TL* THE CONTACT OWNS A 2010 FORD F150. WHILE PARKED, THE CONTACT NOTICED A BURNING SMELL FROM THE VEHICLE. THE CONTACT INSPECTED THE VEHICLE AND NOTICED A SIX INCH MELTED SPOT ON THE RUBBER NEAR THE FLOORBOARD. AS THE CONTACT DROVE THE VEHICLE, HE NOTICED THAT THE SPOT HAD BECOME LARGER. THE VEHICLE WAS TOWED TO THE DEALER WHERE THE TECHNICIANS WERE UNABLE TO DIAGNOSE THE CAUSE OF THE FIRE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 12,100. THE VIN WAS NOT AVAILABLE.