2019 Toyota Prius Electrical Problems

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.

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.