UPON DRIVING MY X3 I TURNED ON MY DRIVERS SIDE SEAT HEATER AND WITHIN A FEW MINUTES IT STARTED GETTING SO HOT THAT IT BEGAN TO BURN THE TOP PART OF MY LEFT LEG. I HAD TO TURN IT OFF AND LIFT MY LEG OFF THE SURFACE OF THE SEAT A BIT UNTIL IT COOLED OFF. IT APPEARS THERE IS A PROBLEM ON THE LEFT SIDE OF THE SEAT (BOLSTER). IT HAPPENS NOW EVERYTIME I ATTEMPT TO USE IT...I HAVE OWNED THIS VEHICLE FROM DAY ONE AND NEVER HAD THIS PROBLEM BEFORE. I HAVE NOT SMELLED ANY BURNING ODORS YET BUT THERE IS A SERIOUS PROBLEM WITH THE SEAT. MY WIFE HAS EXPERIENCED THE SAME THING !...THIS NEEDS TO BE ADDRESSED BY BMW AND CORRECTED BEFORE THERE IS A FIRE OR BODILY INJURY. SO FOR SAFETY REASONS AND PREVENTING BURNS I AM UNABLE TO USE THIS FEATURE I PAID SO DEARLY FOR...I WILL BE CONTACTING THE DEALERSHIP ON MONDAY TO ADVISE THEM OF THIS PROBLEM. *TR