The contact owns a 2007 BMW X3. The contact stated that while the heated seat was in the on position the driver's side seat became extremely hot and caught fire. The fire burnt through the seat and left a hole. There were no reported injuries. The driver was able to extinguish the fire. The contact called the local dealer and left a message but, the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The approximate failure mileage was 180,000.