HEATER CORE FAILED. I HAVE ALWAYS HAD THE CAR SERVICED REGULAR ACCORDING TO MANUFACTURER SPECS. THE COST IS $1000.00 TO REPLACE THE PART. IT FAILED ON A VERY COLD NIGHT TRAVELING THROUGH A WINTER STORM. TRY DRIVING A CAR IN THE MIDDLE OF NO WHERE WITH NO HEAT TO DEFROST THE WINDOWS. WRECKED DUE TO THE INABILITY TO SEE. *TR