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2009 Mercury Mountaineer

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 5 of 6 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Seats. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Steering. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports0 fire reports0 injury reports

What owners actually said

6 reports
118,000 miles · Nov 17, 2022
Service BrakesSteering

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 di…

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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.

NHTSA ODI #11493929

Mileage unknown · Mar 3, 2018
Unknown Or Other

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 POST…

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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.

NHTSA ODI #11076059

45,000 miles · Mar 24, 2015
Seats

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 …

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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*JS

NHTSA ODI #10701469

71,000 miles · May 19, 2014
Electrical SystemSeats

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, …

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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. *JS

NHTSA ODI #10592417

47,000 miles · May 14, 2013
Vehicle Speed Control

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 THROT…

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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.

NHTSA ODI #10511893

22,000 miles · Sep 3, 2010
Steering

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.…

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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.

NHTSA ODI #10353732

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.