2008 Mercury Mountaineer Transmission and drivetrain Problems
- Complaints
- 9about this part
- Share
- 9%of 96 total for the year
- Median mileage
- 38,319miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the transmission and drivetrain of the 2008 Mercury Mountaineer, 9% of the 96 complaints for this model year. Where a mileage was given, the median is 38,319 miles. 1 of these say a crash was involved, according to the filers. 1 recall campaign on record is filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Takata recall while my vehicle is in motion, & when I stop at a stop light, it's suddenly shuts off. This has happened several times while on the highway at highway speeds, & on city streets at normal speeds. It has proven dangerous several times. When I put the vehicle in reverse, the vehicle jerks very hard. Also when I drive for more than 6 to 7 miles at highway speeds, a tire pressure sensor comes on.”
NHTSA complaint #11196908, filed 2019-04, 129,000 miles“My ford Mountaineer 2008 transmission is erratic and the traction control light comes on when the slipping is taking place. Braking is also erratic as I feel a bumping while braking to a stop. It is very dangerous as it feels like to transmission and brake/traction control system is about to go. I called ford and they have know of the problem since 2006 as the transmission used (6r60) continually needs software updates. …”
NHTSA complaint #10308801, filed 2010-02, 38,319 miles“At 28000 miles the transmission started shifting erratic, the dealer reprogrammed the ECM and covered up the problem until the warrant ended and the battery failed at which time the car reverted back to default and continued to buck and jerk until the car reached highway speed. This continued until the transmission finally failed during operation on the highway on 3/5/20. The ABS module just failed during low speed operation for no apparent reason. Also the car indicated that there is an electrical problem even though all electrical components are in good operational condition. …”
NHTSA complaint #11316784, filed 2020-03, 29,000 miles“My vehicle's warranty is 5 years/60,000 miles. Since this week I have heard a metal scratch noise from the vehicle during driving on the road. I brought my vehicle to ford dealership shop, it is found that rear axle seal has been damaged with oil leakage. Unfortunate, the repair is not covered by warranty because it has been 5 year, although the mileage is only 43500 miles.”
NHTSA complaint #10637615, filed 2014-09“My 2008 Mercury Mountaineer is having a strong transmission kick when down shifting and a squicking noise which I think is coming from the break and my dealer kept on reporting back to me as unable to duplicate the problem. This SUV were bought as brand new and I feel like that the car is going to break apart or loose my break everytime I feel those rattles. Everytime I would go to my dealer for a service, I would always mention about the problem which they can't fix!”
NHTSA complaint #10365945, filed 2010-11Related recalls
- 07V453000Sep 26, 2007On certain sport utility vehicles equipped with the 4.6l engine and 6r transmission, the bolt securing the transmission oil cooler line fittings at the…Covers: Mercury Mountaineer 2008, Ford Explorer 2008, Explorer Sport Trac 2008
Related service bulletins
- 10243490Sep 7, 2023When performing any transmission fluid changes or topoffs involving MERCON SP, MERCON LV has replaced all versions of MERCON SP and can be used going forward. Mixing MERCON LV…
- 10028736May 1, 2009Ford: some vehicles may exhibit oil separation from the internal lube found in the unitized cartridge seal. Oil separation appears to be and is often misdiagnosed, as an axle…
- 10029167Dec 1, 2008Ford/mercury: some vehicles may exhibit various symptoms such as drivability symptoms, including but not limited to no crank with/without blown fuse, and illumination of…
- 10026385Oct 23, 2008Ford/mercury: 4.0l/4.6l hard start/rough running; after long hot soak/dip in rpm when coming to a stop; built on or before 4/2/08. May exhibit a dip in rpm below normal idle…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 2 | 15% |
| 2008 | 9 | 9% |
| 2007 | 25 | 31% |
| 2006 | 39 | 33% |
| 2005 | 19 | 23% |
| 2004 | 64 | 30% |
| 2003 | 42 | 28% |
| 2002 | 144 | 39% |
| 2001 | 1 | 5% |
| 2000 | 15 | 12% |
| 1999 | 8 | 5% |
| 1998 | 9 | 4% |
| 1997 | 8 | 2% |
Other parts of the 2008 Mercury Mountaineer
54 complaintsElectrical system
39 complaintsEngine
6 complaintsExterior lighting
6 complaintsOther or unknown
6 complaintsBrakes
5 complaintsInterior lighting
4 complaintsSeat belts
4 complaintsEngine cooling
3 complaintsFuel system
3 complaintsSteering
3 complaintsBody and structure
3 complaints
← All problems reported for the 2008 Mercury Mountaineer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology