The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated that while driving at approximately 60 MPH, the brake pedal was depressed and failed to respond. The "Stop Car, Check Brakes" message was displayed. The ABS and traction control warning lights were illuminated. The contact pulled over and turned off the vehicle, and stated that after restarting the vehicle, the warning lights were no longer illuminated. The vehicle was taken to a local dealer where it was diagnosed and serviced under NHTSA Campaign Number: 20V746000 (Engine) and 21V749000 (Exterior Lighting, Electrical System). The vehicle was repaired; however, the failure reoccurred intermittently. The vehicle was then taken to Homestead Hyundai (111 S Homestead Blvd, Homestead, FL 33030) where it was diagnosed that the power brake booster and rear wheel speed sensors needed to be replaced. The power brake booster was replaced; however, the failure reoccurred. The vehicle was then taken back to the dealer, and the wheel speed sensors were replaced. The manufacturer was not made aware of the failure. The approximate failure mileage was 130,000.

- Coral Gables, FL, USA