2025 Honda Odyssey Electrical Problems

Your Odyssey's automatic engine shutoff feature (Auto Idle Stop) occasionally fails to restart the engine when you release the brake pedal in traffic, leaving your vehicle unresponsive until you shift to Park and manually restart it. A dashboard warning message appears but is too brief to read. This problem has happened multiple times even after a dealer replaced your battery at 15,000 miles, creating a safety concern since you can't move the vehicle when traffic is active.

Your car's Auto Idle Stop system isn't working properly — when you come to a complete stop, the engine doesn't restart on its own like it should. Instead, you get an error message and have to manually restart the engine, which has happened at stoplights and in busy intersections, creating a safety risk. The fix will likely involve diagnosing the Auto Idle Stop system's sensors, battery, and starter components to determine what's preventing automatic restart.

Your 2025 Honda Odyssey's auto start-stop feature has caused the engine to shut off completely twice when you tried to accelerate from a red light in busy intersections. When this happened, dashboard warning lights and error messages appeared, but you weren't able to read them while restarting the car in traffic. This creates a serious safety risk since other drivers may not have time to avoid your stopped vehicle. The dealer will need to diagnose the auto start-stop system and engine control software to prevent this from happening again.

Your car's idle stop feature (which automatically shuts off the engine at red lights to save fuel) sometimes fails to restart the engine on its own. When this happens, you have to manually turn the car off and back on again, which takes time and can be stressful when traffic is backed up behind you. The issue appears to be with the automatic restart function of the idle stop system, which may require a software update or inspection of the starter and battery connections.

Your 2025 Honda Odyssey has stalled multiple times while stopping, and when you try to accelerate after the stall, the car malfunctions. You have to turn the engine off and back on to get it running again. Additionally, you've noticed a gasoline smell coming from inside the vehicle at times.

Your Odyssey unexpectedly shut off at a stoplight, triggering a battery warning light and causing complete loss of power. A warning message appeared about the auto start/stop system, and the vehicle wouldn't restart until you opened the door and pressed the start button multiple times while repeatedly depressing the brake pedal. This has happened twice so far (late February and March 21, 2026) with 46,880 miles on the vehicle.

After driving your Odyssey and shutting it off, the car won't start if you try to restart it within a couple of minutes—it cranks but fails to turn on. This only happens after a warm drive, never during cold starts, and it's been occurring more frequently (about 8 times in 9,000 miles so far). The issue likely involves the electrical or fuel system struggling to restart once the engine is warm.

Your car's engine shuts off at red lights due to the automatic start-stop feature, but sometimes won't restart when the light turns green—it takes a few minutes to start again using the push button. This creates a safety concern, especially when driving with passengers in busy intersections. The dealer hasn't been able to reproduce the problem or identify a cause, but disabling or repairing the start-stop system may resolve the issue.

Your engine is stalling when you release the brake after stopping at a traffic light with the air conditioning on. The auto idle stop system engages while stopped, but when you try to move forward, the engine shuts off instead of restarting smoothly—though it will restart after 5-10 seconds. This issue appears to be related to a known NHTSA investigation (EA25004) involving the same problem.

Your Odyssey's Auto Idle Stop feature has shut down unexpectedly multiple times, leaving you stuck at traffic lights unable to move while warning lights flash—requiring you to manually shift to Park or turn off the engine to restart it. This has happened three times in two months even after Honda replaced your battery and performed a full system check. Additionally, your remote start feature won't work when trying to start the vehicle from outside.

Your Odyssey's automatic engine stop-start system frequently fails to restart the engine when you come to a stop, causing dashboard warning lights to flash. When this happens, you have to fully power the vehicle off and back on again, which takes about 15 seconds—and this occurs almost every day, even on the highway. The button designed to disable this auto-stop feature is also unreliable and doesn't always work when pressed. The fix will likely involve diagnosing the stop-start system's electrical components and possibly updating or replacing the battery management software or related sensors.

Your 2025 Honda Odyssey unexpectedly shut off while stopped at a traffic light, and a warning light flashed on the dashboard. You were able to restart it manually, but this shutdown happened multiple times. The vehicle has not been repaired or diagnosed by a dealer.

Your Honda Odyssey's AutoStart system is failing to restart the engine, which forces you to do a complete restart while stopped in traffic. This happened multiple times even after your car received a new battery, and the problem returned within two months. Additionally, one of your front parking sensors goes off randomly, and cleaning hasn't fixed it. The repair may involve diagnosing the AutoStart system's electrical components and checking the parking sensor wiring or sensor unit itself.

Your Odyssey has stalled and shut down while stopped in traffic when the Auto Idle Stop feature turned off the engine at a red light. When you tried to restart it, all warning lights flashed and the engine wouldn't turn back on for several attempts. This has happened 3-4 times over a few months. The dealership noticed the engine cranks slowly when you turn the key, but their diagnostics couldn't identify a specific problem.

Your van is having trouble starting, requiring you to press the start button multiple times before the engine cranks. The battery tested good, but your van left you stranded at a store when it wouldn't start at all, though lights and radio still worked—a jump start got it running again. This suggests a problem with the starter motor or the electrical connections that power it rather than the battery itself. The fix will likely involve testing or replacing the starter motor and checking all battery cable connections.

The idle stop feature sometimes fails to reengage / restart the engine. One time, the van failed to restart and the vehicle completely locked up while I was in an exit ramp to the freeway. I had to turn the van off and turn it back on to get it to shift into drive and go. Similar events have happened a number of times, since the summer of 2025. We have taken it to the dealer twice now, and have been told to "monitor" it. We found the NHTSA report #EA25004 and believe this is the issue we are experiencing. Occasionally, the idle stop will restart, but it's a very violent restart (car sputters and chokes in restart, sounds like it might stall). The car will make a warning light flash and give an error message, but it always clears too quickly to read it.

Complaint Description: While driving my 2025 Honda Odyssey, the Auto Idle‑Stop system engaged in the middle of an intersection at a traffic light, shutting the engine off as designed. When I released the brake pedal, the engine failed to restart, leaving the vehicle stalled in traffic. The dashboard displayed warning indicators including the battery light, and the only way to move the vehicle was to turn off the car completely several time and try to manually restart the engine. This issue has occurred multiple times and poses a serious safety risk, especially when it happens in intersections or heavy traffic. I almost got hit by an oncoming car! On each occasion, surrounding traffic was forced to maneuver around my vehicle, creating the potential for a rear‑end or a side collision. this has been happening for a long time now and these instances are occurring almost weekly at this point. They are increasing. I have seen that other 2025 Odyssey owners are reporting the same issue — engine shuts off after Auto Idle‑Stop activates and will not restart — sometimes requiring a full restart and causing dangerous traffic situations on carfax.com. Based on similar NHTSA‑documented complaints and investigations into Honda Auto Idle‑Stop restart failures, this appears consistent with a known defect pattern involving stalled engines and failure to restart after idle‑stop engagement. (lawinfo.com and edmunds.com) The dealership has already replaced my low pressure fuel pump and state that they are fulkly aware of the issue and have not provided a permanent fix, and the problem continues to occur unpredictably. My wife and 4 children are in this car all the time. This defect could easily lead to an accident if the vehicle becomes immobilized in moving traffic. I am reporting this to ensure it is documented as a potential safety defect requiring investigation and mitigation.

Since purchasing this vehicle brand new off the truck, we have had it back at the dealership multiple times ,we've taken it for the plug in console not working for firesticks, a sensor not working on the passenger side door and claiming it to be open, the sliding door not working correctly, the doors locking and refusing to unlock, battery draining, ac not working, stalling, dying at lights, slamming on its own brakes with nothing around, transmission acting weird, it putting itself in to sport mode, transmission sticking, doors not unlocking or not locking, sensors going off, random errors on dash, screens not working, Car play not working, suspension popping, steering being wiggly and loose, brakes squeeling. Today we were told by the dealership "he saw the damage that is resulting in needing to replace the steering column. With that being said, it is considered a safety hazard to drive this vehicle with the condition the steering column is in." This is after multiple times of saying nothing is wrong to we have to charge the battery to you need a new starter to this.

Auto Start/Stop system engaged, when given gas the engine did not start. Battery light came on and had to turn off and on the vehicle to start the engine. EA25004 - Investigation [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The vehicle completely stalled, we believe it’s related to the engine in reference to the idol on and off mechanism. We began to drive forward and the auto on off starter caused the car to completely shut down and freeze in an intersection.

Idle Stop Failure. This has occurred many times. Presents itself as: Failure to restart upon releasing the brake. Rough restart. Sometimes have to completely turn off car and restart.

The car stopped while driving in the middle of the street and would not turn off or on.

Over the past month, I have experienced several incidents where my 2025 Honda Odyssey’s Auto Idle Stop (AIS) system failed to restart the engine after stopping at traffic lights. Each time, the engine did not turn back on when I released the brake, leaving me stalled in traffic and prompting error messages on the dashboard. There is currently no way for owners to permanently turn off this feature. When I took my vehicle to the dealership, I was told my starter was already having issues despite the car having less than 10,000 miles on it. This ongoing problem has made me concerned for my safety and the reliability of my vehicle.

In January 2025, we drove to Florida from Michigan. When I started my car every signal light came on. It would not allow me to shut down. We drove it to Orlando Honda and they said the sensor light was covered with road salt. It was very scary. In November 2025 we were driving home in a snowstorm. The sensor in the front got covered and shut down the speed control, warning lights of crossing lane, detecting cars on right or left. I get told every time can’t duplicate. The automatic bright lights got stuck on after only a month of having this car. Dealership says it was off. Well it wasn’t and they still do not work. Speed limit sign on dashboard will go up to 85 miles per hour this is in a 25 mile area. Again they say can’t duplicate. Brakes feel mushy to myself and husband. Again we’re told there is nothing wrong with it. When the speed controls are set there is at least 2 miles difference with my Waze speed and the vehicles speed. I’m told this is normal. Well it’s not. Something is wrong with the electrical system. I owned a Honda Odyssey before and I never had any issues with that one. We’re getting ready to drive to Florida and I’m terrified the system will shut down again. I was told that having road salt on a sensor is not a warranty issue. Well, it is because of poor design. I’m also afraid once this vehicle is no longer under warranty I will be paying $ for this poor design. I’m not happy and now wish I had my old one back.

My 2025 Honda Odyssey has been completely shutting off after the stop-start shuts the engine off. When the car actually “stalls” is when I let off the brake and it’s time to start going. Then I hear a ding, the dash lights come on, and I have to frantically hit the ignition button. This is happening at stop lights where there is the risk for other cars to safely go when the light turns green. I have to completely shut off the car and restart the engine while traffic is going on green.

Vehicle shuts down and will not restart. So far this has happened three times. After a long delay, took foot off gas, held brake and pushed start and would not start. On third attempt vehicle was very labored on start

Idle stop engine turned engine off at a stop light. When the foot was removed from the brake pedal the engine struggled to start up. It took several attempts to get the engine to start up. This has occurred before and the dealer replaced the battery. However, it is now happening again. There were no warnings .

. When auto start/stop engages at stoplights and fails to restart radomaly but not always, the vehicle remains stationary and blocks traffic lanes when battery light turns on. This creates hazardous conditions where other vehicles must maneuver around a stalled vehicle in intersections, risking rear-end collisions and traffic disruptions. Dealer was not able to replicate Issue as this, i expeted this becouse happens randon times maybe based on weater or after driving for longer peroids . Dealership's only recommendation was to manually disable auto start/stop every time the vehicle is operated. This is unacceptable for a new vehicle and defeats the purpose of this safety

Stopped at red light. Auto start/stop engaged. Light turned green let off of brake and pressed gas. Engine did not start. Couple seconds later engine started.

The vehicle intermittently fails to restart after the auto start/stop stopped the engine. This happened several times when stopped at a traffic signal, nearly causing an accident when cars behind expected to move after the traffic signal turned green. There were no warnings or indications prior to the failure to start. Multiple attempts to restart the vehicle failed until at least a minute or so had elapsed. The vehicle has also intermittently failed to start after being parked for a few minutes after being driven for 20 minutes or so. The starter has generally sounded weak when starting, and when it fails to start it sounds like the engine tries to start turning for a fraction of a second before it stops trying to crank the engine. It almost seems like the start duration is too short or the ECU thinks the engine has successfully started when it hasn't. I brought the vehicle into the dealership to have this checked, and they replaced the battery saying it was bad. However, the failures to start continued to happen shortly after. I returned the vehicle to the dealership to be checked again. They have not yet identified anything that could be causing the issue. They claim the battery and starter test good. Based on similar complaints, it seems that this is an issue with many of these vehicles. Honda needs to identify the root cause of this failure to start issue.

COMPLAINT: 2025 HONDA ODYSSEY AUTO START/STOP SYSTEM FAILURE Component Failed: Auto start/stop system fails to restart engine after automatic shutdown. Vehicle available for inspection. Appears related to investigation INOA-EA25004-10033. Safety Risk: Vehicle has failed to restart approximately 12 times since May 2025, all at intersections with active traffic. When auto start/stop engages at stoplights and fails to restart, the vehicle remains stationary and blocks traffic lanes when lights turn green. This creates hazardous conditions where other vehicles must maneuver around a stalled vehicle in intersections, risking rear-end collisions and traffic disruptions. Dealer Confirmation: Yes. Authorized Honda dealership tested battery (good), contacted Honda customer support directly. Honda acknowledged the issue but provided no diagnostic solution or repair procedure. Dealership's only recommendation was to manually disable auto start/stop every time the vehicle is operated. This is unacceptable for a new vehicle and defeats the purpose of this factory system. Manufacturer Inspection: Authorized Honda dealership consulted with Honda customer support. No fix or remedy provided. Warning Symptoms: None. No warning lamps or dashboard messages appear before or during failure. Auto start/stop system operates normally until restart phase, then engine fails to restart. First occurrence May 2025. Problem occurs intermittently.

With vehicle auto start/stop feature enabled, vehicle just shuts off when attempting to start back up after shutting off at a stop light. It has happened multiple times and recently it even happened with the auto start/stop feature turned off. Took it to the dealership and they tested everything to include the battery and they weren’t able to duplicate it. A review of forums showed other people with the same issue and it is pointing to a faulty starter, but no recall has been issued yet.

The Idle Stop feature failed to restart the engine when I released the brake after having stopped at a traffic light. Eventually restarted after more than a minute of manually pressing the ignition button.

I am having issues with my auto start/stop, also, occasionally has issues starting from a cold start! I was at a red traffic light, and once the light turned green I went to go and my car died. I had to put it in park and try and restart it and it took me three times for it to restart. Everybody was honking at me. This is a safety issue.

Since July 4, 2025, this can has intermittently shut off and stalled on me, my wife and my family and has refused to start. It has now been back to the service department of Trust Honda of Palmdale 4 different times for the same problem and the battery has been replaced on this van back in July. Most recently, it stalled just two days ago in rush hour morning traffic on the 405 Freeway going South in the San Fernando Valley. The display on the dash read “dead battery “. It took over 20 minutes for the van to start and my wife was able to move it off of the freeway to a safe location.

The issue involves the auto start/stop system on my 2025 Honda Odyssey Touring. When the feature is turned on, the vehicle intermittently fails to restart after coming to a complete stop. The problem does not occur when the start/stop system is disabled. During normal driving, the engine shuts off as expected at a stoplight, but when I release the brake, the vehicle hesitates or fails to crank, leaving it stalled in traffic. The Honda dealership confirmed the issue and stated that the starter motor needs to be replaced. The van has approximately 9,300 miles. No warning lights or messages appear before the failure. The problem occurs only when the start/stop system is active. This presents a safety concern, as the vehicle can lose power and fail to move when traffic lights change or when merging, increasing the risk of a rear-end collision or blocking intersections. The vehicle is currently being inspected and repaired by the Honda dealer and is available for inspection upon request.

THE AUTO STOP/START OR AUTO IDLES FEATURE ON THE CAR keeps stalling after the car stops AT THE RED LIGHT. It can cause a rear collision.

The contact owns a 2025 Honda Odyssey. The contact stated that the Engine Auto Start-Stop system failed to operate as needed. The contact stated upon coming to a stop, the engine shutoff; however, upon releasing the brake pedal, the contact became aware that the engine failed to restart as designed. A message of a systems failure was displayed, and an image of a pedal and the Push to Start button were displayed. The contact was able to manually restart the vehicle immediately. The contact stated that the failure had been recurring and had worsened. The contact stated that the vehicle could only be manually restarted after 10 minutes, nearly causing a crash. The dealer was contacted, and an appointment was scheduled for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 16,000.

Vehicle stalled on a highway after an idle stop event at a stop light. Vehicle went to PARK. Required a full restart by operator to go when light changed and traffic was flowing in other lanes. Dealership examined next day and indicated battery was good. Voltage dropping to 8V to 10V when starting. Recommended to disable idle stop each time vehicle is started. A new starter was authorized and placed on order.

Van completely shut down while in an intersection and the battery light came on. It was hard to restart. Took it to the dealership and they cannot find the problem.

The contact owns a 2025 Honda Odyssey. The contact stated that the vehicle had a new feature that, when the vehicle was at an idle stop, the engine would shut off automatically, and while the vehicle was stopped for several seconds. The engine was supposed to restart automatically when the driver released the brake pedal. The contact stated that on two occasions, the engine shut off and failed to restart. The contact was able to restart the vehicle. The vehicle was taken to the dealer; however, no cause for the failure was found. The body control module was replaced; however, the failure persisted. The manufacturer was not notified of the failure. The failure mileage was approximately 10,000.

I am reporting a recurring issue with my 2025 Honda Odyssey, which exhibits difficulty starting the engine. Approximately two months after purchasing the vehicle in Dec 2024, the original battery failed and was replaced under warranty. However, the vehicle continues to experience problems when attempting to start. When I press the start button, the engine hesitates, cranks slowly, or feels as though it nearly fails to start. This issue occurs intermittently, regardless of weather conditions or the duration the vehicle has been parked. No warning lights or error messages have appeared on the dashboard The problem has occurred multiple times, most recently on Friday August 15th 2025, and creates a safety concern, as the vehicle’s unreliable starting could leave me stranded in potentially hazardous situations, such as remote locations or adverse weather. I have not yet had the vehicle inspected by a dealer for this specific issue, but I plan to schedule a service appointment to diagnose the problem. The prior battery replacement suggests potential issues with the electrical system, starter, or related components, possibly linked to the auto start/stop system currently under NHTSA investigation for 2018–2025 Honda Odyssey models. Additionally when driving down the road especially at low speeds the engine hesitates as if it’s not getting enough gasoline. Lastly the AppleCarplay screen and all other associated screens randomly go out. I have been to the dealership 3 times for repairs and they give me the run around saying they don’t notice anything so Honda won’t pay for anything and send me on my way.

On two separate occasions the vehicle’s engine has turned off when stopped as part of the Auto Idle Stop feature and then did not restart when I took my foot off the brake and pushed on the gas pedal. I was stuck in traffic frantically trying to get the van to restart and eventually was able to get it. This is a new van I’ve had less than a year. I took it to the dealer after the first incident and described the problem. They kept it for more than a day troubleshooting and didn’t find a solution. Verbally they recommended using the button that turns off the Auto Idle Stop feature that must be pressed each time the van is started to turn the off the feature. I’ve done that most of the time since, but I happened to forget this week and then it happened a second time where I was unexpectedly stuck in traffic with the engine not coming back on.

The auto on/off while idling will randomly fail. The car stalls, all emergency lights turn on and the car won’t start for a few minutes. This has occurred at stop lights and in traffic after coming to a complete stop and the car turns off when idling. The car is only 6 months old. The first occurrence happened at the 3 month mark and has become more persistent. I’ve had my battery checked and that was not an issue.