA. SE DEBE VERIFICAR PORQUE NO CUBRE LOS OTROS AUTOS YA QUE TIENEN EL MISMO SISTEMA.

I REPLACED MY BRAKE BOOSTER THREE TIMES IN TWO MONTHS.STILL I HAVE BIG ISSUES WITH TOYATA COMPANY.

MY ENTIRE BREAKING SYSTEM WENT OUT WHILE DRIVING TO WORK ON A BUSY ROAD, WHERE I HAD TO PULL OVER TO THE SIDE TO SEE WHAT WAS WRONG, AS I HAD NEVER SEEN THOSE FIVE LIGHTS LIGHT UP EVER, AS THIS IS NOT A TYPICAL ISSUE THAT WOULD EVER BREAK WITHOUT A MANUFACTURING ISSUE. I WAS NEVER NOTIFIED OF A SPECIFIC ISSUE WITH CERTAIN 2011-2015 PRIUS VEHICLES THAT ARE INVOLVED IN A CUSTOMER SUPPORT PROGRAM ZJB. I HAVE NOW PAID $100 TO TOYOTA TO DIAGNOSE THIS PROBLEM, WHICH WAS NOT NECESSARY, AS IT IS OBVIOUSLY THE EXACT ISSUE (5 LIGHTS LUMINATED) FROM THE CUSTOMER SUPPORT PROGRAM, AND THEY HAVE TOLD ME THAT I WAS NOT NOTIFIED OF THE ISSUE BECAUSE MY VIN IS NOT INCLUDED IN THE PROGRAM. IT HAS BEEN DIAGNOSED WITH THE EXACT BREAK BOOSTER ISSUE LISTED IN THE LETTER SENT TO OTHER VIN NUMBERS. I DRIVE CHILDREN AROUND IN THIS CAR, AND THIS ISSUE IS SEVERE AND SHOULD CLEARLY BE FOR A LARGER NUMBER OF CARS THAN THEY ARE ADMITTING. I HAVE NOW BEEN TOLD THAT THEY WILL NOT PAY FOR THE $3,000 IN REPAIRS BECAUSE IT IS NOT INCLUDED. THIS IS UNACCEPTABLE. THIS IS A SAFETY HAZARD ON THE ROAD AND UNBELIEVABLE THAT I WOULD PAY EXTRA MONEY FOR A TOYOTA BECAUSE IT IS SUPPOSED TO BE A SAFE AND RELIABLE CAR, ONLY TO FIND OUT THEY WILL NOT ADMIT WHEN THEY HAVE A WIDESPREAD BREAK MANUFACTURING ISSUE WITH THEIR VEHICLES. MY ONLY RECOURSE THOUGH TOYOTA I AM TOLD IS TO MAKE A CASE NUMBER AND IF MY VIN HAPPENS TO BE ADDED TO THE LIST, THEY MAY REIMBURSE ME. THIS IS UNACCEPTABLE. TOYOTA NEEDS TO RECALL ALL VINS FOR THIS ISSUE, SO CONSUMERS ARE AWARE THAT THEIR BREAKS MAY FAIL AT ANY MOMENT.

THE BRAKE LOSES ITS GRIP OVER A ROUGH ROAD BUMP WHILE PULLING IN FOR A STOP. VERY VERY NOT SAFE, I ALMOST REAR ENDED A CAR IN FRONT OF ME A COUPLE OF TIMES. CREATES EXTREMELY UNSAFE FEELING. BRAKE LOSS HAPPENS ALL THE TIME OVER BUMPY ROAD ONLY.

THE BRAKES FAILED WHILE DRIVING. ALL THE ABS, BRAKE LIGHTS AND A CONTINUOUS BEEP SOUND TURNED ON. I ALMOST HAD A CRASH. IT WAS THE BRAKE ACTUATOR PUMP AND I READ ABOUT MULTIPLE OWNERS HAD COMPLAINS WITH IT.

MY 2012 PRIUS V WITH ONLY 55,000 MILES. ABS LIGHTS CAME ON AND BUZZING SOUND EVERY 3 SECONDS FROM JUST IN FRONT OF STEERING COLUMN. TOYOTA DEALER CHARGED $270 FOR COMPUTER DIAGNOSTIC THEN GAVE ME A PARTS AND LABOR ESTIMATE FOR REPLACING BRAKE BOOSTER AND MASTER CYLINDER OF $4400!!! INDEPENDENT MECHANIC CAN ORDER PARTS FROM ANOTHER TOYOTA DEALER IN MAINLAND US FOR $1400 LESS THAN THE $3200 THAT DEALER IN HAWAII QUOTED AND LABOR FOR MUCH LESS. BUT STILL WILL BE COSTING ME ABOUT $2500. SEARCHED RECALL SITES AND REGULAR 2012 PRIUS MODELS HAD RECALLS FOR EXACTLY THE SAME ISSUE BUT NO RECALL ON 2012 PRIUS V BRAKES?

I STARTED MY CAR AND MY DASH LIGHTS FOR BRAKES, ANTI-LOCK, ANTI-SKID CAME ON AND BRAKES BECAME SPONGY. THIS HAPPENS INTERMITTENTLY. I PARKED THE CAR AND LATER CHECKED THE LIGHTS AND THE CAR WAS OPERATING NORMAL. I DROVE THE CAR AROUND THE NEIGHBORHOOD TO TRY TO DUPLICATE THE ISSUE. COULD NOT DUPLICATE. THE NEXT DAY I STARTED THE CAR THE LIGHTS CAME ON AGAIN AND BRAKES WERE NOT OPERATING NORMALLY. SPONGY AND NO ANTI-LOCK. I CHECKED RECALLS AND FOUND THE ISSUE WAS RECALLED IN 2010. I ALSO FOUND NUMEROUS COMPLAINTS ON PRIUS FORUMS FOR THIS ISSUE COVERING 2012 PRIUS. I THINK THIS IS A SAFETY ISSUE TOYOTA SHOULD RECALL FOR 2012 AS WELL.

CAR WAS IN MOTION AND BRAKE PEDAL WENT HALF WAY TO FLOOR AND ABS, BRAKE, TRACTION CONTROL AND TIRE SENSOR LIGHTS CAME ON. MASTER CYLINDER OR BRAKE BOOSTER SEEM TO HAVE FAILED. DEALER DIDN'T RECOGNIZE CODES AND COULD ONLY RECOMMEND CHANGING SPARK PLUGS WHEN I JUST HAD THEM REPLACE 6-8 MONTHS PRIOR. EXPLAINED THAT DID THINK THAT HAD ANYTHING TO DO WITH BRAKES GIVING OUT. THEY RESET CODES AND SURE ENOUGH HAPPENED AGAIN WITHIN THE NEXT 30 DAYS. TOYOTA ADMITTED TO SINCE RECEIVING MANY REPORTS OF CERTAIN INTERNAL MALFUNCTIONS OF BRAKE BOOSTER ASSEMBLIES. 4 TRIPS LATER TO DEALER THE RESPONSE IS THE CODES ARE NOT COMING UP (DTCS) C1391, C1252, C1256 OR C1253 IN ORDER TO BE COVERED IT'S VOLUNTARY CUSTOMER SUPPORT PROGRAM WHICH HAS BRAKE BOOSTER AND BRAKE BOOSTER PUMP COVERAGE. VERY FRUSTRATING!

MY CAR HAS THE SAME BRAKE BOOSTER/MASTER CYLINDER DEFECT THAT THE 2010/11 MODEL PRIUS WERE RECALLED FOR. BRAKE BOOSTER OR BRAKE PRESSURE ACCUMULATOR FAILURE ON 2012 MODELS CAUSES LOSS OF BRAKING EFFECTIVENESS. SERIOUS SAFETY ISSUE THAT CAN CAUSE DEATH. TOYOTA IS WELL AWARE OF THIS. THIS HAPPENS IN MOTION AT HIGHWAY SPEEDS.

MY 2012 TOYOTA PRIUS II THREW ERROR CODE C1391 ABNORMAL LEAK IN ACCUMULATOR. I'VE RESET IT AND ITS COME BACK ON AGAIN. REGENERATIVE BRAKING HAS GONE OUT AND STOPPING IS DIFFICULT. THIS IS NOT RIGHT. MY CAR HAS JUST OVER 130,000 MILES

COMPLETE BRAKE FAILURE ON THE FREEWAY!!! ABS, BRAKE AND TRACTION CONTROL LIGHTS LIT UP. ALMOST CRASHED! CODE C1391-ABNORMAL LEAK IN BRAKE ACTUATOR PUMP. HOW LONG WILL IT TAKE THIS AGENCY TO MAKE TOYOTA FIX THIS?? ITS A SAFETY ISSUE!!! STOP PICKING YOUR ASSES AND DO SOMETHING ABOUT IT!!!!

VSA, AVS, AND BRAKE LIGHTS ON WITH DECREASED RESISTANCE IN PETAL. BRAKES WILL RETURN TO NORMAL WITHOUT WARNING PERIODICALLY WHILE DRIVING. THIS MAKES DRIVING AND STOPPING UNSAFE AND UNPREDICTABLE.

TRACTION, BRAKE AND ABS LIGHTS ALL CAME ON AT ONCE, PRATICALLY LOST ALL BRAKING WHILE DRIVING BUT ABLE TO SLOWLY STOP. SQUISHY BRAKES. "PUMP" SOUNDING NOISE LIKE IT'S HAVING TROUBLE PUMPING BRAKE FLUID.

I HAVING A PROBLEM WITH THE BRAKE BOOSTER ON MY PRIUS AND THE TOYOTA DEALERSHIP I WENT TO SAID I NEED TO REPLACE BOTH THE MASTER CYLINDER AND BOOSTER PUMP WHICH WOULD BE 3000 DOLLARS WORTH OF PARTS AND LABOR. AFTER RESEARCH THIS ISSUE I HAVE FOUND SERVAL PEOPLE HAVE THE SAME ISSUE. ALSO THE PARTS ARE ON BACK ORDER, SHOWING YOU HOW BIG OF ISSUE THIS IS. THE BREAKING SYSTEM FELT SPONGY, MY TRACTION CONTROL BRAKING SYSTEM AND ABS LIGHTS CAME ON. THANKFULLY I HAD JUST A COUPLE OF FEET TO MY DRIVEWAY.

CAR EXPERIENCED GREATLY DIMINISHED BRAKING POWER ON INTERSTATE 75 PRIOR TO APPROACHING HEAVY TRAFFIC BACKED UP TO EXIT. MANY WARNING LIGHTS ILLUMINATED ON THE DASH: BRAKE, ABS, ETC. TOYOTA HAS ALREADY ISSUED A WARRANTY EXTENSION FOR THIS ISSUE FOR THE STANDARD MODEL PRIUS, AND I BELIEVE THIS IS A SAFETY HAZARD ON THE PRIUS V WAGON AS WELL.

WHEN THE BRAKES ARE APPLIED AND GOING OVER A ROUGH ROAD SURFACE, OR POTHOLE, THE BRAKE WARNING LIGHT APPEARS, AND THE BRAKES SUDDENLY STOP FUNCTIONING UNTIL BACK ON A SMOOTH ROAD SURFACE. THIS HAPPENS ALL OF THE TIME UNDER THESE CONDITIONS. IT IS REALLY SCARY WHEN THE VEHICLE SUDDENLY LOSES ALL BRAKING WHILE TRYING TO STOP. I HAVE A 2012 TOYOTA PRIUS AND A 2010 TOYOTA PRIUS. THEY BOTH HAVE THE SAME PROBLEM WITH THE ABS BRAKING SYSTEM. CANNOT UNDERSTAND WHY THIS IS NOT A FULL RECALL ON THIS POTENTIALLY DANGEROUS CONDITION.

THE CAR HAS BEEN SUFFERING ALL OF THE BRAKE SYMPTOMS FOR THE RECALL OF THE 2010 PRIUS BRAKE BOOSTER SYSTEM. I'VE REPEATEDLY COMPLAINED ABOUT LOSING BRAKING POWER WHEN THE ABS LIGHT COMES ON WHEN I GO OVER UNEVEN SURFACES SUCH AS RAILROAD TRACKS OR A POTHOLE. THE BRAKES HAVE BENN FARTING FROM DAY ONE WHILE SITTING AT A LIGHT OR PARKED IF THE BRAKES ARE DEPRESSED AND THEN SLIGHTLY RELEASED. AND NOW TODAY THE ABS BRAKES ARE ON WITH THE BATTERY LIGHT AND THERE IS LIMITED BRAKING POWER. I HAVE TO PUSH ALMOST ALL THE WAY DOWN BEFORE THE BRAKE ENGAGES. TOYOTA TELLS ME I NEED TO REPLACE THE BRAKE BOOSTER SYSTEM FOR $3500 AND THERE ARE ONLY 70,000 MILES ON MY 2012 CAR. I FEEL MY BRAKES HAVE THE SAME ISSUES AS THE 2010 RECALL AND MORE YEARS INCLUDING MINE ARE AFFECTED AND SHOULD BE RECALLED.

TAKATA RECALL. RIGHT AFTER RECALL NO 18V-684 UPDATE SYSTEM ON MY PRIUS AT LOCAL TOYOTA DEALER MY CAR BRAKES PEDAL BECOME VEIRD . WHEN I JUST START ON THE ENGINE THN START MOVING AND STOPING, THE BRAKE PEDAL IS REALLY UP AND NOT MOVING DOWN AND BRAKES CAR REALLY QUICK. AT THE SAME TIME WHEN I START DRIVING I HEAR THAT REAR WRITING BRAKES FOR ABOUT 1-2 MILES. THEN IT COME OFF AND BRAKE PEDAL GOES DOWN LITTLE BIT TO NORMAL POSITION AND WORKS GREAT. THIS IS HAPPEN EVERY TIME WHEN SHOT DOWN ENGINE AND START AGAIN TO GO SOMEWHERE. ITS REALLY DANGEROUS BACOUS THE POSITION OF BRAKE PEDAL SOMETIME UP SOMETIMES DOWN, CAN NOT PREDICT HOW SOON YOU CAN STOP WHEN ITS NEEDED. IT ALWAYS HAPPEN NOW WHEN I DRIVE IN MY CITY ROADS. I CAME BACK TO DEALER THAT DID UPDATE SYSTEM ON MY CAR, THEY SAID THAT I NEED TO PAY TO FIND OUT WHAT IS GOING ON WITH MY CAR, THEY WILL CHARGE ME EVEN IF THIS HAPPEN AFTER THEIRE RECALL UPDATE SYSTEM ON MY CAR. THIS IS HORRABLE.

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS V. WHILE DRIVING AT ANY SPEED, THE BRAKES MADE NOISE AND THE ABS FAILED. THE VEHICLE WAS TAKEN TO VENICE TOYOTA (941-451-5150, LOCATED AT 900 U.S. 41 BYPASS, VENICE, FL 34285) WHERE IT WAS DETERMINED THAT THERE WAS NO RECALL. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 110,000.

THE VEHICLE WAS TRAVELING OVER 60 MPH WHEN THE ABS, BRAKE AND TRACTION LIGHTS CAME ON AND THE BRAKE BECAME IMMEDIATELY SPONGY AND I HAD TO DEPRESSED EVEN HARDER (PAST THE FOAMINESS) TO REDUCE SPEED. A MOTOR COULD BE HEARD TRYING TO TURN OVER ON THE BRAKE SYSTEM. THE CAR SPEED WAS REDUCED TO 25-30 MPH ON THE HIGHWAY BUT THE SPONGY BRAKES CONTINUED. WITHIN 5 MIN I PULLED OFF THE HIGHWAY AND INTO A PARKING LOT. PARKED THE CAR, TURNED IT OFF AND ON TO SEE IF THAT WOULD REMEDY THE SITUATION AND NOTHING CHANGED. I THEN CALLED THE TOYOTA DEALERSHIP'S SERVICE DEPARTMENT TO BOOK AN IMMEDIATE APPOINTMENT AND ARRIVED AT THE DEALERSHIP APPROXIMATELY 40 MINUTES LATER. THE CAR WAS LOOKED AT AND I WAS TOLD THAT THE BRAKE ACTUATOR WAS THE ISSUE AND THAT THEY WOULD LIKE TO CONTACT TOYOTA TO SEE IF THIS WAS IN WARRANTY OR PART OF THE RECALL. I WAS TOLD THE NEXT DAY THAT THE COST OF INSTALLATION AND PARTS WOULD BE AT LEAST $4,000 AND THAT I WOULD NEED TO PAY THE FULL AMOUNT AS TOYOTA WAS TAKING NO RESPONSIBILITY. I CALLED THE TOYOTA CUSTOMER SERVICE LINE, EXPLAINED MY SITUATION AND WAS TOLD THE SAME THING AS I WAS TOLD AT THE DEALERSHIP. I FEEL THAT THIS BRAKE ACTUATOR (ITS PARTS, ITS COMPOSITION AND/OR ITS INSTALLATION) IS A SYSTEMIC ISSUE WITH TOYOTA PRODUCTS AND A KNOWN ISSUE WITH TOYOTA PRIUS' IN 2009 AND 2010. TANGENTIAL TO THIS ISSUE, MY FATHER OWNS A TOYOTA CAR AS WELL AND HAS ALSO HAD TO HAVE HIS ACTUATOR REPLACED THIS YEAR. TOYOTA SHOULD BE HELD RESPONSIBLE FOR ALL FAULTY PARTS AND INSTALLATION AND PURCHASE OF NEW PARTS. MY MAINTENANCE RECORD IS EXEMPLARY AND MY DRIVING RECORD IS AS WELL SO THIS IS NOT REGULAR WEAR AND TEAR IN MY OPINION.

I WAS TRAVELING NORTH ON THE HIGHWAY. I WAS GOING BETWEEN 50 AND 55 MPH WHEN THE TRAFFIC LIGHT TURNED TO YELLOW AND THEN TO RED. WHEN I APPLIED THE BREAKS NOTHING HAPPENED. MY VEHICLE ACTUALLY APPEARED TO SPEED UP. I RELEASED THE BRAKE THEN PUMPED THE BREAK TWICE THEN AGAIN APPLIED THE BREAK, THIS TIME STOMPING HARDER AND WITH BOTH FEET. MY VEHICLE DID NOT STOP OR EVEN SLOW. I WENT THROUGH THE LIGHT, RESULTING IN A CAR ACCIDENT. I T BONED ANOTHER CAR.

BRAKES FAILING, GETTING A C1391 CODE, LEAK IN ACCUMULATOR. TOYOTA HAS A WARRANTY ENHANCEMENT FOR THIS ISSUE ON THE 2010 MODEL BUT IT HAS NOT EXTENDED TO 2011 OR 2012 MODELS. I CONTACTED LOCAL DEALER AND NATIONAL REPRESENTATIVES AND WAS REFUSED ANY ASSISTANCE FROM TOYOTA. THIS ISSUE HAPPENED TWICE OVER THE LAST TWO DAYS, BOTH TIMES WHILE VEHICLE IN MOTION ON A CITY STREET. WARNING LIGHTS CAME ON AND ALMOST NO STOPPING POWER.

BRAKE ACTUATOR /MASTER BRAKE CYLINDER BROKEN, SAME ISSUE AS PREBIOUS MODELS OF THE PRIUS.

VARIOUS ALERTS LIGHTED, BRAKES, ABS, ANTI SKID. LOST SOME BRAKING... TOO SOFT AND FUNNY LIKE... NEEDED PUMPING. COST OF REPAIR TO REPLACE BRAKE PUMP SYSTEM INCLUDING THA ACTUATOR(BUSTER). BRAKE PADS FOR $3,700 +. AT TOYOTA CALESA IN PUERTO RICO.

ABS BRAKE IS NOT WORKING. WHILE I WAS DRIVING ON A CITY TRAFFIC AND COME TO A COMPLETE STOP AT THE TRAFFIC LIGHT, THE BRAKE PEDAL WENT DEEP WHEN I STEP ON IT AND IT TOOK ME MORE TIME TO STOP THAN I EXPECTED IT. I WENT AND GOT IT RED THE CODE C1391 ABNORMAL LEAK IN ACCUMULATOR.

THE BACK BRAKES AUTOMATICALLY RELEASE AT 5 MPH WHEN DECREASING SPEED AND ONLY WHEN ITS WET OUTSIDE. THE CAR IS NOW AT 365,000 MILES AND IT IS STILL DOING IT 6 YEARS LATER

A NUMBER OF LIGHTS CAME ON...ABS, ANTI SKID, SYSTEM FAILURE, ETC. THE BRAKES STARTED TO FEEL VERY FUNNY AND STARTED TO MAKE A STRANGE NOISE. TOOK IT TO TOYOTA AND THEY SAID IT WAS NOT SAFE TO DRIVE BECAUSE OF THE BRAKES. NEEDED THE BRAKE SYSTEM (ACTUATOR IS THE NAME I BELIEVE).

WHILE PULLING INTO A PARKING SPACE (SPEED LESS THAN 5 MPH) AND APPLYING THE BRAKES THE PEDAL WENT TO THE FLOOR AND THE CAR SEEMED TO SPEED UP. THE CAR JUMPED THE CURB AND STRUCK A TREE. A GOOD SAMARITAN ASSISTED AND ACTUALLY GOT IN THE CAR AND FOUND THE BRAKE PEDAL WENT TO THE FLOOR. SHORTLY AFTER THE ACCIDENT THE BRAKES RETURNED TO NORMAL OPERATION. THIS IS THE SECOND TIME THAT THE CAR HAS EXPERIENCED SIMILAR PROBLEMS. IN 2014 WHILE PULLING INTO THE DRIVEWAY THE BRAKE PEDAL WENT TO THE FLOOR AND STRUCK THE HOUSE. SHORTLY AFTER THE BRAKES RETURNED TO NORMAL OPERATIONS. TOYOTA WAS NOTIFIED AND INSPECTED THE CAR'S COMPUTER AND BRAKING SYSTEM PER CASE NUMBER 1410012557. AFTER THE INSPECTION TOYOTA SAID THAT THERE WERE NO BRAKE ISSUES FOUND WITH THE CAR AND STATED THAT IT WAS SAFE TO DRIVE. OBVIOUSLY THERE IS AN ISSUE WITH THE BRAKING SYSTEM IN THESE CARS.

THE BRAKE LIGHT, ABS LIGHT, TRACTION CONTROL LIGHT ALL CAME ON AT ONCE WHILE DRIVING NORMALLY. IT DID NOT AFFECT THE DRIVABILITY OF THE VEHICLE. I TOOK IT TO THE LOCAL TOYOTA DEALERSHIP TO DIAGNOSE THE PROBLEM. THE SERVICE SPECIALIST SAID THAT THIS IS A KNOWN PROBLEM WITH THESE CARS AND QUOTED A $2500 SERVICE PRICE TO REPLACE IT. IF IT IS THIS KNOWN AND THIS EXPENSIVE TO REPLACE THEN IT SHOULD BE INCLUDED IN A RECALL. THAT WOULD MAKE IT A DESIGN FLAW BY THE MANUFACTURER.

BRAKE ACTIVATOR UNIT FAILED AFTER 4 MONTHS OF REPORTING THE ISSUE TO TOYOTA. IT FOLLOWS THE CONDITIONS INDICATED ON TOYOTA WEN ZG1. VEHICLE WAS IN MOTION AT HIGHWAY SPEED WHEN BRAKING MALFUNCTION OCCURRED. VEHICLE WAS CONTROLLABLE AND ALLOW FOR SECURE STOP. BRAKE RESPONSE WAS SLUGGISH AND HARD ON THE FOOT.

WHILE DRIVING AT 45MPH VSC, PARKING BRAKE, AND ABS LIGHTS COMES ON AND STAYS ON AFTER RESEARCH IT SEEMS TO BE A FAIRLY COMMON ISSUE WITH THE 2012 PRIUS. STILL WAITING FOR TOYOTA TO DO SMETHING ABOUT IT

ON SUNDAY DECEMBER 17, 2017 AT ABOUT 3:00 PM I WAS DRIVING WITH MY FAMILY (WIFE AND TWO KIDS) IN SOUTH FLORIDA ON US HIGHWAY 1. THE WEATHER WAS CLEAR AND I WAS TRAVELING ABOUT 55 MPH. THEN WITHOUT ANY WARNING A NUMBER OF TROUBLE INDICATOR LIGHT ILLUMINATED ON THE DASH. WHEN THE LIGHTS CAME ON I WAS DRIVING IN A STRAIGHT LINE WITH JUST ENOUGH GAS PEDAL INPUT TO MAINTAIN MY 55 MPH SPEED. STARTLED BY THE LIGHTS I LIFTED MY FOOT OFF THE THROTTLE AND ATTEMPTED TO APPLY THE BRAKES. WHEN I ATTEMPTED TO APPLY THE BRAKE PEDAL I HAD LITTLE TO NO BRAKES AND I HAD TO 'STAND ON THE BRAKE PEDAL' (PRESS IT AS HARD AS I COULD) TO GET THE CAR TO SLOW AND EVENTUALLY STOP WHILE PULLING ONTO THE SHOULDER OF THE ROAD. I WAS SCARED AND SHOCKED AT THE SAME TIME. I TURNED THE CAR OFF AND BACK ON THINKING IT MIGHT FIX THE PROBLEM. IT DID NOT. I WAS ABLE TO GET THE CAR HOME AND THE VERY NEXT MORNING TOOK IT TO SOUTH DADE TOYOTA. I WAS ABLE TO GET IT HOME AND TO THE DEALER BY DRIVING VERY SLOW KEEPING A VERY LARGE SPACE CUSHION AND STANDING ON THE BRAKE PEDAL WHEN I NEEDED TO STOP. WHILE I DID NOT CRASH UNDERSTANDABLY I WAS SCARED BECAUSE YOU SHOULD NOT JUST LOSE BRAKES OUT OF THE BLUE. AT THE DEALER THEY INFORMED ME THAT THE BRAKE ACTUATOR FAILED AND NEEDED REPLACEMENT COSTING $5734.94. I DID RESEARCH AND FOUND THAT TOYOTA ISSUED A WARRANTY EXTENSION ZG1 FOR THIS EXACT PROBLEM BUT WAS TOLD BY THE DEALER THAT MY VIN WAS NOT PART OF THE PROGRAM EVEN THOUGH MY VEHICLE EXPERIENCED THE EXACT PROBLEM. I REACHED OUT TO TOYOTA COOPERATE AND WHILE THEY AGREED THAT YES I HAD THE SAME PROBLEM MY VIN WAS NOT PART OF THE PROGRAM (THEY GAVE ME A CASE # 1712180647). HOWEVER THEY DID OFFER $2207.57 AS A GOOD WILL GESTURE TOWARDS THE REPAIR. I PAID $3527.37. TOYOTA KNOWS OF A LIFE SAFETY PROBLEM AND HAS CHOSEN TO LIMIT THE PROGRAM. MY MILEAGE WAS 106,451 AND UNDER THE PROGRAM WOULD HAVE BEEN COVERED.

THE ABS, TRACTION CONTROL, AND BRAKE WARNING LIGHTS CAME ON. I TOOK THE VEHICLE TO MY LOCAL TOYOTA DEALERSHIP, WHERE I WAS TOLD THE DIAGNOSTIC HAS ALARM DTC C1391 AND THIS IS A MAJOR BRAKE HAZARD. THE DEALER STATE THE ABS BRAKE SYSTEM NEED TO BE REPLACED AT A COST OF $4,504.63 PLUS TAXES. I EXPLAINED TO THE DEALER THE CAR IS MAKING A SOUND LIKE THE ABS IS KICKING IN WHEN IT COME TO A STOP. THE NOISE PERSIST COMING IN AND OUT EVEN WHEN THE CAR IS PARKED AND OFF. MY 2012 PRIUS HAS ONLY 74K MILES. THE BRAKES PEDALS FEEL WEIRD AND LOOSE. I RED TOYOTA EXTENDED THE WARRANTY FOR THIS ISSUE DUE THE BRAKE ACTUATOR FAILURE DUE MANUFACTORY ISSUES. THE DEALER STATE MY VIN IS NOT THERE. WHAT ARE THEY WAITING TO FIX THIS ISSUE ON THE 2012 PRIUS??? WE NEED TO HAVE TOYOTA FIX THIS PROBLEM FOR ALL CARS BEFORE CATASTROFIC EVENT HAPPEN.

LOST FRONT BRAKES COMPLETELY DRIVING DOWN ROAD. I WAS ABLE TO SLOW CAR WITH MANUAL BRAKE ON SHIFTER IN CONJUNCTION WITH REAR BRAKES. A SERIOUS ISSUE.

WHEN BRAKING DURING NORMAL DRIVING CONDITIONS, A MIXTURE OF CITY AND HIGHWAY, THE CAR MAKES A SOUND LIKE THE ABS IS KICKING IN. WHEN COMING TO A STOP, THE NOISE PERSISTS UNTIL RELEASING THE BRAKE PEDAL. SHORTLY AFTER THIS STARTED, THE ABS, TRACTION CONTROL, AND BRAKE WARNING LIGHTS CAME ON. I TOOK THE VEHICLE TO MY LOCAL TOYOTA DEALERSHIP WHERE I WAS TOLD IT WAS THE BRAKE ACTUATOR NEEDED REPLACE AT THE COST OF $3600. MY 2012 PRIUS ONLY HAS 76K MILES ON IT.

NOVEMBER 4, 2017 - CAR WAS PARKED IN OUR DRIVEWAY. PUT THE CAR IN REVERSE TO BACK OUT OF OUR DRIVEWAY. THE BRAKES FAILED. NO MATTER HOW MANY TIMES THE BRAKE PEDAL WAS REPEATEDLY PUSHED DOWN, THE CAR JUST WOULD NOT STOP. IT ACTUALLY FELT LIKE THE CAR WAS ACCELERATING! THE CAR RAN OVER OUR MAILBOX AT THE END OF OUR DRIVEWAY. THE MAILBOX GOT DRAGGED UNDER THE CAR AND THE CAR ROLLED OUT ONTO THE STREET. FINALLY, WE PUSHED IN THE POWER BUTTON AND THAT WAS HOW WE WERE ABLE TO GET THE CAR TO STOP. OUR MAILBOX GOT TOTALED AND DAMAGE WAS DONE TO THE UNDERCARRIAGE OF OUR CAR, AS THERE IS TWISTED METAL HANGING DOWN SCRAPING THE GROUND. THE BRAKES STARTED TO WORK AGAIN A FEW MINUTES LATER, AS I WAS ABLE TO PULL IT BACK INTO THE DRIVEWAY OFF OF THE STREET. ON SEPTEMBER 19, 2017 ' CAR WAS PARKED IN A PARKING LOT. WHEN REVERSING OUT OF THE PARKING SPACE, THE BRAKES DID NOT WORK. AFTER REPEATEDLY PUMPING THE BRAKES, THEY FINALLY ENGAGED JUST BEFORE IT HIT A CAR PARKED BEHIND US. WE THOUGHT THIS WAS A FREAK ONE-TYPE EVENT, SO WE DIDN'T REPORT IT.

SINCE I FIRST BOUGHT THE CAR IN 2012 I NOTICED THAT EVERY NOW AND THEN WHEN I PUSHED DOWN THE BRAKE PEDAL TO SLOW DOWN FOR A STOP, IF THE CAR HIT A SLIGHT BUMP IN THE ROAD, THE CAR WOULD MOMENTARILY ACCELERATE INSTEAD OF BRAKING. IT FELT LIKE I WAS LOSING CONTROL OF THE CAR. (NOTE: SINCE I DID NOT RECORD THE DATES, PLEASE NOTE THAT I HAVE CHOSEN AUGUST 1, 2017 AS A RANDOM DATE JUST SO I COULD CONTINUE ON TO THE NEXT STEP BUT THIS HAS HAPPENED FROM TIME TO TIME SINCE 2012.)

WHILE DRIVING THE VEHICLE ON A DRY SURFACE STREET, THE "CHECK HYBRID SYSTEM" LIGHT ILLUMINATED. THE BRAKE PEDAL FELT LIKE I HAD TO APPLY MORE PRESSURE TO STOP AND IT SEEMED TO TRAVEL FURTHER TOWARD THE FLOORBOARD THAN NORMAL.

FOR SOME TIME I HAVE NOTICED THAT WHEN BRAKING, IF MY CAR HIT A BUMP, THE BRAKES WOULD DISENGAGE FOR A SECOND OR TWO EVEN IF THE BRAKE PEDAL WAS FULLY PRESSED, AND THE CAR WOULD LURCH FORWARD UNTIL THE BRAKES REENGAGED. IT WAS A SIMILAR SENSATION TO HYDROPLANING, EVEN THOUGH IT WOULD OCCUR ON A DRY ROAD. THE ANTILOCK BRAKING SYSTEM LIGHT WOULD BE ON WHILE THE BRAKES WERE OUT, AND I AM TOLD THAT THE BRAKE LIGHTS ON THE BACK OF MY CAR ALSO WERE ON, BUT NO BRAKE FUNCTION FOR A SECOND OR TWO. A FEW DAYS AGO I WAS BRAKING AT A STOPLIGHT IN NORMAL WEATHER CONDITIONS AND THE BRAKES DID NOT WORK AT ALL. I HAD TO STOP THE CAR USING THE EMERGENCY BRAKE. THE MECHANIC HAS BEEN UNABLE TO FIND ANYTHING WRONG WITH THE CAR. MY CAR ONLY HAS 30K MILES ON IT AND HAS BEEN WELL-MAINTAINED.

WHEN DRIVING ON UNEVEN GROUND, LIKE POT HOLES, THE BRAKES FAIL. LITERALLY IF YOU HAVE YOUR FOOT ON BRAKE WHEN DRIVING OVER A POT HOLE, YOU CAN FEEL THE BRAKES RELEASE AND THE CAR WON'T STOP. I'VE HAD SIMILAR ISSUES ON BUMPY GROUND. THE CAR HAS ALWAYS HAD THE PROBLEM SINCE I PURCHASED IT, PROBABLY ON A WEEKLY BASIS, AND I'VE WONDERED ABOUT THE SAFETY AND WHETHER IT'S JUST RELATED TO ABS. I'VE ALSO INQUIRED AT THE DEALERSHIP. LUCKILY, I'VE NEVER BEEN IN AN ACCIDENT BECAUSE OF THE PROBLEM. BUT, THIS WEEKEND MY FRIEND WITH A PRIUS HAD AN ACCIDENT BECAUSE OF THE PROBLEM, SO I DECIDED TO REPORT MY COMPLAINT.

MY 2012 TOYOTA PRIUS V (MILEAGE: 55155) HAS HAD A FAILURE OF THE REAR BRAKE PADS AND ROTORS DUE TO EXCESSIVE RUSTING. PLEASE NOTE THE FRONT BRAKES ARE IN GREAT SHAPE AND SHOW VERY LITTLE WEAR. THE SERVICE MANAGER WAS QUICK TO POINT OUT THAT HE WAS ONLY A FRANCHISE STORE AND WAS NOT RESPONSIBLE FOR THE DESIGN OF THE REAR BRAKES. HE STATED THAT THIS HAPPENS OCCASIONALLY ON THE HYBRID CARS THEY SERVICE AND IF THE MANUFACTURER HAD COATED THE BRAKE (I BELIEVE HE WAS REFERRING TO THE SLIDE AREA OF THE CALIPER WHERE THE BRAKE PADS RIDES) THAT THE BRAKE PAD WOULD NOT HAVE HUNG UP AND WORN OUT ALONG WITH DESTROYING THE ROTORS. I AM A FORMER LICENSED AIRCRAFT MECHANIC AND A LICENSED ENGINEER WITH THE STATE OF ILLINOIS. CLEARLY THERE IS NO REASON FOR THE REAR BRAKES TO FAIL BEFORE THE FRONT BRAKES AND CERTAINLY NOT THE ROTORS. THIS CAR HAS BEEN SERVICED BY THE DEALER EVERY 5000 MILES, WHICH DEMONSTRATES THE FAILURE WAS NOT DUE TO NEGLECT. THIS FAILURE MECHANISM NEEDS TO BE ADDRESSED BEFORE IT CAUSES AN ACCIDENT.

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. WHILE ATTEMPTING TO ACCELERATE FROM A STOP, THE VEHICLE HESITATED PRIOR TO ACCELERATING. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE BRAKE ACTUATOR NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 63,000.

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. WHILE DRIVING 20 MPH, THE BRAKE PEDAL WAS DEPRESSED, BUT FAILED TO ENGAGE. AS A RESULT, THE CONTACT'S VEHICLE CRASHED INTO THE REAR OF ANOTHER VEHICLE. THE AIR BAGS FAILED TO DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE CONTACT WAS ABLE TO DRIVE THE VEHICLE AWAY FROM THE CRASH SCENE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE CONTACT STATED THAT THE FAILURE RECURRED INTERMITTENTLY. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 135,000.

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. WHILE DEPRESSING THE BRAKE PEDAL, IT MADE AN ABNORMAL NOISE. THE DEALER DIAGNOSED THAT THE BRAKE ACTUATOR WAS FAULTY AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN WAS INVALID. THE FAILURE MILEAGE WAS 46,000.

BRAKES SOMETIMES GRAB VERY SHARPLY WHEN TOUCHED WHILE IN MOTION, CAUSING FORWARD MOMENTUM OF BODY TO SLAM ON BRAKES. ALMOST CAUSED ACCIDENT WHEN I TOUCHED BRAKES WITH SOMEONE TAILGATING TOO CLOSELY. ALSO TRACTION IS INTERRUPTED WHEN HITTING THE METAL ABUTMENT TO BRIDGES.

"TAKATA REPORT" COMUNICATION CIRCUIT MALFUNCTION C 1203 ECM - BRAKE BOOSTER W/MASTER, DURING OPERATION ALL INDICATOR LIGHTS AT THE DASH WENT ON PERMANENTLY.

BRAKES ARE VERY SENSITIVE DURING WET WEATHER. IT TAKES GREAT EFFORT TO AVOID A SKID. ONCE THE BRAKES WARM UP THE PERFORMANCE IS NORMAL. THE DEALER RESURFACED THE FRONT ROTORS WHICH FIXED THE PROBLEM IN THE SHORT TERM. HOWEVER, THE PROBLEM IS RETURNING.

VEHICLE HAD LITTLE OR NO BRAKING POWER IN A PANIC STOP SITUATION. THIS WAS LIKELY CAUSE BY A DELAY SWITCHING FROM REGENERATIVE BRAKING TO MECHANICAL BRAKES.

BRAKES RELEASE AND CAR ACCELERATES WHEN BRAKING OVER POTHOLES OR UNEVEN PAVEMENT AT LOW SPEEDS. *TR

TOOK CAR IN FOR SERVICE AT 40,251. WAS TOLD BRAKE PADS ARE AT 1MM FOR BOTH REAR BRAKE PADS, AND THAT ROTORS WERE RUSTED. TOLD FOR SAFETY IT SHOULD BE REPLACED AT THIS TIME. THERE HAD BEEN NO INDICATION THAT BRAKES WERE FAULTY. NO WARNING LIGHTS, NO NOISE, NO CHANGE IN BRAKING SENSATION. PRIOR SERVICE AT 35,397 INDICATES BRAKES IN GOOD CONDITION WITH BOTH REAR PADS AT 7MM. ALSO, NO MENTION OF ROTOR RUST. SERVICE DONE AT 30,109 ALSO INDICATES BRAKES IN GOOD CONDITION WITH REAR PADS AT 7MM. MULTIPOINT INSPECTION PAPER FOR 40K SERVICE WAS NOT ATTACHED TO BILL. REQUESTED INSPECTION PAPER FOR 40,251 SERVICE, AND ALL OTHER INSPECTION PAPERS. CAR WAS BOUGHT AT WARREN OHIO TOYOTA, AND WAS ALWAYS TAKEN THERE FOR SERVICE. WAS TOLD NO INSPECTION PAPERS ARE KEPT LONGER THAN 6 MONTHS, AND THEY COULD NOT PROVIDE ANY INFORMATION ABOUT THIS CARS PREVIOUS INSPECTIONS RESULTS. THE MOST RECENT INSPECTION PAPER WAS MAILED TO ME. IT INDICATES THE REAR BRAKE PADS WERE AT 0MM AND 1MM. A 0MM PAD. THERE WAS NOTHING THAT OCCURRED DURING DRIVING TO INDICATE THE PAD WAS DOWN TO METAL. I HAVE CONTACTED THE WARREN OHIO TOYOTA GENERAL MANAGER AND SERVICE MANAGER WITH MY CONCERNS OVER THIS RAPID DECLINE IN THE BRAKING SYSTEM WITH NO WARNING IN LESS THAN 5,000 MILES OF DRIVING. MOST OF THE DRIVING I DO WEEKLY IS HIGHWAY MILES. I HAVE NOT RECEIVED ANY RESPONSE FROM THE GENERAL MANAGER OR SERVICE MANGER DESPITE REPEATED CALLS AND EMAILS. THIS RAPID DECLINE IN MY BRAKING SYSTEM WITH NO WARNING IS A SERIOUS SAFETY CONCERN. EITHER MY 2012 PRIUS V HAS A FAULTY BRAKING SYSTEM, OR THE BRAKES WERE FINE AND TOYOTA OF WARREN OHIO LIED ABOUT THE CONDITION OF THE BRAKES. *TR

I WAS DRIVING ON I-45 AT 55 OR 60 MPH AND THE BRAKE PEDAL WENT TO THE FLOOR. IT IS STILL THAT WAY, BRAKE FLUID LEVEL IS OK. TOYOTACARE PLAN IS EXPIRED. IS THERE A RECALL FOR THESE VEHICLES? THANKS *TR

THERE ARE TWO THINGS THAT OCCUR WITH MY BRAKES. ONE IS A CONSISTENT AND VERY LOUD GROAN WITH BRAKING AFTER ANY LENGTH OF TIME SITTING IDLE. THE OTHER IS WHEN THE BRAKES ARE APPLIED AND I MAY BE OVER A BUMP IN THE ROAD OR A POT HOLE OR ROCKS THE CAR LURCHES FORWARD QUICKLY AS IF I HAVE LOST CONTROL OF BREAKING. ALMOST LIKE HYDROPLANING WITHOUT WATER PRESENT. I HAVE TAKING THE CAR TO THE DEAL CONSISTENTLY SINCE THE NOISE BEGAN AND YET TO HAVE A FIX FOR IT. THEY SAY THERE IS NOTHING WRONG WITH THE BRAKES. HOWEVER I SPECIFICALLY HAD SOMEONE SIT IN MY CAR TO HEAR THE GROAN BECAUSE THEY SAID THEY WERE UNABLE TO DUPLICATE IT. THEY HEARD THE NOISE AND AGAIN COULD DO NOTHING TO MAKE IT STOP. *TR

BRAKING OFTEN BECOMES EXTREMELY AGGRESSIVE WHEN MOISTURE IS PREVALENT. INITIAL APPLICATION IS NORMAL, UNTIL DEEPER INTO THE BRAKING CYCLE. ONCE VEHICLE IS COMMITTED TO STOPPING AN ADDITIONAL (HARD BRAKE) SURGE THEN RENDERS SYSTEM INTO BECOMING FAR TOO AGGRESSIVE. THIS IS UNDER NORMAL BRAKING SCENARIOS REQUIRING ACTIVE OPERATOR ADJUSTMENTS TO STOP NORMALLY. *TR

ON MULTIPLE OCCASIONS WHEN BRAKING IF I HIT A BUMP IN THE ROAD OR POTHOLE THE CARS SPEEDS FORWARD FOR A FEW FEET. IT FEELS LIKE THE BRAKES RELEASE CAUSING THE CAR TO STOP SLOWING DOWN. THIS IS VERY DISCOMFORTING. SO FAR I HAVE NOT BEEN IN ANY ACCIDENT THOUGH I FEAR THAT THIS COULD CONTRIBUTE TO AN ACCIDENT IF I HAD TO STOP SUDDENLY. *TR

I STATED TO THE DEALERSHIP ON JUNE24,2013 THAT THE CAR FEELS LIKE IT RUNAWAY WHEN I BRAKE AND HIT A POTHOLE IN THE ROAD. THEY ROAD TESTED MY CAR AND COULDN'T DUPLICATE ANY ABNORMAL ISSUES WITH THE BRAKING. THEY VISUALLY INSPECTED THE BRAKES AND THEY FOUND NOTHING. THERE HAVE BEEN INCIDENTS WHERE I BRAKE AND HIT A POTHOLE AND JUT FORWARD EITHER ALMOST PASSING A RED LIGHT OR ALMOST HITTING A CAR IN FRONT OF ME. IT IS A VERY SCARY SITUATION. I WOULD HAVE DONE THIS COMPLAINT SOONER,BUT I WAS NOT AWARE OF THIS WEBSITE. I JUST HAPPEN TO SEARCH TO SEE IF ANYONE ELSE HAS THE SAME ISSUE WITH THEIR 2012 PRIUS V. THIS SCARY DANGEROUS SITUATION STILL CONTINUES TILL THIS DAY. *TR

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. THE CONTACT STATED THAT WHILE TRAVELING AT VARIOUS SPEEDS, THE VEHICLE FAILED TO RESPOND TO DECELERATION ATTEMPTS. THE CONTACT MENTIONED THAT THE FAILURE WAS EXPERIENCED MULTIPLE TIMES. THE VEHICLE WAS TAKEN TO THE DEALER WHO WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 5,000.

BRAKES ARE EXTREMELY TOUCHY AND GRAB WHENEVER IT IS DAMP OUTSIDE. *JS

I WAS TRAVELING ABOUT 20 MILES AN HOUR DURING TRAFFIC HOUR WHEN I SAW THE CAR STOPPED IN FRONT OF ME. I HAD AT LEAST 4 CAR DISTANCE WHEN I APPLIED BRAKES. NORMALLY, I CAN FEEL THE SEAT BELT TIGHTEN, CARS JERKING OR SHAKE DUE TO ANTI-LOCK BRAKE WHEN YOU STEP ON THE BRAKE HARD. BUT THIS TIME, I DID NOT FEEL THE CAR SLOW DOWN WHEN I STEPPED ON BRAKE ALL THE WAY DOWN, IT CONTINUE TO CRUISE A LITTLE BEFORE IT SLOW DOWN, BUT BY THEN, I HAVE ALREADY HIT THE CAR IN FRONT OF ME. THIS CAR WAS SERVICED REGULARLY, DURING MY LAST VISIT 3 WEEKS AGO, I WAS NOTIFIED THAT MY CAR IS ON THE RECALL LIST FOR SOFTWARE UPDATE. *TR

WHEN STEPPING ON THE BRAKES DURING WEST WEATHER (MOISTURE IN THE BRAKES) THE REAR WHEELS LOCK UP FOR A SPLIT SECOND EVERY TIME. WHEN IT IS DRY IT DOESN'T LOCK UP BUT STILL HITS HARD.

I HAVE OWNED A TOYOTA PRIUS 2012 SINCE FEBRUARY 2012 AND HAVE HAD MULTIPLE ISSUES WITH THE BRAKING SYSTEM. I HAVE NOTICED THAT IF DRIVING OVER A DEPRESSION IN THE ROAD (E.G. POT HOLE OR MAN HOLE COVER) WHILE DEPRESSING THE BRAKE THE VEHICLE ACCELERATES. IT SEEMS THAT THE VEHICLES BRAKE SYSTEM RELEASES AND YOU HAVE TO REAPPLY THE BRAKES. I HAVE HAD THE VEHICLE INSPECTED BY THE DEALER 2 TIMES AND THEY HAVE BEEN UNABLE TO IDENTIFY THE PROBLEM. I HAVE NOTICE VARIOUS OTHER COMPLAINS ON THIS WEBSITE AND WANTED TO ADD MY EXPERIENCE. HOPEFULLY THIS WILL EVENTUALLY LEAD TO THE GOVERNMENT FORCING TOYOTA TO RECALL 2012 PRIUS MODELS BEFORE SOMEONE IS SERIOUSLY HURT. *TR

I BEGAN EXPERIENCING WHAT I DESCRIBED TO THE DEALER AS A "HICCUP" IN MY BRAKES. I COMPLAINED OF THIS PROBLEM THE TWO TIMES I TOOK THE CAR IN FOR ROUTINE MAINTENANCE (FIRST AND NEXT SIX MONTHS), AND EACH TIME THEY FOUND "NO PROBLEM" WITH THE BRAKES. IT WAS NOT UNTIL THIS SNOWY ROUGH WINTER WITH ALL THE ATTENDANT POT HOLES IN THE STREET THAT I CORRELATED THIS BRAKING PROBLEM WITH UNEVEN PAVEMENT. I KNOW THIS HAPPENS WHEN MY RIGHT FRONT TIRE HITS A POT HOLE, AND IT MAY HAPPEN WHEN ANY TIRE DOES, BUT IF I'M APPLY THE BRAKES - ESPECIALLY HITTING THE BRAKES AT THE MOMENT ONE TIRE DIPS INTO THE HOLE -THEY DO NOT ENGAGE AND IN FACT THERE'S A SLIGHT LURCH FORWARD, ALMOST AN ACCELERATION. THE CAR IS GOING TO THE SERVICE DEPARTMENT TOMORROW WITH THE HOPES THAT THE PROBLEM CAN BE LOCATED. THIS TRULY FEELS DANGEROUS TO DRIVE. *TR

THE BRAKE DOEN'T WORK WHEN I WAS DRIVING OUT OF THE HIGHWAY. I PRESSED HARD OF THE BRAKE AND CANNOT STOP THE CAR. AND I CRUSHED INTO A BIG TRUCK. THE CAR CRUSHED ONCE WITH THE TRUCK AND THE MOMENTUM MADE THE CAR TO HIT THE TRAFFIC LIGHT POLE AGAIN. TERRIBLE. *TR

I WAS IN STOP-AND-GO TRAFFIC. I HAD ACCELERATED TO ABOUT 25 MPH WHEN I NEEDED TO SLOW DOWN, I STEPPED ON THE BRAKE AND AT ABOUT THE SAME TIME HIT A BUMP IN THE ROAD. THE CAR NOT ONLY WAS NOT BRAKING (I WAS STEPPING ON THE BRAKE AT THE TIME) BUT INDEED SEEMED TO ACCELERATE BRIEFLY BEFORE THE BRAKES RE-ENGAGED (I HAD MY FOOT ON THE BRAKE--DEPRESSING IT--THE ENTIRE TIME). THIS HAS HAPPENED FROM TIME TO TIME WITH MY VEHICLE--IT HAS HAPPENED WHEN BACKING OUT OF MY GARAGE, AND ALSO WHEN BREAKING WHILE DRIVING OVER ROAD BUMPS OR POTHOLES. THIS IS A SAFETY HAZARD THAT NEEDS TO BE ADDRESSED. *TR

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. THE CONTACT MENTIONED THAT WHILE DRIVING 35 MPH, THE BRAKES FAILED TO RESPOND. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 4,600 AND THE CURRENT MILEAGE WAS 4,900....UPDATED 11-01-13 *BF

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 25 MPH AND MAKING A TURN, THE BRAKES FAILED TO RESPOND UPON ENGAGEMENT. THE VEHICLE CAME TO A STOP AFTER THE CONTACT APPLIED THE BRAKES SEVERAL TIMES. THE VEHICLE THEN RESUMED WITHOUT THE BRAKE MALFUNCTION. THE VEHICLE HAD NOT BEEN DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 12,000. THE VIN WAS NOT AVAILABLE.

BRAKE NOISE WHEN PULLING FORWARD IN AM . DEALER SAID FIX IS COMING FOR MONTHS, SERVICE BULLETIN NEVER CAME OUT. WORRIED THAT MAY LEAD TO BRAKE FAILURE. *TR

I WAS EXITING THE PARK AND MY TOYOTA PRIUS' BRAKES FAILED, CAREENING ME ONTO A MAJOR THOROUGHFARE (SOUTH ORANGE AVENUE) ON A HILL, WHILE MY CAR BEGAN ACCELERATING. I HIT THE PARK BUTTON AND MY CAR SLOWED UNTIL I WAS ABLE TO GET CONTROL AGAIN AND TURN UP A HILL TO A STOP. WHEN I TURNED MY CAR OFF AND ON AGAIN, THE BRAKES WERE FUNCTIONING NORMALLY. *TR

MY 2012 PRIUS V HAS BEEN MAKING A GROINING, HOWLING NOISE SINCE I PURCHASED IT. NOISE COMES FROM FRONT AND REAR BRAKES. HAS TAKEN THE CAR FOR REPAIRS BUT THEY HAVE NOT BEEN ABLE TO FIX IT. IT IS VERY ANNOYING AND CAN BE VERY LOUD. PEOPLE INSIDE AND OUTSIDE THE CAR CAN HEAR IT, SO ITS QUITE EMBARRASING. NOISE COMES AND GOES ITS NOT CONSTANT. TOYOTA SAYS THEY ARE AWARE OF THE PROBLEM BUT HAVE NO REPAIRS AT THIS TIME. I DRIVE MY FAMILY IN THIS CAR AND ITS SCARY TO KNOW THERE IS AN ABNORMALITY WITH THE BRAKES. BEWARE THE DEALER WILL TELL YOU TO FOLLOW THROUGH WITH A THIRD PARTY ARBITRATION SERVICE. I DID AND MY CASE WAS DENIED. *TR

BRAKE IS HAVING GROANING/ GRINDING/OWL HOOTING SOUNDS. THE GRINDING SOUND APPEARS WHEN YOU APPLIED THE BRAKE, AND WHEN THE CAR ALMOST AT COMPLETE STOP, IS THE WORST. GROANING AND OWL HOOTING SOUND ARE ALWAYS THERE, SPECIALLY IN THE MORNING. IN THE AFTERNOON IS NOT AS LOUD AS IN THE MORNING, BUT STILL NOTICEABLE. BEEN TO TOYOTA DEALER AND THEY INSPECTED THE BRAKE AND SAID THERE IS NOTHING WRONG. ALSO SAYING THAT THE SOUND IS NORMAL FOR A REGENERATE BRAKE SYSTEM. BUT I DON'T AGREED TO IT. TOYOTA NEED TO FIND A FIX FOR IT, AND WE DON'T KNOW IS THE BRAKE REALLY SAFE! *TR

SLOWED FOR RED LIGHT THAT WAS VISIBLE FOR A GREAT DISTANCE SO COASTING AND APPLIED BRAKES AND THEY WEREN'T THERE....I HIT THE CAR IN FRONT OF ME, HE HIT THE CAR IN FRONT OF HIM....MOSTLY DINGS IN FENDERS....MY HOOD WAS UP ON ONE SIDE, AND FRONT PANEL MOVED....NOBODY WAS HURT POLICE CAME AND SAT IN THE CAR AND APPLIED BRAKE AND IT WENT TO THE FLOOR. HE SAID "YOU HAVE NO BRAKES; DO NOT DRIVE THE CAR, HAVE IT TOWED". *TR

WHEN YOU START TO DRIVE IT MAKES A LOUD HOWLING SOUND, IT IS GETTING LOUDER AS TIME GOES ON. PEOPLE LOOK AT US LIKE WE ARE CRAZY FOR DRIVING WITH BAD BRAKES. WE HAVE HAD IT IN TO THE DEALER MANY TIMES TO JUST BE TOLD IT IS THE WAY IT IS. NO REPAIR IS NECESSARY. IT IS GETTING MORE AND MORE ANNOYING TO LISTEN TO. IT LASTS LONGER AS TIME GOES ON. COME ON TOYOTA LETS GET THIS TAKEN CARE OF BEFORE THERE IS A FATAL COLLISION DUE TO THIS! IT IS GETTING SCARY TO DRIVE AND FEEL SAFE. *TR

LOUD SCRAPING NOISE COMING FROM REAR OF CAR---HAD THE CAR IN TO TOYOTA 5 TIMES. THE NOISE CONTINUES TO GET LOUDER AS TIME PASSES.-- ITS NOW LOUD ENOUGH TO DROWN OUT THE RADIO.--TOYOTA SERVICE SAYS IT IS JUST RUST ON THE ROTORS.--THIS IS THE 4TH NEW TOYOTA I HAVE OWNED,-- BUT THIS THE ONLY ONE I HAVE HA D THIS PROBLEM WITH.-- WHICH LEADS ME TO BELIEVE THAT THERE IS A FIX FOR THIS PROBLEM.--II WAS TOLD BY THE SERVICE MANAGER THAT TOYOTA KNOWS OF THIS PROBLEM AND ARE WORKING A RECALL TO FIX IT.---SO WHERE IS THE RECALL?????? *TR

PURCHASED PRIUS V IN MARCH 2012, JUNE 2012 TOOK VEHICLE IN FOR SERVICE AND TO HAVE DEALER LOOK INTO NOISE COMING FROM REAR BRAKES. DEALER STATED THEY COULD NOT HEAR THE NOISE AND SAW NOTHING UPON INSPECTION. NOISE BECAME MORE FREQUENT AND LOUDER, TOOK VEHICLE BACK TO DEALER AND THEY COULD HEAR THE NOISE. UPON INSPECTING THE REAR BRAKES THEY FOUND REAR ROTORS HAD ABNORMAL MARKINGS IN THEM FROM IMPROPER MACHINING. BRAKE PAD FRICTION MATERIAL GLAZED. ROTORS AND PADS REPLACED. AFTER A WEEK THE NOISE RETURNED. TOOK VEHICLE BACK TO DEALER AND WAS TOLD THIS WAS A PROBLEM WHICH TOYOTA HAS BEEN EXPERIENCING FOR MONTHS BUT HAS FOUND NO SOLUTION TOO. WAS TOLD I WOULD BE INFORMED WHEN A SOLUTION WAS FOUND AND I COULD BRING THE VEHICLE BACK THEN. I FEEL THIS IS A SAFETY CONCERN WHICH NEEDS TO BE LOOKED INTO. *TR

1. WHEN VEHICLE TRANSITIONED FROM BATTERY TO MOTOR, SIGNIFICANT IMPACT RESULTED 2. BRAKE PEDAL TRAVELED TO FLOOR, DASH WARNING LIGHT CAME ON [VEHICLE TOWED] 3. ATTEMPTING TO LEAVE DEALERS LOT, BRAKE PEDAL TRAVELED TO FLOOR. TECHNICIAN WITNESSED. *TR UPDATED 01/15/13

MY PRIUS V FIVE WAS PURCHASED IN AUGUST 2012. LOCATION OF THE CAR IS NW OF WA STATE WHERE TEMPERATURES ARE CURRENTLY IN THE MID 50S (AND BELOW) WITH HIGH LEVEL OF HUMIDITY. SINCE THE BEGINNING OF OCTOBER 2012, I'M EXPERIENCING A NOISE THAT WOULD BEST BE DESCRIBED AS AN "OWL HOOTING." MY PROBLEM IS ESPECIALLY NOTICEABLE AFTER THE CAR HAS PARKED FOR AN EXTENDED AMOUNT OF TIME (EG. IN THE GARAGE OVERNIGHT). SOMETIMES, MERELY PARKING FOR 10 MINUTES ON THE SCHOOL'S PARKING LOT IS ENOUGH TO MAKE THE NOISE APPEAR AGAIN. THE "HOOTING" DEFINITELY "OSCILLATES" WITH THE ROTATION OF THE TIRE AND EMANATES FROM MY REAR RIGHT SIDE, BUT IS ESPECIALLY LOUD WHEN MAKING LEFT TURNS. THE NOISE DISAPPEARS AFTER DRIVING A FEW HUNDRED YARDS, BUT IS LOUD ENOUGH TO TURN HEADS. I'M ABLE TO REPRODUCE THIS PROBLEM EVERY SINGLE MORNING SINCE OCTOBER 2012. THE SERVICE TECHS WERE ABLE TO CONFIRM THE NOISE, BUT COULDN'T REPAIR THE DEFECT. INSTEAD, AN OPEN CASE/TICKET WAS SUBMITTED TO TOYOTA'S HEADQUARTER. *TR

THE VEHICLE EMITS A REPETITIVE 'WOO......WOO.....' THAT VARIES WITH SPEED/WHEEL REVOLUTION (SOMETHING RUBBING DURING EACH REVOLUTION). TO THE BEST OF MY ABILITY TO TELL, IT SOUNDS LIKE THE GROAN IS COMING FROM THE REAR-PASSENGER SIDE. THE SOUND IS USUALLY PRESENT AFTER THE CAR HAS SAT OVERNIGHT OR AFTER PROLONGED PARKING AND LAST FOR 100-300 FEET OF DRIVING. I'VE EVEN HEARD IT AFTER FOUR HOURS OF BEING PARKED AT WORK. IT WILL TYPICALLY MAKE THIS SOUND FOR A FEW DAYS AFTER A RAIN EVENT. THE SOUND HAS OCCURRED IN BOTH FORWARD AND REVERSE AND WITH THE EMERGENCY BRAKE ON OR OFF PRIOR TO DEPARTURE. I PURCHASED THE VEHICLE IN APRIL AND HAVE HEARD IT ALL THE WAY TO THE PRESENT. DURING A TIRE REPLACEMENT I MADE NOTE OF THE ISSUE TO THE DEALER, WHO ATTRIBUTED IT TO ROTOR OXIDATION. I RESPONDED THAT I'VE HEARD THE GRIND/GROAN OF RUST BEING WORN OFF THE ROTOR WHEN FIRST APPLY THE BRAKES, AND THIS IS NOT THAT SOUND. I WENT IN WITH A RECORDING ON MY PHONE AND THE TECHNICIAN AGREED IT WASN'T RUST. THEY REPAIRED THE TIRE AND TRIED TO REPRODUCE THE CONDITION WITHOUT SUCCESS. THEY DID TEAR DOWN THE BRAKE AND FOUND NOTHING OUT OF THE ORDINARY. THE FACT THAT THIS ISSUE PERSISTS ON MULTIPLE VEHICLES OF THIS MODEL IS INDICATIVE OF A MANUFACTURER'S DEFECT THAT SHOULD BE ADDRESSED. *TR

TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. THE CONTACT STATED THAT WHILE DEPRESSING THE BRAKE PEDAL, THE BRAKES LOCKED UP. THE CONTACT CONTINUED TO DEPRESS THE BRAKE PEDAL AND SHUT THE VEHICLE ON AND OFF BY PUSHING THE START BUTTON. THE FAILURE OCCURS INTERMITTENTLY. THE CONTACT ALSO NOTICED THE BRAKE PEDAL DROPS TO THE FLOOR BOARD ABOUT A HALF INCH WHEN STARTING THE VEHICLE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND A COMPLAINT WAS FILED. THE VEHICLE WAS TAKEN TO THE DEALER WHO WAS UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 3,000.

AS I WAS APPROACHING A TURN I BEGAN TO BRAKE AND THE BRAKES FAILED. I TRIED PRESSING THE BRAKE PEDAL HARDER AND MAKING SURE THAT I HAD PROPER FOOT PLACEMENT AND IT FELT LIKE THE CAR ACCELERATED AT THAT POINT. SINCE THE CAR WAS NOT SLOWING DOWN I WAS UNABLE TO MAKE THE TURN AND ENDED UP CROSSING THE ROAD DIAGONALLY AND GOING UP ONTO THE CURB. ONCE THE CAR WAS OVER THE CURB AND IN THE GRASS THE BRAKES FINALLY ENGAGED AND THE VEHICLE CAME TO A STOP. *JS

SUNDAY DEC. 11TH: PULLING OUT OF CHICAGO GARAGE, CAR MAKES ODD ROTATIONAL NOISE. THE SOUND SEEMS TO GO AWAY AFTER ABOUT A BLOCK OR SO OF DRIVING. THE DEALERSHIP IS CLOSED AND I AM BOOKED UP WITH CLIENTS, SO I CONTINUE TO TEST AND SEE IF TEMPERATURE OR ENVIRONMENT EFFECT THE NOISE. THE NOISE APPEARS TO ONLY HAPPEN ON A 'COLD START' BUT ALL OTHER FACTORS DO NOT SEEM TO SHOW AN IMPRESSIVE CHANGE. DEC. 15TH: I CALL TOYOTA CORPORATE AND FILE A COMPLAINT, THEN PER THEIR DIRECTION, CALL THE DEALER AND MAKE AN APPOINTMENT TO HAVE THE NOISE PROBLEM FIXED. JAN. 13TH: AFTER SEVERAL CALLS TO CORPORATE, AND HAVING TAKEN THE CAR IN THREE TIMES TO THE DEALERSHIP (MIDTOWN TOYOTA- CHICAGO), I HAVE BEEN INFORMED BY ONE OF THE SERVICE EMPLOYEES THAT TOYOTA IS HAVING A PROBLEM WITH MANY OF THESE MODELS. THEY THINK IT IS A BACK BRAKE ISSUE, PERHAPS DEFECTIVE PART(S). AS BOTH TOYOTA & THE DEALERSHIP ARE NOT OFFICIALLY TELLING ME THIS. THIS IS WHAT I KNOW, THEY HAVE BEEN LYING TO ME AS A CONSUMER AND ME AND OTHER CUSTOMERS ARE DRIVING A CAR WITH A POTENTIAL SAFETY PROBLEM. I DO NOT FEEL SAFE DRIVING THIS CAR.