THE CONTACT STATED THAT THE VEHICLE WAS PARKED IN THE GARAGE WITH THE GARAGE DOOR OPEN AND WITH THE PARKING BRAKE ENGAGED. THE CONTACT WAS NOTIFIED BY A NEIGHBOR THAT THE VEHICLE HAD ROLLED FORWARD OUT OF THE GARAGE DOWN A SMALL INCLINED DRIVEWAY, CROSSED THE STREET, AND CRASHED INTO THE CORNER OF THE NEIGHBOR'S HOUSE. THE VEHICLE THEN ROLLED BACK INTO THE STREET AND STOPPED. PRIOR TO THE INCIDENT, NO WARNING INDICATORS WERE ILLUMINATED. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS TOWED TO AUDI SOUTH COAST (1425 AUTO MALL DR, SANTA ANA, CA 92705 (714) 973-7766) WHERE IT WAS AWAITING DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND A CLAIM WAS FILED. THE FAILURE MILEAGE WAS 500.