TL* THE CONTACT OWNS A 2013 MERCEDES BENZ S350. WHILE DRIVING AT VARIOUS SPEEDS, THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. THE DEALER WAS UNABLE TO DIAGNOSE THE CAUSE OF THE FAILURE. THE ENGINE CAUGHT ON FIRE WHILE THE VEHICLE WAS UNOCCUPIED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.