CONSUMER WAS DRIVING APPROXIMATELY 30 MINUTES BEFORE PARKING VEHICLE, IMMEDIATELY AFTER ENGINE WAS TURNED OFF COSUMER BEGAN TO NOTICE SMOKE, FIRST WHITE SMOKE. CONSUMER THEN STARTED ENGINE AND BACKED VEHICLE OUT OF GARAGE. SHORTLY AFTER, FLAMES BEGAN UNDER HOOD. VEHICLE WAS TOWED TO DEALERSHIP. ONE MONTH LATER DEALERSHIP DECIDED TO REPLACE VEHICLE BECAUSE NISSAN COULD NOT FIND A CAUSE FOR FIRE. *AK