2009 Mercury Mountaineer Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2009 Mercury Mountaineer, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Interior & seats228.6%
- Steering228.6%
- Brakes114.3%
- Driver assistance114.3%
- Electrical114.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Interior & seats
Reports naming seats, latches, locks, linkages and interior fittings.
From owner reports, verbatim
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
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
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
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.
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
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
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .