TL* THE CONTACT OWNS A 2007 MERCEDES-BENZ R350. WHILE OPERATING THE VEHICLE, A BURNING ODOR WAS PRESENT INSIDE THE VEHICLE. THE DRIVER LATER NOTICED THAT THE DRIVER SIDE LUMBAR AREA OF THE FRONT DRIVER SEAT BECAME EXTREMELY HOT AND BURNED THROUGH THE LEATHER SEAT AND THE CLOTHING WORN BY THE DRIVER. THERE WERE NO INJURIES. THE CAUSE OF THE FAILURE WAS NOT DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 104,000.