TL* THE CONTACT OWNS A 2011 FORD F-150. AFTER THE REAR WINDOW DEFROSTER WAS ACTIVATED, THE PASSENGER SIDE OF THE REAR WINDOW SHATTERED. THE CONTACT NOTICED THAT THE CASING OF THE HEATING ELEMENT AND THE SHATTERED AREA OF THE WINDOW CONTAINED BURN MARKS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED. THE VIN WAS UNKNOWN. THE APPROXIMATE FAILURE MILEAGE WAS 80,000.