2023 Toyota Prius POWER TRAIN,SERVICE BRAKES

The contact owns a 2023 Toyota Prius. The contact stated that while sitting in traffic with the brake pedal depressed, the vehicle started rolling backward even though the gear shifter was in drive(D). The contact stated that upon attempting to accelerate, the vehicle failed to respond and continued to roll backward. The contact stated that after turning off and restarting the vehicle, the vehicle responded as needed. There was no warning light illuminated. The vehicle was not diagnosed or repaired by a dealer or an independent mechanic. The manufacturer was not notified of the failure. The failure mileage was unknown.