TL- THE CONTACT OWNS A 2003 VOLKSWAGEN JETTA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 20 MPH A BURNING PLASTIC ODOR WAS PRESENT INSIDE THE VEHICLE BEFORE THE PASSENGER SUDDENLY EXPERIENCED A BURNING SENSATION COMING FROM THE SEATED AREA OF THE PASSENGER SEAT. THE CONTACT INDICATED THAT THE PASSENGER SIDE SEAT HEATER ELEMENT HAD OVER HEATED CAUSING A BURN HOLE IN THE SEAT AND CAUSING A MINOR BURN TO THE PASSENGER. THE CONTACT STATED THAT A SMALL FLAMED TO THE PASSENGERS RIGHT PANT LEG HAD TO BE EXTINGUISHED DURING THE INCIDENT AND THE PASSENGER SEAT BURN HOLE MEASURED APPROXIMATELY 1 INCH IN DIAMETER. THE VEHICLE WAS DIAGNOSED AT THE DEALER. THE CONTACT WAS INFORMED THAT THE DEFECT WAS CAUSED BY A FAULTY HEAT ELEMENT INSIDE THE SEAT. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED BUT NO SOLUTION WAS OFFERED. THE FAILURE MILEAGE WAS 125,000. JFT