THE HEATED SEAT ON THE DRIVERS SIDE OF MY 2002 VW JETTA BEGAN TO SMOLDER AT THE "3" SETTING WHILE I WAS WARMING THE CAR UP. IT EVENTUALLY BURNT A HOLE IN THE LEFT SEAT BOLSTER APPROXIMATELY" BY " IN SIZE. USUALLY I TURN THE SEAT HEATER ON WHILE I AM DEFROSTING THE WINDSHIELD IN THE DRIVEWAY. WITHOUT SOMEONE IN THE CAR IT COULD HAVE CAUGHT ON FIRE AND EITHER DESTROYED THE CAR OR CAUSED MAJOR DAMAGE TO THE INTERIOR.*AK