The contact owns a 2008 Mercury Mountaineer. The contact stated that the check engine warning light was illuminated. The contact stated the vehicle stalled while driving at an undisclosed speed. The contact stated that several attempts were needed to restart the vehicle to continue driving. The contact stated that the gear shifter intermittently failed to move to the intended position. The contact stated that there was an abnormal fuel odor inside the cabin of the vehicle, and the fuel level was lowered sooner than normal. The vehicle was taken to the dealer to be diagnosed; however, the result was not provided. The contact stated that there was a code for an EVAP failure. The vehicle was not repaired. The vehicle was taken to another dealer, Peoria Ford (9130 W Bell Rd, Peoria, AZ 85382) however, the contact was not provided the cause for the failure. The vehicle was taken to an independent mechanic; however, the vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 200,000.
The worst 2008 Mercury Mountaineer problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Seats54
- Electrical39
- Lights10
- Engine9
- Transmission9
- Brakes5
- Seat belts4
- Body3
- Fuel system3
- Steering3
- Visibility3
- Acceleration2
- Driver assistance2
- Airbags1
- Tires1
- Wheels1
Specific symptoms reported on the 2008 Mercury Mountaineer
Recalls 1
Power train: automatic transmission: cooling unit and lines
- What is wrong
- On certain sport utility vehicles equipped with the 4.6l engine and 6r transmission, the bolt securing the transmission oil cooler line fittings at the transmission may not have been sufficiently torqued during vehicle assembly. As a result, the bolt may loosen and the transmission oil cooler lines may disengage from the transmission, causing a transmission fluid leak.
- Risk
- If leaking transmission fluid contacts the catalytic converter, it may pose a risk of fire.
- Remedy
- Dealers will inspect and have the transmission cooler line attachment bolt tightened free of charge. The recall began on august 30, 2007. Owners may contact ford at 1‑800‑392‑3673.
Recall number 07V453000 · Recall details
See all 1 recalls for the 2008 Mercury Mountaineer
Defect investigations
Tire valve cracking
On october 14, 2008, odi opened pe08-060 to investigate allegations of cracked and leaking snap-in tire valves in model year (my) 2007 vehicles manufactured by ford motor company.the valves were supplied to ford by topseal auto-parts, a subsidiary of the shanghai baolong automotive corporation in china.valves made by topseal for aftermarket sale were the subject of two recent safety recalls by tech international (08t-018) and dill air controls (08t-028), the latter of which was investigated by odi in pe08-036 and ea08-022.the defect conditions addressed by the aftermarket tire valve recalls both involved inadequate resistance to ozone cracking due to issues with the supply of anti-ozonant chemicals to topseal for a period from july to mid-november 2006.the aftermarket valves were compounded with a blend of epdm and natural rubber, using a relatively low percentage of epdm (epdm provides inherent resistance to ozone cracking).hence, the need for anti-ozonant chemicals and the problems with cracking when those chemicals were missing or out of specification in some lots of valves.both recall campaigns involved inspection programs to identify and replace valves with visible surface cracking.although the topseal valves supplied to ford also appear to have been affected by the anti-ozonant supply issues in mid to late-2006, ford indicated that its valves were made at a different topseal production line and were compounded with a higher percentage of epdm rubber to meet more stringent specifications from ford.odi's analysis of complaint and warranty data provided by ford showed that problems with cracked tire valves were significantly higher for my 2007 vehicles produced from december 2006 through march 2007.ford responded by implementing changes in its material specifications for snap-in rubber tire valves and also increasing the quality and acceptance standards for valves imported for use in its vehicles.while the complaint and warranty claim rates are elevated for subject vehicles produced from december 2006 through march 2007, the rates of leaking valves are well below one percent of production for each of the peak months for all of the affected models.a substantial majority of the subject vehicles are equipped with tire pressure monitoring systems (TPMS) which warn the driver when any tire pressures drops below 25 percent of recommended inflation pressure. As outlined in a letter to odi dated april 6, 2009, ford has agreed to send letters to owners of certain my 2007 and 2008 ford, lincoln and mercury vehicles to provide information about the cracking concern. Letters will be sent to owners of vehicles built from november 2006 through may 2007.owners can opt for a free dealer inspection.valves exhibiting surface cracks or air leakage related to ozone attack will be replaced by ford under its normal warranty terms.ford expects to send the letter by approximately mid-may 2009. Based on the use of TPMS in the majority of subject vehicles and the relatively low rates of repairs associated with leaking valves and resultant tire damage, odi believes that the actions ford has agreed to take will provide effective and expeditious resolution for vehicles that were built during the period when valves with inadequate resistance to ozone cracking were most likely to have been used in vehicle production.further investigation of this matter would not be an efficient allocation of agency resources.accordingly, this investigation is closed.the closing of this investigation does not constitute a finding by the federal safety agency that a safety-related defect does not exist.the agency will continue to
PE08060
Technical service bulletins for the 2008 Mercury Mountaineer 21
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
- When performing any transmission fluid changes or topoffs involving MERCON SP, MERCON LV has replaced all...
- 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...
- The Accessory (Wireless) Keyless Entry Keypad can only be used with vehicles that are factory built with...
- Replacing the original equipment sync/navigation system with either an aftermarket sync/navigation kit or...
- Some 2008-2017 ford/mercury/lincoln vehicles equipped with sync may generate a vhr that identifies a...
- The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic...
2008 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 |
|---|---|---|---|---|
| 4.0L 6‑cyl | RWD | 14 | 20 | 16 |
| 4.6L 8‑cyl | RWD | 13 | 20 | 16 |
| 4.0L 6‑cyl | 4WD | 13 | 19 | 15 |
| 4.6L 8‑cyl | 4WD | 13 | 19 | 15 |
What 2008 Mercury Mountaineer owners say
Most recent owner complaints, unedited.
The contact owns a 2008 Mercury Mountaineer. The contact stated that after parking the vehicle, he was unable to remove the key from the ignition. The contact stated no warning light was illuminated. The contact stated he was able to remove the key after disconnecting the battery. The contact took the vehicle to an independent mechanic and was informed that the steering column lock module needed to be replaced. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 141,782.
Since I purchased in 2009, engine kills anytime, mostly when gas pedal not pressed. Pulling out of parking lots, sitting at red lights, or letting off gas on interstate, engine just kills. Sometimes feels like a jolt. I have to put the shift in neutral and restart the engine. Records of all visits for the problem at dealership. Never could solve problem, but too unsafe to donate to my grandson. If something were to happen to him because of a defect that was never found, I don't know what I'd do. Cannot check transmission fluid level. Sealed. I do have some fluid stains on my driveway. For years I've reported to the dealership and specified the concern for safety but to no avail. It kills anytime. May not die for a week, or tomorrow, or even a month. No particular pattern. Feels like a transmission problem. If I'm sitting in a parking lot with motor running, sometimes it just kills. It's the shifting to neutral while driving on highways and streets to restart while moving I'm worried about. I've had several mechanics claim they fixed it but to no avail. Please give me some direction. All the shops I've gone to are reputable businesses. One mechanic said the electronic brain (computer box) might be causing and said to send it to mercury for recalculation. I don't know about that. Most of the read outs are epa related.
On a 2008 mercury mountaineer the driver side seat belt will not stay hooked in it comes lose.
Drivers side seat belt with not stay locked in.
Seat belt on the drivers side fails to say hooked into the seat belt clip-in
Tl* the contact owns a 2008 mercury mountaineer. The contact stated that the instrument panel lighting system was inoperable. The vehicle was taken to an independent mechanic who diagnosed the vehicle however, was unable to determine the cause of the failure. The instrument panel lights were replaced however, the failure recurred. The vehicle then was taken to maritime ford (1305 franklin st, manitowoc, wi 54220) where the vehicle was diagnosed and it was determined that the dimmer switch needed to be placed. The manufacturer was made aware of the failure. The failure mileage was approximately 120,000. *dt
Car when idle shuts off in middle of traffic locking break an steering wheel can cause accident happened to me in middle of traffic thank god I was close to emergency exit car shutoff not allowing to brake had to press emergency brake.
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. This error comes and goes constantly at any given time.
Driver seat electrical adjustment will move itself backwards while car is moving. There is no pattern to this problem, it is random.
Compare the 2008 Mercury Mountaineer
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Questions about the 2008 Mercury Mountaineer
Is the 2008 Mercury Mountaineer reliable?
Owners have filed 96 complaints about the 2008 Mercury Mountaineer, close to a typical Mountaineer model year.
What is the 2008 Mercury Mountaineer year score?
The 2008 Mercury Mountaineer scores 75 out of 100 (average). 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 2008 Mercury Mountaineer?
Seats, with 54 complaints, typically around 65,000 miles. Next is electrical (39).
How many recalls does the 2008 Mercury Mountaineer have?
1 recall, covering power train.
What year does the Mercury Mountaineer have bad seats?
The Mercury Mountaineer model years with the most seats complaints are 2008 (54 complaints), 2007 (26 complaints) and 1998 (12 complaints).
What gas mileage does the 2008 Mercury Mountaineer get?
Official estimates for the 2008 Mercury Mountaineer range from 15 to 16 mpg combined. The most efficient version (4.0L 6-cyl, RWD) gets 14 city and 20 highway.
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