NHTSA Complaint #11122754 — 2013 BMW X5 SAV

WHEN PARKING THE VEHICLE THE PARKING BRAKE SYMBOL WENT YELLOW AND IT SHOWED A MESSAGE STATING IT WAS MALFUNCTIONING AND THE VEHICLE MAY ROLL. THIS CAR HAS AN ELECTRICALLY ACTUATED PARKING BRAKE. SINCE THE CAR MOVED FINE WITHOUT ANY NOISE AND IT GAVE NO INDICATION OTHERWISE IT SEEMED SAFE TO CONTINUE DRIVING. SOME TIME LATER IT STARTER MAKING A SCREECHING NOISE FROM THE REAR RIGHT. AFTER STOPPING AT A TRUCK STOP THE BRAKES WERE FOUND EXCESSIVELY HOT IN ADDITION TO MAKING NOISE. AFTER BEING TOWED TO A SHOP IT WAS REVEALED THE PARKING BRAKE HAD PARTIALLY ACTIVATED, DRAGGED THE SHOES UNTIL THEY WERE WORN DOWN, MADE METAL TO METAL CONTACT WITH THE ROTOR HAT AND CREATED ENOUGH HEAT TO MELT ALL ASSOCIATED HARDWARE ON BOTH SIDES. UNDER SLIGHTLY DIFFERENT CIRCUMSTANCES IT IS NOT UNLIKELY THAT ONE OR BOTH REAR WHEELS COULD HAVE LOCKED UP WHILE DRIVING LEADING TO LOSS OF CONTROL AND AN ACCIDENT. THE ERROR MESSAGE ASSOCIATED WITH FAILURE OF THIS MODULE IS HIGHLY MISLEADING, SINCE IT SEEMS WITH THE FAILURE OF THIS MODULE THE VEHICLE HAS NO WAY OF KNOWING WHETHER THE PARKING BRAKE IS ENGAGED OR NOT.