The contact owns a 2009 Mercury Mountaineer. The contact stated while making a left or right turn, she heard an abnormal noise, and the steering wheel became difficult to turn. The contact stated that the Roll Stability Control (RSC) warning light was illuminated. The contact took the vehicle to the local dealer, where it was diagnosed with needing the Roll Stability Control (RSC) to be replaced. The vehicle was repaired but continued to experience the failure. The manufacturer had not been informed of the failure. The failure mileage was approximately 118,000.
The worst 2009 Mercury Mountaineer problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Seats2
- Steering2
- Acceleration1
- Brakes1
- Electrical1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Seats2
- Steering2
- Acceleration1
- Brakes1
- Electrical1
Recalls
No recalls on record for this model year.
Technical service bulletins for the 2009 Mercury Mountaineer 17
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
- 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...
- 2009-2017 vehicles equipped with a 6R80, 6R100, 6R140 automatic transmission have an updated main control...
- 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...
2009 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 2009 Mercury Mountaineer owners say
Most recent owner complaints, unedited.
Muffler. Still has baffles and dampers. Catalytic converter is still attached. Not loud or obnoxious. Due to having a 3in in diameter tail pipe. I was failed. I was approved for the last 8 years at different locations. These new strict restrictions are costing consumers unnecessary costs. This was an unfair failure that was posted as a safety issue when it is clearly not. Suv was stationary and passed all over requirements. This was a judgement call by tyre trak in springfield.
Tl*the contact owns a 2009 mercury mountaineer. The contact stated that when the key was inserted in the ignition switch to start the vehicle, the power seat failed to move forward from the easy exit position. The contact stated that the power seat would also move backwards in a position that prevented the contact from reaching the brake pedal. In addition, the air bag warning indicator illuminated when the failure occurred. The failure recurred on several occasions. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 45,000. Updated 5/28/15 *ta the consumer stated the seat did move forward from easy exit, but immediately or when starting vehicle returned to easy exit. The dealer diagnosed the failure as a weak battery. Vehicle was repaired. Updated 9/17/2015
Have a 2009 mercury mountaineer with 71,000 miles. In the past 10 days, have had four incidents where, while driving, the driver's side power front seat has suddenly reverted to the easy exit position. We bought this car used with 22,000 miles. Have had the car for four years. My wife and I are tall; however, even at that, while driving at speeds between 55-70 (on turnpikes and major highways), this is still an issue. Took car to a ford dealer in reading, pa - on a saturday (maybe they don't do as much intensive diagnostics on weekends?) recently who found no issues although they indicated other mountaineers of the 2002 or 2005 models had similar issues and it appeared to be an problem with the ignition switch. Did not get the ignition replaced but the seat moved again today while my wife drove the car. Will go back to the ford dealer during the week to get more intensive diagnostics.
Tl* the contact owns a 2009 mercury mariner. The contact stated that while driving 60 MPH, the vehicle stalled and the warning lights illuminated. The contact had to shift to park and restart vehicle to resolve the failure. The vehicle was taken to the dealer who determined that the throttle position sensor had failed. The throttle position sensor was replaced. The manufacturer was made aware of the failure. The failure and current mileage was 47,000.
Tl*the contact owns a 2009 mercury mountaineer. The contact stated that when he rocked the steering wheel back and forth it made a popping noise. The contact stated that the rack and pinion caused the failure to occur. The dealer stated that all of the ford and mercury vehicles for that year and model were designed the same way. The driver side tire on the inside also began to exhibit abnormal wear, which the owner stated could also be the rack and pinion or the tie rod. The VIN was not available. The vehicle was not repaired. The failure and current mileages were 22,000.
Compare the 2009 Mercury Mountaineer
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Questions about the 2009 Mercury Mountaineer
Is the 2009 Mercury Mountaineer reliable?
Owners have filed 6 complaints about the 2009 Mercury Mountaineer, fewer than a typical Mountaineer model year.
What is the 2009 Mercury Mountaineer year score?
The 2009 Mercury Mountaineer scores 95 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 2009 Mercury Mountaineer?
Seats, with 2 complaints. Next is steering (2).
How many recalls does the 2009 Mercury Mountaineer have?
No recalls on record.
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 2009 Mercury Mountaineer get?
Official estimates for the 2009 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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