PASSENGER SIDE SEAT HEATER MALFUNCTIONED. SEAT HEATER TURNED ON TO LEVEL 3. PASSENGER AND DRIVER NOTICED SMELL OF SOMETHING BURNING, THEN PASSENGER FELT PAIN UNDER LEFT THIGH. TURNED SEAT HEATER OFF. WHEN STOPPED, EXAMINED SEAT TO DISCOVER BROWN HOLE IN SEAT WHERE HEATER HAD BURNED THROUGH. NO REPAIRS HAVE BEEN MADE YET. *NM