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U.S. public vehicle records

2009 Mercury MOUNTAINEER problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

6 owner complaints analyzed

0 distinct recall campaigns

47,000 mi median reported failure mileage

Scope: 2009 model year. Data snapshot: . 5 complaints include usable failure mileage.

This selection has limited data. It remains available for lookup but is excluded from search indexing.

Owner-reported patterns

Most common problems

Seats is the most frequently named component, appearing in 2 of 6 complaints (33.3%). A complaint can name multiple components.

Recurring terms in complaint narratives
TopicMatching reportsShare of complaints
Steering behavior233.3%
Engine operation116.7%
Braking behavior116.7%
Electrical and battery issues116.7%

Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Seats
2
Steering
2
Electrical System:Ignition
1
Service Brakes
1
Unknown Or Other
1
Vehicle Speed Control
1
Component breakdown data
CategoryCount
Seats2
Steering2
Electrical System:Ignition1
Service Brakes1
Unknown Or Other1
Vehicle Speed Control1

Seats: 2; Steering: 2; Electrical System:Ignition: 1; Service Brakes: 1; Unknown Or Other: 1; Vehicle Speed Control: 1

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000
1
25,000 to 49,999
2
50,000 to 74,999
1
75,000 to 99,999
0
100,000 to 149,999
1
150,000 and above
0
Reported problems by failure mileage data
CategoryCount
Under 25,0001
25,000 to 49,9992
50,000 to 74,9991
75,000 to 99,9990
100,000 to 149,9991
150,000 and above0

Under 25,000: 1; 25,000 to 49,999: 2; 50,000 to 74,999: 1; 75,000 to 99,999: 0; 100,000 to 149,999: 1; 150,000 and above: 0

25,000 to 49,999 miles has the most reports with usable mileage (2). 1 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2010
1
2013
1
2014
1
2015
1
2018
1
2022
1
Complaints over time data
CategoryCount
20101
20131
20141
20151
20181
20221

2010: 1; 2013: 1; 2014: 1; 2015: 1; 2018: 1; 2022: 1

Pattern summary

Seats leads the component reports. Steering behavior appears in 2 complaint narratives. Engine operation appears in 1 complaint narratives. Braking behavior appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Complaint evidence

Examples provide context, not a representative sample or a verified diagnosis.

Owner report 10353732 · 2010-09-03 (September 3, 2010)

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 …

Owner-reported narrative. 22,000 miles reported. Look up ODI 10353732 at NHTSA ↗

Owner report 11493929 · 2022-11-17 (November 17, 2022)

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 appro…

Owner-reported narrative. 118,000 miles reported. Look up ODI 11493929 at NHTSA ↗

Owner report 10511893 · 2013-05-14 (May 14, 2013)

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.

Owner-reported narrative. 47,000 miles reported. Look up ODI 10511893 at NHTSA ↗

Owner report 10701469 · 2015-03-24 (March 24, 2015)

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 …

Owner-reported narrative. 45,000 miles reported. Look up ODI 10701469 at NHTSA ↗