AFTER ARRIVING HOME FROM A 5 MILE TRIP, AFTER ABOUT 15 MINUTES OF DRIVING, PULLED IN DRIVEWAY, TURNED OFF VEHICLE, SAW SMOKE COMING FROM BUTTON ON AC UNIT WHICH CONTROLS THE SPEED OF AIRFLOW FOR THE AC. THE SMOKE INCREASED, SMELLED OF CHEMICALS AND WAS CLEARLY AN ELECTRICAL FIRE BURNING THROUGH AC KNOB. FIRE DEPARTMENT WAS CALLED. DASH REMOVED. FIRE WAS RECREATED BY FIREMAN TWICE. AC FUSES WERE DISCONNECTED FROM BATTERY BY FIREMAN. VAN WAS TOWED BY AAA TO DODGE DEALERSHIP FOR FURTHER INSPECTION/REPAIR. RENTAL CAR WAS PROVIDED BY DODGE AND COVERED FOR 5 DAYS. TODAY IS THE 5TH DAY AND DODGE IS STILL WORKING ON CAR. *TR