2003 Mercury Mountaineer Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Mercury Mountaineer
Verified by mechanics, reported by drivers like you
Ask a mechanic in our community
Never overpay. Check prices with our estimator
2003 Mercury Mountaineer ProblemsProblems With 5-speed Automatic Transmission are Common
Various problems with the 5-speed automatic transmission were common. These problems can be more common on the 2002 models with build dates before March, 2002. There are many service bulletins describing the diagnoses and repairs, which include fluid leak repairs, transmission software updates, or internal failures requiring a costly repair.
A cosmetic crack may develop on the plastic liftgate trim panel. Our technicians tell us the Ford has released a service procedure to replace the applique without damage the the liftgate glass.
The composite (plastic) intake manifold may crack near the thermostat housing and cause a coolant leak. Ford released an updated manifold that was reinforced to prevent a recurrence. No recall was issued for this problem but Ford did extend the warranty to seven years on some models from the date of purchase.
2003 Mercury Mountaineer QuestionsMy ABS light is on (1 answer)
2003 Mercury Mountaineer RecallsFord Recalls 2002-2003 Ford Explorer and Mercury Mountaineer Vehicles for Liftgate Glass
Ford has recalled certain 2002-2003 model year Explorer and Mercury Mountaineer vehicles for possible issues with the liftgate glass strut brackets and glass hinges. On certain vehicles, the liftgate glass strut may come off or the hinge may fracture. This can cause the glass to fall from the liftgate, which may lead to personal injury. Dealers will replace the liftgate glass strut brackets and glass hinges.