ON FRIDAY, JANUARY 12, 2018 I FOUNT THE CAR SEAT SEVERELY SMOLDERING ON THE PASSENGER SIDE. THE CARE WAS FILLED WITH BROWN SMOKE AND TOXIC FUMES. THE SEAT WAS COMPLETELY BURNED AND MELTED AND TOXIC RESIDUE. FIRE DEPARTMENT PUT OUT FIRE WITH WATER. CAR SEAT HEATER APPARENTLY DID NOT TURN OFF AND SMOLDERED ALL NIGHT. TOYOTA GIVING ME THE RUN AROUND, DELAYING INVESTIGATION AT LEAST 5 WEEKS OR MORE. THE CAR WAS PARKED IN GARAGE, LAST DRIVEN BRIEF DISTANCE EVENING BEFORE. GARAGE NOW WITH TOXIC FUMES AND RESIDUE. CAR LIKELY TOTALED, AND TOYOTA TRYING TO GET OUT OF ANY ASSISTANCE/RESPONSIBILITY. THEY ARE ON PURPOSE BEING VERY DIFFICULT, AND FORCING ME TO COMPLY WITH THEIR AGENDA, OR LOSE OPTION FOR THEIR TAKING SOME RESPONSIBILITY.