TL* THE CONTACT OWNS A 2007 MERCEDES-BENZ R350. WHILE DRIVING APPROXIMATELY 20 MPH, THE INSIDE OF THE VEHICLE FILLED WITH SMOKE. THE CONTACT NOTICED THAT THE DRIVER'S SEAT CAUGHT FIRE. THE CONTACT STATED THAT THE SEAT WARMER WAS ACTIVATED AND, ONCE THE SEAT WARMER WAS DEACTIVATED, THE FIRE EXTINGUISHED INDEPENDENTLY. THERE WERE NO INJURIES. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 90,000.