AT APPROXIMATELY 9:35 PM, NOVEMBER 29, 2007, I ENTERED MY 2003 VW PASSAT AND STARTED THE ENGINE. THE AIR TEMPERATURE SHOWED 39 DEGREESF SO I SWITCHED ON THE CONTROL FOR THE HEATED SEAT ON THE DRIVER'S SIDE TO HIGH. APPROXIMATELY 10 MINUTES AFTER STARTING THE CAR IT SMELLED LIKE SOMETHING WAS BURNING. I AM A NON-SMOKER. IT BECAME APPARENT THAT THE SMELL WAS FROM INSIDE THE CAR AND I BEGAN TO EVALUATE POSSIBLE SOURCES FOR A FIRE SINCE THE SMELL SEEMED TOO CLOSE TO BE COMING FROM THE ENGINE COMPARTMENT. I BEGAN TO FEEL AROUND THE SEAT SINCE I KNEW THE SEAT WARMER WAS ON AND SUDDENLY REALIZED THAT AN AREA UNDER MY LEFT THIGH WAS HOT. FURTHER INVESTIGATION, WITH MY HAND, REVEALED THAT MY COAT FELT BURNED OR MELTED AND THE SEAT WAS EXTREMELY HOT TO THE TOUCH. I IMMEDIATELY TURNED OFF THE SEAT HEATER. THE AREA SEEMED TO COOL OFF SLIGHTLY SO I CONTINUED HOME - ABOUT A 10 MINUTE DRIVE. AFTER ARRIVING HOME I CHECKED THE SEAT AND MY COAT. THE SEAT WAS STILL WARM TO THE TOUCH 25 MINUTES AFTER THE SWITCH HAD BEEN TURNED OFF. THERE IS A HOLE IN THE LEATHER SEAT APPROXIMATELY 0.5 INCHES IN DIAMETER, WITH FLECKS OF BLACK SOOT AROUND THE EDGES, ABOUT 4.75 INCHES FROM THE BACK OF THE SEAT AND 2.5 INCHES IN FROM THE LEFT SIDE OF THE SEAT. MY COAT HAS AN AREA APPROXIMATELY 0.5 INCHES IN DIAMETER THAT IS EITHER MELTED OR THE SEAT IS MELTED ONTO MY COAT. THE INCIDENT WILL BE REPORTED TO THE LOCAL VOLKSWAGEN DEALER ON 30 NOVEMBER 2007. *TR