The contact owns a 2010 Mercury Mountaineer. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the computer had provided an incorrect error code. The vehicle was also diagnosed by an authorized Ford tech who confirmed the failure with the computer. The manufacturer was contacted and informed of the failure. The manufacturer referred the contact to the federal safety agency to file a complaint. The vehicle was not repaired. The approximate failure mileage was 109,000.
The worst 2010 Mercury Mountaineer problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes5
- Acceleration4
- Engine3
- Fuel system2
- Steering2
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes5
- Acceleration4
- Engine3
- Fuel system2
- Steering2
- Transmission2
- Body1
- Electrical1
- Lights1
- Seat belts1
- Seats1
Recalls 1
Seats: front assembly: recliner
- What is wrong
- Ford is recalling certain model year 2010 fusion, explorer, explorer sport trac, and mercury milan and mountaineer vehicles manufactured between december 15, 2009 through february 3, 2010 equipped with front seat manual recliners. These vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 202, "head restraint." the recliner gear plate teeth may be out of dimension specification which could result in limited pawl to gear plate tooth engagement.
- Risk
- In the event of a crash, the seatback and head restraint may move rearward, increasing the risk of injury.
- Remedy
- Dealers will replace the manual recliners for both power and manual seats free of charge. The safety recall is expected to begin on or before april 30, 2010. Owners may contact ford at 1‑866‑436‑7332.
Recall number 10V161000 · Recall details
See all 1 recalls for the 2010 Mercury Mountaineer
Defect investigations
Fleet Vehicle Recall Completion Audit
On November 18, 2010, the federal safety agency's Recall Management Division (RMD) opened an audit query (AQ10-001) to investigate recall remedy completion by rental car companies on safety recall campaigns.It was expected to provide the agency an indication of how completely and how quickly rental car fleets perform necessary recall-related remedies on the vehicles owned and then rented/leased for use on the roadways.RMD queried three (3) major motor vehicle manufacturers (Ford, Chrysler, and General Motors) and requested data regarding completion figures for fifteen (15) discreet safety recalls.Analysis of this data demonstrated that rental car recalls completion was neither complete nor consistent.The rental car companies representing the largest market share in the industry were then queried as to their respective policies for the rental, lease, and sale of vehicles with open recalls.The data and responses from the manufacturers and the rental car companies can be found in the document repository by accessing the ?Associated Documents link above.In December 2015, Congress enacted the Fixing America's Surface Transportation (FAST) Act.One section of the Act prohibits rental car companies from renting, leasing, or selling motor vehicles subject to open safety recalls.With the passage of the FAST Act and its prohibition, there is no continuing need for the agency to investigate rental car recall completions.Accordingly, this investigation is closed.The agency reserves the right to open any future investigations, including audits of individual recalls, or groups of recalls, or rental car companies, to examine more closely safety recalls performance and completion issues in this area.
AQ10001
Technical service bulletins for the 2010 Mercury Mountaineer 20
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- All accessory stick-on keyless entry keypads come with a wallet card containing the master code
- Distorted glass with a subtle orange peel pattern or streaking etched into the surface
- On vehicles equipped with an automatic transmission it is imperative that the converter pilot hub be...
- Corrosion concerns appearing as bubbled and/or peeling paint with or without accompanying white dust
- This SKU is a front upper ball joint
- Various vehicles equipped with a 4.6L, 5.4L, 6.8L modular 3 valve engine built on or before 8-Jan-2016 may...
- Replacing the original equipment SYNC/Navigation system with either an aftermarket SYNC/Navigation kit or...
- 2010-2018 various vehicles equipped with SYNC or SYNC 3 may not function when attempting to find or use...
- The Accessory (Wireless) Keyless Entry Keypad can only be used with vehicles that are factory built with...
- 2009-2017 vehicles equipped with a 6R80, 6R100, 6R140 automatic transmission have an updated main control...
2010 Mercury Mountaineer fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 4.6L 8‑cyl | RWD | 15 | 21 | 17 |
| 4.0L 6‑cyl | RWD | 14 | 20 | 16 |
| 4.6L 8‑cyl | 4WD | 14 | 19 | 16 |
| 4.0L 6‑cyl | 4WD | 13 | 19 | 15 |
What 2010 Mercury Mountaineer owners say
Most recent owner complaints, unedited.
Tl* the contact owns a 2010 mercury mountaineer. While the contact's wife was driving 70 MPH, she depressed the brake pedal and the front driver's seat started to slide backwards and the interior lighting illuminated. There were no warning indicators illuminated. The driver lost control of the vehicle as it made a 360 degree spin. The vehicle was not diagnosed or repaired. The dealer was not contacted. The manufacturer was informed of the failure. The failure mileage was unknown.
Doors locking mechanism malfunctioning and coding numbers not functioning. Being locked out when using code #s. Chain crankin harshly but not unlocking doors. When using key instead of code key does not unlock nor lock any doors except drivers door lock.
Rear differential is filling with water pass the fill plug. This is a garage kept car and never off road nor dirven in deep water. First time discovered at 22000 miles and the dealer replace the pinion seal and oil, but could not find the cause. Differential now making noise and again full of water past the fill plug. Searched online and found several people with the same problem with ford products. Dealer cannot find or not willing to find the cause. Called ford and they offer little to no support. Guess they are waiting for the differentials to lock up at highway speed and kill a dozen of so people.
At high speeds, the car stalls. It also stalls at stop lights. This happens repeatedly, and ford cannot figure out what is wrong with it.
Tl* the contact owns a 2010 mercury mountaineer. The contact stated that while attempting to latch both of the second row seat belts, the belts fractured and detached from the vehicle. The vehicle was taken to the dealer. The technician was unable to determine the cause of the failure. The manufacturer was made aware of the failure. The failure mileage was 60,000.
Front brakes started automatically seizing up random times and speeds due to a defective wheel bearing that disrupted the antilock brake sensors. This created an extremely dangerous driving issue. Ford refused to take responsibility or pay for any repairs because it was outside the warranty period.
See below from: tier 1 email - crcfmc [mailto:[email protected]] sent: thursday, march 20, 2014 8:57 am to: [xxx] ct: re: vehicle service issues crm:01660000000018 hello[xxx] my name is [xxx], I am from ford`s customer relationship center (crc). I have reviewed your email regarding the concerns on your 2010 mountaineer. I apologize for any inconvenience this has caused. Ford motor company considers the satisfaction of its owners to be one of its most important objectives. We commit very substantial resources and effort in a sincere attempt to resolve the concerns of our owners. However, limits must be placed on those efforts. After careful consideration we are supporting the previous decision and will not be able to reimburse you for the cost of repairs. Thank you for contacting ford motor company. We are sorry that we were not able to meet your expectations. Sincerely, [xxx] custtomer relationship center ford motor company from: generic - crc contact received: 3/18/2014 5:45 pm to: tier 1 email - crcfmc subject: vehicle service issues what is your vehicle sales or service issue?:the vehicles brakes started locking up while driving. The cause was due to a defective wheel bearing that caused the antilock brake sensor to malfunction creating an extremely dangerous driving scenario what action has your dealer taken to address the issue?:n/a what assistance are you seeking from ford motor company?:reimbursement for defective repairs are you the owner of the vehicle :yes mileage : 38000 where is your vehicle now : inpossession have you contacted the dealer :no information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).
From: tier 1 email - [xxx] sent: thursday, march 20, 2014 8:57 am to: [xxx]subject: re: vehicle service issues crm:01660000000018 [xxx], my name is [xxx], I am from ford`s customer relationship center (crc). I have reviewed your email regarding the concerns on your 2010 mountaineer. Ford motor company considers the satisfaction of its owners to be one of its most important objectives. We commit very substantial resources and effort in a sincere attempt to resolve the concerns of our owners. However, limits must be placed on those efforts. After careful consideration we are supporting the previous decision and will not be able to reimburse you for the cost of repairs. Thank you for contacting ford motor company. We are sorry that we were not able to meet your expectations. [xxx]ford motor company ------------------- original message ------------------- from: generic - crc contact received: 3/18/2014 5:45 pm to: tier 1 email - crcfmc what is your vehicle sales or service issue?:the vehicles brakes started locking up while driving. The cause was due to a defective wheel bearing that caused the antilock brake sensor to malfunction creating an extremely dangerous driving scenario what action has your dealer taken to address the issue?:n/a what assistance are you seeking from ford motor company?:reimbursement for defective repairs are you the owner of the vehicle :yes VIN : [xxx] mileage : 38000 where is your vehicle now : inpossession have you contacted the dealer :no dealer name : n/a information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).
There is a manufacturing fault with the position of the brake and the gas pedal. It is very easy to move the right foot from the gas to the brake and leave enough of the foot on the gas at the same time. It allows the brake to be pressed but also applies gas to give a vehicle a surge while braking. Had the same situation with a 2001 ford taurus and ford issued a recall notice to have the placement of pedals changed.
Compare the 2010 Mercury Mountaineer
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Questions about the 2010 Mercury Mountaineer
Is the 2010 Mercury Mountaineer reliable?
Owners have filed 13 complaints about the 2010 Mercury Mountaineer, fewer than a typical Mountaineer model year.
What is the 2010 Mercury Mountaineer year score?
The 2010 Mercury Mountaineer scores 94 out of 100 (good). The score compares it with the other model years of the Mercury Mountaineer: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2010 Mercury Mountaineer?
Brakes, with 5 complaints. Next is acceleration (4).
How many recalls does the 2010 Mercury Mountaineer have?
1 recall, covering seats.
What year does the Mercury Mountaineer have bad brakes?
The Mercury Mountaineer model years with the most brakes complaints are 1997 (40 complaints), 2002 (23 complaints) and 2003 (10 complaints).
What gas mileage does the 2010 Mercury Mountaineer get?
Official estimates for the 2010 Mercury Mountaineer range from 15 to 17 mpg combined. The most efficient version (4.6L 8-cyl, RWD) gets 15 city and 21 highway.
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