I LEFT HOME AND TURNED ON THE SEAT HEATER FOR THE DRIVER SEAT. IN JUST A FEW SECONDS I FELT DISCOMFORT IN MY LEFT BUTTOCK. I REPOSITIONED THINKING SOMETHING WAS PINCHING ME AND THEN SMELLED SOMETHING BURNING. I WAS ABLE TO PULL OFF THE ROADWAY AND GET OUT OF THE CAR. I SAW THE SEAT BOTTOM SCORCHING AND IMMEDIATELY TURNED OFF THE SEAT HEATER. NO FURTHER DAMAGE WAS NOTED, BUT NOW AFRAID TO USE EITHER SEAT HEATER. *TR