There are 3 owner-reported lighting complaints for the 2000 Mercury Mountaineerin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2000 MERCURY MOUNTAINEER. WHILE DRIVING, THE HEADLIGHTS GRADUALLY BECAME DIM AND SHUT OFF. AFTER THE CONTACT MADE SEVERAL ATTEMPTS, THE HEADLIGHTS TURNED BACK ON AND REMAINED ILLUMINATED. THE MANUFACTURER WAS CONTACTED AND STATED THAT THERE WERE NO RECALLS FOR THE FAILURE. THE CONTACT WAS REFERRED TO NHTSA. THE DEALER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 82,000.
BRAKE LIGHTS WERE NOT LIGHTING. FUSE WAS BLOWN, REPLACED FUSE, STEPPED ON BRAKE PEDAL, THEN POOF OF SMOKE AT FUSE INSIDE, AND UNDER HOOD SMOKE CONTINUED FOR 2 MINUTES. FOUND CONNECTOR FOR SWITCH ON MASTER CYLINDER WAS MELTED AND SWITCH IS STILL BAD. DISCONNECTED CONNECTOR FROM SHORTED SWITCH CAUSING FUSE TO BLOW. THEN REPLACED FUSE AND NOW BRAKE LIGHTS WORK. CRUISE CONTROL WAS INTERMITTENT FOR THE PAST 2 MONTHS PRIOR TO THIS EVENT. CONNECTOR IS TIED TO KEEP IT SECURE UNTIL REPAIR IS MADE. *TR
THE TURN SIGNAL CURVES DOWNWARD AND CONACTS THE DRIVER'S LEFT KNEE TURNING THE RIGHT TURN SIGNAL OFF DUE TO POOR DESIGN OF THE LEVERS. YH
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026