TL*THE CONTACT OWNS A 2010 TOYOTA PRIUS. WHILE DRIVING AT LESS THAN 5 MPH, THE CONTACT WAS COMING TO A STOP TO PARK HER VEHICLE WHEN THE VEHICLE ACCELERATED ON ITS OWN. THE BRAKES WERE APPLIED WHERE THEY DID NOT ENGAGE. THE VEHICLE CRASHED INTO A BRICK WALL AND THERE WERE FRONT END DAMAGES AND NO INJURIES. THE VEHICLE WAS TOWED TO A TOYOTA COLLISION SHOP. THERE HAVE BEEN NO DIAGNOSTIC TEST TO INDICATE WHY THE VEHICLE ACCELERATED ON ITS OWN. THE FAILURE AND CURRENT MILEAGE WAS 6000.