NHTSA Complaint #11680608 — 2015 TOYOTA AVALON

The contact owns a 2015 Toyota Avalon. The contact stated that while driving at an undisclosed speed, there was an abnormal grinding sound coming from the brakes. The contact stated that the brake warning light illuminated, and the brake independently activated. The vehicle was taken to a specialty brake shop, where it was diagnosed that the brake actuator had failed, causing the ABS system to activate independently. The vehicle was repaired. On the drive back to the residence, the failure recurred. The vehicle was taken to an independent mechanic where it was diagnosed with brake master cylinder failure. The brake booster, gasket, and brake actuator were replaced. The contact stated that two weeks later, the failure reoccurred. The vehicle was taken to the dealer where it was diagnosed and DTC: C1441 and C1431 were retrieved, indicating an issue with the ABS system lateral acceleration sensor circuit or the brake booster. The dealer became aware that the front bumper bracket had paint on the part that did not allow for the vehicle to brake correctly. The brake pedal support assembly with sensor was replaced, and the paint was removed. The vehicle was repaired. The contact related the failure to NHTSA Campaign Number: 15V728000 (FORWARD COLLISION AVOIDANCE). The manufacturer was made aware of the failure. The failure mileage was 83,829.