Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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NHTSA — Power Train: Automatic Transmission Problems

2006 Mercury Mountaineer (Page 1 of 2)


really awful
Crashes / Fires:
2 / 1
Injuries / Deaths:
1 / 0
Average Mileage:
34,580 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Mercury Mountaineer transmission problems

transmission problem

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2006 Mercury Mountaineer Owner Comments (Page 1 of 2)

problem #23

Apr 112011


  • 52,000 miles


The contact owns a 2006 Mercury Mountaineer. The contact stated that the vehicle would lunge backwards when driving in reverse. The vehicle was taken to the dealer but the dealer was unable to diagnose the cause of failure. The manufacturer was not notified of the issue. The vehicle was not repaired. The failure mileage was 52,000 and the current mileage was 55,000.

- Tinton Falls, NJ, USA

problem #22

Jan 012011


  • 62,000 miles
The contact owns a 2006 Mercury Mountaineer. The contact stated that when the gear was shifted from drive to park the vehicle did not move. She took the vehicle to the dealer who stated that the shift solenoid needed to be replaced and the transmission flushed. The dealer performed the repairs and the following day the vehicle began to experience the same failure. The vehicle also made a loud thumping noise while shifting into reverse. The contact took the vehicle back to the dealer and was waiting for them to complete the diagnostic test. The was concerned since the failure was a major safety issue that needed to be addressed. The failure mileage was 62,000.

- Bronx, NY, USA

problem #21

Jan 032011

Mountaineer 4WD 6-cyl

  • 62,000 miles
My car is 2006 Mercury Mountaineer in 2007 already the shift had to be replaced as it continually got stuck. One dealer told me the shift needed to changed yet again and now when the car is taken out of park into any gear it wont move it takes about 25 mins to actually put into gear. The dealer said it was a shift solenoid I had it replaced a transmission flush and reprogram and still the same problem the car only has 62,000 miles.

- Bronx, NY, USA

problem #20

Jul 122010

Mountaineer 8-cyl

  • 43,500 miles


2006 Mercury Mountaineer V8 AWD--when shifting from park to drive or reverse it "clunks" hard into gear. The wrench symbol and the engine symbol light up. The vehicle also drives hard as if it isn't changing gears. The dealership will only say that the Ford tsb recommends replacing the transmission fluid and filter, then resealing with foam seal first but refuses to give me an actual diagnosis of what is going on with the car. They can not tell me the real problem and insist that we will have to work through the various steps on the Ford tsbs which may or may not work (by their own admission) and the cost of final repairs is completely open ended. When I questioned what we would try next after the transmission fluid/filter replacement (because I was skeptical about this causing the issue on a vehicle with only 43,000 miles) they had no answers at all. We have owned this vehicle less than a year. An internet search reveals that this is a major ongoing problem with this model but Ford refuses to own up to it. There needs to be a recall.

- Owosso, MI, USA

problem #19

Jul 062010


  • 56,000 miles
2006 Mercury Mountaineer shifts hard when going into reverse, and is also starting to shift hard from 2nd to 3rd gear. Have heard from many there people with 2006 Ford Explorer that there is a manufacturer defect in the transmission. Have had chip reprogrammed at dealership (was charged) and also had transmission flushed and it is actually worse now. My Mountaineer has 58,000 miles on this and has been doing this for the past 2,000 miles. Ford should fix this issue.

- Eagle, WI, USA

problem #18

Nov 142009


  • 115,584 miles
My truck has 115,000 miles on it, transmission is now gone. When I put it in reverse it would jerk back like the it was being hit, all of sudden it started dragging while driving, and having problems shifting into gear, and now its totally gone...only had the vehicle two years.

- Landisville, NJ, USA

problem #17

Nov 092009

Mountaineer 8-cyl

  • miles


V8 Mountaineer jolts when you come to stop, feels like it has been rear ended, no accidents at this point, but there has been a few close calls.

- London, 00, USA

problem #16

Nov 032009


  • 20,000 miles
2006 Mercury Mountaineer transmission problems. Hesitation, funny shifting. Could get someone in trouble by the random shifting problem. Ford dealer I went to said they had never heard of the problem. When you google this it is a problem thanks

- Springfield, NE, USA

problem #15

Sep 042009


  • 60,650 miles
My car has had a continuing problem with the transmission. It shifts roughly and lurches when beginning to move. For example, when stopped at a stoplight, and then beginning to drive, it will lurch, jolting the passengers. Our driveway is sloped toward the street. When I park the car, I always set the emergency brake as well. The car always rolls a few inches before the brakes lock, even though it is stopped and in park. On Sep. 4, 2009, my mother borrowed my car to go to lunch. She couldn't find the emergency brake release. She put the car in park and got out to locate the emergency brake. She found it and released it. The car popped into reverse and rolled backwards to the street. The door knocked my mother down and she hit her head hard enough to sustain a closed head injury with minor bleeding in her brain. The car rolled across the street, over the curb and hit a neighbor's poplar tree. The entire tailgate was destroyed, there was some interior damage and the frame was warped. The tailgate had to be replaced, the bumper and trailer hitch had to be repaired and the frame straightened. My mother was in hospital overnight and had to have two ct-scans. She still has headaches and transient dizziness. We are just fortunate the car didn't run her over, hit a pedestrian (there are a lot of walkers in our neighborhood), hit a car or a neighbor's house.

- Roy, UT, USA

problem #14

May 242009


  • 50,000 miles
2006 Mercury Mountaineer slipped out of parked in driveway and hit mother inlaws 2005 GMC Envoy. This is one of a hand full of times it has slipped off park. Took it to the dealership 3 times and nothing, now I am fighting with grand ledge Ford, grand ledge, mi to get it fix or replace the transmission before someone get seriously hurt or even dies. This is a very scary situation and needs to be recalled as soon as possible.

- Grand Ledge, MI, USA

problem #13

May 142009


  • 71,000 miles


Had to replace two radiators within 30,000 miles of replacement. Exactly how many complaints, or should I say deaths (?) are needed to trigger an investigation of a company gladly receiving assistance while outputting inferior vehicles. No vehicle manufactured in 2006 should need three new radiators within 3 year and 70K miles. Stop letting Ford off the hook and get serious about getting to the bottom of their issues. Just do a search on 2006 Mercury Mountaineer and you will clearly see there are issues with the cooling as well as the automatic transmission. In fact, our model has the same issue that others have reported with the automatic transmission and it will sometimes no moves gears, slip a gear, and tug like it is pulling out of mud at a stop light. Open a full blown investigation into their lack of quality control and the lack of professionalism on the part of the dealerships for not reporting this to corporate.

- Euless, TX, USA

problem #12

Dec 212008

Mountaineer 8-cyl

  • 20,784 miles
I have just purchased a used 2006 Mercury Mountaineer AWD V8. When the vehicle is coming to a stop, the transmission lunges forward as it is downshifting. It feels just like another vehicle has hit my vehicle from behind. This is a dangerous situation since as the vehicle lunges forward, it could hit a pedestrian in a cross walk or hit another vehicle in front of me.

- New Berlin, WI, USA

problem #11

Apr 232008


  • 23,000 miles
When I stop my tranny kicks and it feels like I got hit in the rear. I took it too fm dealer and they adjusted the comp, but didn't fix the prob. It got worse.

- Mineral Wells, TX, USA

problem #10

Oct 182008


  • 66,900 miles
My 2006 Mountaineer has transmission problems. While coming to a stop at a light there is a loud "pop" or thud like noise as if the transmission is popping into place. Also transmission slips when going forward. It jerks especially at low speeds such as pulling out of a parking space. There is definitely something wrong with the transmission. Poor design or manufacturing but definitely something is wrong. You feel like you have been struck from behind when the popping/thud noise occurs at a light. Very unsettling. Also car lurches forward when pulling off from a standing position such as at a light and you feel like your going to hit the car in front of you.

- Wayne, MI, USA

problem #9

Sep 022008


  • 38,000 miles
I own a 2006 Mercury Mountaineer (V8 AWD). Everytime I stop the transmission jolts forward as if we have been involved in a rear-end collision. I have called Ford Motor Company to complain and they have agreed that there is a problem but not to the degree that they would initiate a recall. This is very dangerous and someone is eventually going to get hurt if not killed.

- Largo, FL, USA

problem #8

Aug 012007

Mountaineer 8-cyl

  • Automatic transmission
  • miles
2006 Mercury Mountaineer has transmission problems. Consumer states that his vehicle has been service several times but the problem is not fixed. The consumer stated the transmission would slip, most noticeably in frigid temperatures.

- Newark, NJ, USA

problem #7

May 012008


  • 26,000 miles
2006 Mercury Mountaineer. The transmission has problems. It punches in and out of gears, makes a loud grinding noise and pulls the car to the left. It has problems going into reverse. It does not happen all the time but I would say about 3 to 4 times a week. It is not safe to drive when the car does this. I am driving my 1 year old in this car and I have to concentrate so hard to make the car go straight and to put minimal pressure on the gas pedal so it doesn't jerk us too hard. It is at the dealership now and from what I have read online they will try to put a bandaid on the problem until the warranty runs out! this car only has 26,000 miles on it! I just bought it used about 8 months ago.

- Baltimore, MD, USA

problem #6

Jun 062007

Mountaineer 8-cyl

  • Automatic transmission
  • 6,000 miles
Bought this Mercury Mountaineer March 2007. Worse vehicle ever owned. Most of the time when stopping I get that thud noise. I feel like I got hit from the behind. When in traffic I worry alot also. I bought this truck in 7 times and problem still occurs. Dealership will not fix it until I show them the problem. I told them it does not happen everyday. With my luck it did not happen when I was there.

- Bay Shore, NY, USA

problem #5

Aug 012007

Mountaineer 8-cyl

  • Automatic transmission
  • 11,000 miles
Transmission kicks from 2nd gear to 1st gear when coming to a stop. It is intermittent and jarring to the vehicle and passengers. The vehicle was taken in for repair to an authorized dealership. The transmission fluid was changed and the computer was reflashed, however the problem with the shift shock continues.

- Fort Lauderdale, FL, USA

problem #4

Aug 122007

Mountaineer 8-cyl

  • Automatic transmission
  • 411 miles
The contact owns a 2006 Mercury Mountaineer. The contact started the vehicle and it immediately stalled. The vehicle was towed to a local dealer and they stated that the entire computer system failed and was replaced. Two months later, the engine light illuminated. She took the vehicle to the dealer and they stated that there was emission failure. The contact also began experiencing failures with the front passenger window and the frame was replaced. The engine light still continued to illuminate and the dealer stated that it was due to the catalytic converter, in addition to the transmission. The dealer did not know how to repair the failures. The current mileage was 1,500 and failure mileage was 411.

- Hudson, NH, USA

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