2005 Mercury Mountaineer Transmission and drivetrain Problems
- Complaints
- 19about this part
- Share
- 23%of 82 total for the year
- Median mileage
- 48,150miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 19 complaints about the transmission and drivetrain of the 2005 Mercury Mountaineer, 23% of the 82 complaints for this model year. Where a mileage was given, the median is 48,150 miles. 1 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Mercury Mountaineer 05 with less then 60,000 miles, I was told that there was wearing in the valve case from automatic transmission which causes transmission to skip and shift hard and pop forward, I need to have it repaired , transmission place states this is a known problem which has a technical advisory about it....what's my recourse.”
NHTSA complaint #10266473, filed 2009-04, 20,000 miles“Two problems...first whenever I shift into reverse there is a hesitation and it takes longer than it should to reverse. Im also experiencing a jerk before I come to a complete stop. Second ..the back of my lift has a crack from the bottom of the window to the Mercury symbol and then it continues down under the symbol. I've done some research and there re lots of others with these same issues. I only have about 70000 miles on it.”
NHTSA complaint #10496362, filed 2013-02, 69,000 miles“Had warped rotors within first 2,000 miles. Ford would only ground rotors but dealer replaced them at no charge. I have also experienced a loud, thumping noise when I am making a sharp turn to left or right at a very low speed. Also, often when putting car in reverse many times there is a large thump and vehicle appears to shift hard. Finally, when stopped on a steep hill, after removing foot from brake, vehicle rolls backwards many times.”
NHTSA complaint #10150251, filed 2006-02, 100 miles“Automatic transmission- this transmission is horrible a few times I noticed the severe noise and jerk when I went to reverse. I thought perhaps it was me. On christmas eve I went to pull away from stop light and car started to accelerate then slowed down I gave it a little gas and it jerked me so hard it hurt my neck (which is still bothering me today). The od light came on and check transmission. Repair cost $2,7000, basically everything went bad. After hearing from numerous people this is a problem that ford is aware of. …”
NHTSA complaint #10373088, filed 2010-12, 113,000 miles“Transmission lever binds when attempting to shift into park, slipping into reverse instead. Problem has occurred sporadically from 2007 to date. Usually the miss-shift is noticed because it just doesn't feel right, but not always. It can be most dangerous if you don't turn off the engine immediately (after attempting to shift into park) and take your foot off the brake. That has happened to me about 5 times over 5 years. It happened twice at a gas station, once at a car wash, once in a shopping center, and once in front of my house as a child walked behind the car. …”
NHTSA complaint #10342361, filed 2010-07, 8,000 milesRelated service bulletins
- 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…
- 10014100Jan 1, 2006Limited slip axle chatter, shudder, binding sensation, or vibration during low speed turning maneuvers.
- 10018069Sep 1, 2005A tiny crack, or cracks, around the transfer case drain plug hole.
- 10012952Jun 7, 2005Driveline 1st order vibration/boom/drone.
- 10013306May 27, 2005Improperly formulated transmission fluid that, over time, may cause delayed/harsh reverse engagements. Customer satisfaction program 04b22. 5r55s/e & 5r44e transmission fluid…
- 10017898Apr 1, 2005Delayed or harsh reverse engagements - 5r55s transmission - vehicles built prior to 09/23/2004.
- 10017892Apr 1, 2005Rear axle noise repair.
- 10014277Dec 31, 2004Increased effort during low speed sharp turns on 4x4 vehicles.
- 10014086Dec 13, 2004General (pcm) power train control module programming procedures.
- 10013398Nov 15, 2004Gear selector lever - increased effort to shift from drive to park.
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 2005 Mercury Mountaineer
26 complaintsVehicle speed control
13 complaintsEngine
7 complaintsBrakes
5 complaintsElectrical system
5 complaintsEngine cooling
5 complaintsSteering
5 complaintsOther or unknown
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsAir bags
3 complaintsFuel system
3 complaintsEquipment
2 complaints
← All problems reported for the 2005 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