TL* THE CONTACT OWNS A 2011 TOYOTA SIENNA. THE CONTACT STATED THAT WHILE DRIVING 3 MPH IN REVERSE. THE BRAKES WERE ENGAGED AND DEPRESSED INTO THE FLOORBOARD ABNORMALLY AND THE VEHICLE DID NOT RESPOND. THE CONTACT WAS UNABLE TO STOP THE VEHICLE AND WAS INVOLVED IN A CRASH. THERE WERE NO INJURIES AND A POLICE REPORT WAS FILED. THE MANUFACTURER SENT AN INVESTIGATOR TO INSPECT THE VEHICLE FOR THE FAILURE, HOWEVER, THEY WERE UNABLE TO DUPLICATE THE FAILURE. THE CURRENT MILEAGE WAS 3,500 AND THE FAILURE MILEAGE WAS 850.