PASSENGER SEAT HAD BEEN FEELING WARMER THAN USUAL FOR A COUPLE MONTHS SO KEPT THE SEAT AT HEAT LEVEL 3 INSTEAD OF 5. IT WAS OK FOR AWHILE BUT THEN BURNED A HOLE THRU THE SEAT AS WELL AS MY JACKET. SMELLED THE BURNING SO I TURNED THE SEAT OFF. TURNING THE SEAT OFF STOPPED THE BURNING. *TR