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Mercury Mountaineer Problems

Find the most common issues based on Mercury Mountaineer owner complaints.
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Most Common Mercury Mountaineer Problems

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.
A failed heater blend door or actuator can cause the temperature control for the HVAC system to stop working. A clicking sound from the dash area would commonly indicate an actuator fault. If the h...
The Mercury Mountaineer 4.6L V8 model is known for engine overheating, even with normal use, and a coolant leak from the front of the manifold. This will often trigger the check engine light and lo...
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1 Known Mercury Mountaineer Brakes Problem

4wd vehicles may develop a squealing noise coming from the front wheels when driving below 30 mph. This is generally caused by dry excluder seals, lubricating the seals will commonly correct this c...

1 Known Mercury Mountaineer Drive Train Problem

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 desc...

1 Known Mercury Mountaineer Electrical & Lights Problem

The Mercury Mountaineer 4.6L V8 model is known for engine overheating, even with normal use, and a coolant leak from the front of the manifold. This will often trigger the check engine light and lo...

6 Known Mercury Mountaineer Engine Problems

A rattling noise from the engine may indicate that the timing chain cassette is worn. Our technicians tell us that installing an updated cassette and timing chain tensioner should correct this conc...
A coolant leak may develop from the radiator. Ford has released and updated radiator and powertrain control module (PCM) software update to address this issue. The software update includes revised...
The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the Check Engine Light will illuminate.

0 Known Mercury Mountaineer Exhaust & Emissions Problems

1 Known Mercury Mountaineer Heating & Air Conditioning Problem

A failed heater blend door or actuator can cause the temperature control for the HVAC system to stop working. A clicking sound from the dash area would commonly indicate an actuator fault. If the h...

0 Known Mercury Mountaineer Maintenance Problems

3 Known Mercury Mountaineer Miscellaneous Problems

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 rear wiper may stop working. This could be due to a rear wiper motor that has failed requiring replacement.
The rear window wiper may not fully contact the rear window. To fix, replacement of both the wiper blade and wiper arm is necessary.

0 Known Mercury Mountaineer Suspension & Steering Problems

18
Known Mercury Mountaineer Problems & Complaints

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.
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 desc...
A failed heater blend door or actuator can cause the temperature control for the HVAC system to stop working. A clicking sound from the dash area would commonly indicate an actuator fault. If the h...
A rattling noise from the engine may indicate that the timing chain cassette is worn. Our technicians tell us that installing an updated cassette and timing chain tensioner should correct this conc...
The 4.6L V8 engine used in the Mercury Mountaineer from 2002-2010 is known for displaying the normal symptoms of a coolant leak, including overheating, especially when the vehicle is idling, the st...
A coolant leak may develop from the radiator. Ford has released and updated radiator and powertrain control module (PCM) software update to address this issue. The software update includes revised...
The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the Check Engine Light will illuminate.
The Check Engine Light will illuminate and the engine will idle roughly when cold. There are updated upper intake manifold gaskets to resolve the problem.
The Mercury Mountaineer 4.6L V8 model is known for engine overheating, even with normal use, and a coolant leak from the front of the manifold. This will often trigger the check engine light and lo...
Spark plugs in the Mercury Mountaineer can be very difficult to remove. Ford has issued a service bulletin (08-7-6) to address this issue, which includes a recommended procedure on how to remov...
4wd vehicles may develop a squealing noise coming from the front wheels when driving below 30 mph. This is generally caused by dry excluder seals, lubricating the seals will commonly correct this c...
The rear wiper may stop working. This could be due to a rear wiper motor that has failed requiring replacement.
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