I DRIVE 90 MILES BEFORE I PARKED THE CAR IN MY GARAGE. AFTER A MINUTE OF TURNING OFF THE CAR, I NOTICED BRIGHT SPARKS AND DENSE SMOKE FROM UNDER THE DRIVER'S SEAT. I WAS ABLE TO PUT DOWN THE FIRE AFTER DUMPING A LOT OF WATER UNDER THE SEAT. AT THAT TIME THE POWER SEATS WERE FUNCTIONAL BUT HEATED SEAT WAS NOT. I TRIED TO REPRODUCE THE ISSUE BY STARTING THE CAR AND TURNING IT OFF MULTIPLE TIMES BUT IT DID NOT HAPPEN AGAIN. I LEFT THE CAR OUTSIDE THE GARAGE OVERNIGHT AND TOOK IT TO THE DEALER THE FOLLOWING MORNING, WHERE THE DEALER FOUND THE ELECTRIC WIRING HARNESS BURNT OUT. 1. ISSUE HAPPENED AFTER A MINUTE OF TURNING OFF THE CAR. 2. BRIGHT SPARKS AND FLAMES WITH VERY DENSE CAUSTIC SMELLING SMOKE. *TR