2007 MERCEDES GL450- TURNED ON SEAT HEATERS AND WITHIN A COUPLE MINUTES SMELT BURNING MATERIAL. DISCOVERED THE SEAT HEATER WAS BURNING A HOLE IN THE LEFT SIDE OF THE DRIVER SEAT BACK. TURNED OFF THE SEAT HEATER BUT IT HAD ALREADY BURNED A HOLE ABOUT THE SIZE OF A DIME. TOOK IT IMMEDIATELY TO THE DEALER WHERE THEY STATED THEY HAVE SEEN THE SAME PROBLEM BEFORE. THEY ARE ORDERING A REPLACEMENT SEAT BACK, BUT ARE NOT WILLING TO ADDRESS MY CONCERNS ABOUT THE OTHER SEAT. *TR