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ProblemsByVin Index / 2005-MERCURY-MOUNTAINEER / COMPLAINTS
Full complaint record · NHTSA

2005 Mercury Mountaineer owner complaints

82 complaints filed with NHTSA on this vehicle , including 1 reporting a crash, fire, injury, or fatality. Showing the 300 most recent — grouped by category for scanning.

powertrain 4 complaints shown

18 total in this category · severe · avg repair $2,500 · see powertrain cluster analysis →
12/28/2010 113,000 mi ODI #10373088.0

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. They even went so far as to correct it for future models but has yet to perform a recall on 2005 mountaineers and explorers. As Ford was aware of this problem corrected it for future models they should be liable and a recall notice should be forthcoming. Anyone

11/28/2007 ODI #10210250.0

Rear differential needs replaced. Mechanic said can be dangerous. I see that these Ford/mercury's have this problem all the time. Cost too much to fix, yet I have wife and kids in that car. *tr

10/14/2010 60,562 mi ODI #10360402.0

2005 mercury mountaineer transmission jerks random intervals and causes driver to loose control of vehicle momentarily. Passengers inside car experience neck pain after several occurrences. *tr

10/10/2015 128,000 mi ODI #10781265.0

While driving 50 MPH vehicle stalled three times. Took it to a garage, was told it was necessary to have the vehicle when it stalled. Found eleven (11) similar complaints on your site! Perhaps there is some validity to the complaints. All parts of the vehicle related to safe driving were rendered useless. Sounds like a safety issue to me!

body 3 complaints shown

21 total in this category · moderate · avg repair $1,500 · see body cluster analysis →
12/31/2018 100,000 mi ODI #11164258.0

Tl* the contact owns a 2005 mercury mountaineer. The contact stated that the rear hatchback panel was cracked in several locations. There were no warning indicators illuminated. The contact called the local dealer (five star Ford, 6618 ne loop 820 at rufe snow, north richland hills, tx 76180-7844, 817-500-0097) and was informed that they could not repair the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the local dealer. The failure mileage was 100,000.

12/12/2014 121,000 mi ODI #10664014.0

When I closed my hatch on the back of my mercury mountaineer that there was a crack. Also I have noticed it on other vehicle's like mine and Ford explorer's. And I don't think it should that especially on two different kinds of vehicles and on alot of them almost everyone I get behind is like that. *tr

10/25/2011 72,000 mi ODI #10432804.0

Tl* the contact owns a 2005 mercury mountaineer. The contact stated that the lift gate panel was cracked. The vehicle was not taken to the dealer. The manufacturer was not made aware of the failure and the vehicle was not repaired. The failure and current mileage was 72,000. The VIN was not available.

cruise control 3 complaints shown

11 total in this category · severe · avg repair $600 · see cruise control cluster analysis →
12/26/2010 48,549 mi ODI #10372452.0

2005 mercury mountaineer cruise control emergency while driving my wife's 2005 mercury mountaineer at approximately 50 MPH and using the cruise control the engine shut off. (dangerous and scary) I immediately placed the engine in neutral and restarted it with no trouble. Fortunately we were on a straight road. The engine shut down appeared to occur because the cruise control de-accelerated the engine while coasting down hill (using the cruise control) to below 400 RPM's. Below 400 RPM's the engine stops. The car speed, length of the downward coast, and hill slope appeared to affect the stoppage. If the speed control signals an increase prior to bottoming the RPM's the engine will continue to run, if not it will shut off loosing oil pressure, power steering, and power brakes. My

11/08/2018 136,200 mi ODI #11150051.0

I purchased a used 2005 mercury mountaineer last month, with 135,400 miles, while using cruise control and traveling approximately 35 MPH, the road went from level to a very slight downgrade. The car then just shut off after audible warning bell was heard. Noticed dashboard lights were all lit and battery gage was normal. I lost power steering, brakes and oil pressure. After pulling safely to the side of the road, I rested for 30 seconds before restarting the car, which subsequently operated normally. After taking it in for an oil change and safety check, I went on a 450 mile weekend trip and had no issues, restricting cruise control to highway speeds. The other day, I was traveling on a different stretch of level road in my town while using cruise control at approx. 35 MPH. After heading

10/19/2005 1,050 mi Crash ODI #10140188.0

Purchased a new 2005 mercury mountaineer in 7/31/2005 the first time the car accelerated when the brakes were applied and the car had to be put in neutral to stop. The dealer reported that there were no known fixes for this problem at this time. The second time while pulling into my driveway when the brakes were applied the car accelerated and crash into my garage door. This time the dealer blamed my wife and said she must have pressed the gas and brake peddles at the same time. The car sustained front end body damage and my garage door needs to be replaced. The car has been at the dealer since the accident happened and we are still waiting to find out what is Ford's determination of this issue and what they will do to get us out of this car and into something else. *nm

engine 3 complaints shown

8 total in this category · moderate · avg repair $3,100 · see engine cluster analysis →
12/21/2016 90,000 mi ODI #10936824.0

On two occasions the engine cut out while driving the car, all the engine warning lights came on. Once the car was safely off the road and placed in park it would start and continue to operate. The Ford dealer said that there was not fault code in the computer, they could not duplicate the failure and could not find any fault in the engine system. Ford service representatives said I should go a different Ford dealer and see if they could solve the problem. I find similar engine failures documented on the internet for this generation of car. More current similar model are not reported to have this problem. Thus I assume Ford found and fixed this problem. I asked them to tell me how they solved the problem, they said that was not possible. So, I have an otherwise good car which I can do

12/12/2007 12,327 mi ODI #10211539.0

Tl*the contact owns a 2005 mercury mountaineer. While driving 35 MPH, the vehicle stalled and the engine shut off. This has occurred three times since 2006. The failure is most common while driving down an incline and when the cruise control was activated. The check engine light was illuminated and the power steering does not operate normally. The vehicle restarted after ten to fifteen minutes. The failures occurred on december 18, 2006, january 19, 2007, and december 4, 2007. On each date, the dealer diagnosed the failure for thirty days and stated that they were unable to diagnose the cause of the failure. The dealer advised her to deactivate the cruise control and make sure there is enough fuel in the tank. The mechanic stated that if the failure recurred, the vehicle should be

10/21/2014 141,000 mi ODI #10649043.0

As I was driving the vehicle just died; all the warning lights came on and as I was losing speed I pulled over to curb the best I could. Restarted car and it seemed to run fine but happened again 20 minutes later. This has also happened 2 other times within the last 10,000 miles of driving. *tr

visibility 3 complaints shown

4 total in this category · moderate · avg repair $350 · see visibility cluster analysis →
12/21/2015 159,000 mi ODI #10811372.0

"takata recall" purchased the vehicle with 158,000 miles on it. Owned for one month. Barely driving even 12 miles a day as I have been laid off from job. Vehicle was parked in driveway, sitting. Opened the rear lift gate to retrieve groceries and closed gate. Rear window blew out into a million pieces with the center piece that is plastic? Twisted as well. Did notice crack in panel near the emblem shortly after the purchase of vehicle and I thought that the prior owner may have backed into something , although there was no dent or paint marked up near the crack, so I was stumped as to how it got that way). After inquiring on the internet, I found several complaints about the lift gate panel and glass falling out. I had sealed the crack with clear silicone just a week after purchasing

12/06/2013 66,105 mi ODI #10555044.0

Tl* the contact owns a 2005 mercury mountaineer. The contact stated that there was a heating failure and an abnormal noise emitted from the heating unit when activated. The vehicle was taken to the dealer where the heat temperature actuator was replaced however, the failure recurred. The manufacturer was made aware of the failure. The vehicle was not further repaired. The failure mileage was 66,105 and the current mileage was 98,000. Updated 3/5/14*cn *tr

10/20/2014 130,000 mi ODI #10648779.0

Tl* the contact owns a 2005 mercury mountaineer. The contact stated that the lift gate hinge on the driver's side failed to keep the glass up. The vehicle was taken to a dealer and both lift gate glass hinges were replaced. The contact was made aware of recall NHTSA campaign number: 01i010000 (visibility). However, the vehicle was not included. The manufacturer was notified of the failure. The approximate failure mileage was 130,000.

other 2 complaints shown

12/08/2008 20,000 mi ODI #10251108.0

Vehicle paint peeling from front hood. Mercury dealer (northgate Lincoln mercury, tampa, florida) at first said a rock hit it. Another service person said its a defect. They only want to cover half the cost of getting hood painted. Vehicle bought new from the dealer. Tsb issued by Ford concerning the issue. Dealer overestimated estimate to repaint hood ($1000 dollars) wants me to pay a lost $500 dollars for a defect they know about.*tr

12/08/2006 29,500 mi ODI #10175567.0

Dt*: the contact stated while driving 25 MPH, a noise was heard and the automatic stability control light illuminated on the dash and the vehicle pulled to the right. It was maneuvered off the road and restarted however, the dash light continued to illuminate. The vehicle was driven to the dealer who could not identify the problem.

electrical 1 complaint shown

4 total in this category · severe · avg repair $850 · see electrical cluster analysis →
12/11/2010 158,000 mi ODI #10369966.0

My 2005 mercury mountaineer loses power for no reason. This is the fourth time this has happened. It was been to the dealer multiple times and they cannot find a problem. There is nothing to foresee when it happens, the only consistency has been that luckily I have been on local roads doing no more than 35 miles per hour or so. First battery light and service engine comes on as the engine stops, then low oil. The car does not seize up, I can steer to the side of the road. If I put it back in park. Turn the ignition off, and then restart it is fine. There is considerable length of time between occurrences (months if not close to a year this time.) *tr

fuel system 1 complaint shown

11/20/2008 74,045 mi ODI #10249428.0

Leaking evaporative emission fuel tube, that runs across the top of the gas tank, vehicle could have caught fire. *tr

Showing 300 of 82 total complaints. The full federal record is available at nhtsa.gov/vehicle/2005/Mercury/Mountaineer#complaints.
Source: National Highway Traffic Safety Administration (NHTSA) owner complaint database. Last synced 2026-06-28. Complaints are owner-submitted and unverified — the existence of a complaint is not proof of a defect, but a pattern of complaints around the same component is a signal worth weighing. Verify any specific filing at nhtsa.gov.
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