The contact owns a 2024 Hyundai Santa Fe. The contact stated that while pulling into an automatic car wash and depressing the brake pedal, the brake pedal travelled down to the floorboard, and the vehicle failed to respond. The vehicle then drove into the car wash while the car wash conveyor system was not engaged. The contact stated that the failure recurred while driving 2-3 MPH in a parking lot, and the vehicle rear-ended another occupied vehicle. There was no damage or injury sustained. Additionally, the contact stated that while driving 5 MPH and pulling out of a parking lot, the brake pedal was depressed, but travelled down to the floorboard, and the vehicle failed to respond. The contact pumped the brake pedal, but the vehicle failed to respond and rear-ended another occupied vehicle. The contact sustained cuts on the left leg from hitting the leg against the dashboard while pumping the brake pedal. The contact's vehicle sustained scratches on the front end, and the other vehicle sustained damage on the bumper plastic cover. A police report was filed. Both vehicles could be driven away from the scene. The air bags did not deploy. There was no warning light illuminated. The vehicle was taken to the dealer for diagnostic testing on several occasions; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.