2019 Toyota Prius — Known Issues & Recalls

Your car's roof panel is developing rust that's eating through the metal from the inside out, which two body shops say requires a full roof panel replacement. Water can seep through the rusted areas and potentially damage your airbags and electrical systems. The rust started with small bubbles a few years ago but has progressed significantly. Fixing this will likely involve removing and replacing the entire roof panel.

Your car's coolant system failed because coolant was leaking into the catalytic converter. Multiple mechanics across different states, including a Toyota dealer, identified this as a defect specific to the 2019 Prius that requires a repair costing over $2,000. The warning light didn't illuminate until all the coolant had already drained from the system.

Your engine temperature warning light came on while driving on the freeway. The dealer found that your coolant reservoir was very low due to a leak in the exhaust center pipe that allows coolant to escape internally. This repair costs over $2,000 since your warranty has expired, and you're concerned this is a design flaw that could cause dangerous engine overheating. The fix will require replacing the leaking exhaust center pipe and refilling the cooling system.

When driving at low speeds with your windows down and the car stereo playing, the music can be loud enough to drown out the pedestrian warning sound that's designed to alert people outside your car. This means pedestrians may not hear the warning tone and could be at risk. The fix would likely involve adjusting the audio system settings or the pedestrian warning speaker volume to ensure the warning sound is always audible.

Your complete set of Dunlop Enasave 01 A/S tires failed prematurely at 44,000 miles with exposed steel belts and snapped cords on all four tires, despite the vehicle being garaged and not exposed to abnormal conditions. You noticed a warbling sound while driving, and both a tire shop and your Toyota dealership confirmed the same issue across all four tires. The tires will need to be replaced.

Your Prius came with Toyo tires that wore out excessively fast — at just 34,000 miles, they had such poor tread that the front end shimmied severely during highway driving, making it unsafe to continue. A tire specialist expressed concern about the tire quality and noted that another similar Prius had blown a tire due to poor tread at comparable mileage. You'll likely need to replace the front tires with a higher-quality set that won't wear prematurely.

Since October 2023, your 2019 Prius has been experiencing unpredictable braking, steering, and lane-keeping interventions that seem to activate on their own — even when no correction is needed. These false alerts happen frequently on highways and during turns, creating safety concerns. You've replaced multiple parts and had sensors recalibrated at Toyota dealerships, but the problem persists because it appears to be software-related rather than mechanical. The fix will likely require a software update or ECU reprogramming from Toyota to correct the overly sensitive driver-assist system sensitivity.

Your Prius has a leak in the exhaust heat-exchanger coolant pipe, which is part of the hybrid cooling system. When this pipe fails, coolant can drain completely, causing your engine to overheat suddenly and potentially lose power or shut down while you're driving — creating a serious safety risk, especially with children in the car. Your dealer confirmed the leak and says the vehicle isn't safe to drive until the pipe is replaced, which costs about $2,249 and requires ordering a part that's currently backordered. The fix involves replacing the front exhaust cooling pipe with a new one once it becomes available.

Your car suddenly accelerated when you applied the brakes while pulling into a parking space at slow speed, causing it to hit another vehicle before stopping. The brakes did not stop the acceleration, which was completely out of your control. The tow truck operator experienced the same unexpected acceleration issue at the dealer, but Toyota's inspection found no problems and no warning lights appeared.

While parked and trying to turn off your car, it suddenly surged forward on its own and the brake warning light appeared. When you pressed the brake pedal, it didn't respond, so you shifted to reverse to avoid a wall—but the car surged backward instead and hit the vehicle behind you. The dealership inspected it for three days but reported finding nothing wrong, though you remain concerned this could happen again.

While shifting into reverse, your car's engine suddenly revved loudly and accelerated backward on its own at high speed. Your brakes did not respond when you pressed them, and shifting gears also failed to stop the acceleration. The car only stopped after hitting a curb and colliding with a parked vehicle. No warning lights or messages appeared before this happened.

Your vehicle was involved in an accident that resulted in a total loss, but the airbags did not deploy. The occupants sustained bodily injuries in the crash. This suggests the airbag system may have failed to activate when it should have during the collision.

Your car was hit from behind while stopped, and it unexpectedly accelerated on its own. The airbags didn't deploy, and your brakes didn't respond at first—even when you pressed the pedal hard. When the brakes finally worked, there was a significant delay (62-100 feet) before the car slowed down, forcing you to swerve to avoid other vehicles. After restarting the car, it operated normally with no warning lights. The issue may require diagnostics of the brake system, accelerator controls, and airbag sensors to identify why they didn't function properly during the collision.

The owner reported an issue with their service brakes but did not provide details in the complaint text itself (they referenced an attachment). Without more information about the specific brake problem, it's unclear whether this involves brake pad wear, reduced stopping power, brake fluid issues, or another brake system concern. A mechanic will need to inspect the brake system to diagnose and repair the issue.

Your Prius is losing coolant, likely due to a leak in the front exhaust pipe heat exchanger—a known issue covered under Toyota Service Bulletin 0135-19. You'll notice the check engine and engine HOT warning lights are on, and your coolant level is low, even though you don't see puddles underneath. The dealer has identified the problem but the replacement parts are on backorder, so the repair hasn't been completed yet. Fixing this will require replacing or repairing the heat exchanger component in your cooling system.

Your back middle seat belt is stuck and won't release, which prevents you from folding up the right rear seat or using either the middle or right rear seats. The seat belt mechanism is mechanically locked in the deployed position and cannot be retracted. This issue will require the seat belt assembly or its locking mechanism to be inspected and repaired by a technician.

Your car feels like it's wobbling while driving, similar to having a bubble or blister in a tire. Even though your vehicle is only 4 years old with 44,000 miles, an inspection by both a tire shop and the Toyota dealership found that all four tires are damaged — the internal belt cords have snapped, exposing the nylon and steel belts underneath. This damage puts your vehicle at risk of a blowout on any of the four tires. The fix will require replacing all four tires.

Your windshield developed a three-foot crack down the middle without any warning or visible impact, even though your car is relatively new with less than 16,000 miles. You noticed the crack after work when you hadn't seen any debris hit the windshield earlier that day. Toyota quoted $1,200 to replace it, but your extended warranty doesn't cover windshield damage. The fix will involve a complete windshield replacement.

When you press your brake pedal, you feel pulsation or vibration without any warning signs. After inspecting your brakes, you discovered corrosion on all four brake rotors, which is causing the pulsing sensation. The dealer confirmed the rotors need replacement but stated they're not covered under warranty and there are no recalls for this issue. Fixing this will require replacing all four corroded brake rotors.

When it rains, your car displays a warning message to clean the parking assist sensor and beeps continuously while driving. Pressing the back button doesn't stop the beeping, and a proximity sensor warning also appears. The problem stops once the rain stops, even if you've already cleaned the sensors.