2020 Toyota Corolla driver assistance problems

Filed Jul 21, 2025 · Brakes, Driver assistance · 116,000 miles · CA

The contact owns a 2020 Toyota Corolla. The contact stated that while driving approximately 10 MPH and making a left turn, the Forward Collision Avoidance system activated ad the vehicle stopped independently. The contact stated there was no warning light illuminated. The contact stated that the braking function resumed, and the contact was able to continue driving. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the Forward Collision Avoidance was functioning correctly and there were no failure found with the brakes. The vehicle was not repaired. Additionally, the contact reported that the vehicle had started to shake abnormally while driving at speeds under 40 MPH. The contact stated no warning light was illuminated. The contact had not taken the vehicle back to a dealer or mechanic to be diagnosed. The manufacturer was not informed of the failure. The failure mileage was approximately 116,000.

Filed Jun 24, 2025 · Driver assistance, Fuel system · NC

Fuel pump system failure causing vehicle warning lights to come on and not turn off, affecting vehicle performance for going up hill as well as vehicle completely shutting off in middle of road . Major safety hazard

Filed May 15, 2025 · Driver assistance · TX · crash · 2 injuries

The automatic emergency breaking and forward collision warning failed to alert and turn on and I wrecked into an object. My life was put at risk and I wrecked my car. The problem has not been reproduced or confirmed by the independent service center. The vehicle is currently being inspected by insurance estimator. There was no other alerts or messages to alert prior to collision.

Filed Mar 25, 2025 · Brakes, Driver assistance · CA

The anti-lock brake system (ABS) malfunctioned when the vehicle was still very new, with only 25,000 miles. Diagnostics from two independent service centers confirmed that the ABS electronic control unit is failing due to an external failure. Both specialists stated that such a failure is highly uncommon and is a clear quality issue related to the electronic components. A critical system like ABS should not fail this early, raising serious concerns about the durability and reliability of the vehicle’s braking system.

Filed Feb 19, 2024 · Driver assistance, Electrical · CA

Electrical issue on vehicle says that vehicles safety features are unavailable and all the light indications on the dash are lit up. It was taken to the dealership several times but the issue still hasn’t been resolved.

Filed Jan 30, 2024 · Brakes, Driver assistance · 90,249 miles · MA

The contact owns a 2020 Toyota Corolla. The contact stated while the vehicle was parked, the gear shifter was shifted to drive and then reverse, but the vehicle failed to respond as needed. No warning light was illuminated. The vehicle was towed to the dealer and a diagnostic test was performed. The vehicle was diagnosed with a locked cylinder. The dealer stated that there was recall for the failure however, the vehicle had exceeded the mileage limitation. The vehicle was repaired. The contact referenced the federal safety agency Campaign Number: 19V544000 (Electronic Stability Control, Service Brakes) as a possible solution to the failure however, the VIN was not included in the recall. The manufacturer was not made aware of the failure. The approximate failure mileage was 90,249.

Filed Mar 17, 2023 · Acceleration, Brakes · CA · crash · 1 injury

I was going to work on 12/15/2022. There was a stop sign and I needed to take a right turn in order to join the freeway-10 east highway to head on to work. it was about 6: 40 am approximate time. There were too many cars ahead of me at the stop sign. My brakes failed to hold on while I waited for my turn. There were at least 3-4 cars ahead of me. Therefore I did not want to hurt anyone or any other car ahead of me. Therefore I veered off to my right-hand side where there was some space and tried to stop the car but it did not do so. Therefore, My car had to hit the high-way pole to come to a stop. The airbags deployed and hit me more to my right side. The car got totaled as per California casualty insurance information. I am glad to be alive. I went later to the hospital as there were no direct visible injuries.

Filed Aug 27, 2022 · Driver assistance, Transmission · MO · crash · 3 injuries

I am not sure what the component is but I am driving and as I accelerate the gas my car will lose power to increase speed. If I am at the stop sign or stop light and I proceed to go the car will stall and not get going once I place my foot on the gas. I have reached out to the dealer by phone and when I have obtained service I am being advised that it's nothing. But I have experienced it on multiple occasions and even had an accident and nothing is being done to resolve the issue. I know that it can't be normal for the vehicle to do that and I am tired of getting the run around in regards to it. I was able to see that there has been a recall but do not see that it is in regard to me vin number. Can you please assist me with this matter. I should not be in the middle of driving or at a stop light and not able to accelerate my vehicle to a regular speed. I would like to have this matter looked into by a different Toyota dealer. Also it happens randomly and when I take to the dealership nothing is ever done and the issue is constantly being ignored. I am being told that due to no check engine light being on that my car is fine and its not. I don't want to lose my life due to the fact that I have purchased a faulty car and have not been made aware of any issues to protect my safety.

Filed Apr 10, 2021 · Driver assistance, Steering · 30,000 miles · CA

Drive assist occasionally swerves out of lanes at parked vehicles, pedestrians, and even cars in on coming lanes. Happens inconsistently and is unpredictable. When the car is perfectly centered with drive assist on, you begin to let your gaurd down. Which is when you least expect your car to forcibly turn the steering wheel at an unsuspected bicyclist.

Filed Oct 10, 2020 · Driver assistance, Electrical · 2,296 miles · IL

I was waiting at a stoplight with my foot on the break waiting for it to turn green. I turn the wheel to make a left turn and put my foot on the gas and the car diedall the buzzers whistles and lights were flashing on the dashboard.. I was able to shift the car to park and back to drive but nothing happened I was in the middle of traffic on a busy street and was just getting ready to call the tow truck when I decided to turn the car off. When I turned it back on it was fine and I was able to turn left. That happened to me twice on different occasions. Third time I was turning into a driveway and a truck pulled in front of me I had to put my foot on the break. And then I put my foot on the gas and turned left then right into the driveway and it died. Ithe dashboard said put in park when I put it in park it said engine power low. The first time I took it in to toyota I was sitting there for six hours and they could find nothing wrong. They told me they were working with corporate and no one had an answer for me. After the third time I called corporate and was dealing with a woman who was very professional and try to be helpful and told me to take a back to the dealership. I took a back left it for two days and they could find nothing wrong. The outcome was that if it happens again I should have it towed back to the toyota dealer and not turn it on. I am very concerned I am worried about driving and having someone crash in to me if my car stops in the middle of traffic. I had a toyota before and it was fine but I have to tell you if I get through this one which is a lease I will never buy another one again