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2009 Mercury Mariner

Owner reports · Recalls · Investigations

More warning signs than most Mariner years

Owner complaints for the 2009 Mercury Mariner are substantially higher than the model-year median of 63.

About this comparison →

When problems were reported

Mileage at the reported incident

251 reports with mileage · 64 unknown

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.

  • Steering. Review the 167 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 44 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

9 crash reports0 fire reports3 injury reports

What owners actually said

315 reports
45,000 miles · Dec 9, 2015
Steering

I STARTED THE CAR AND WHEN I BEGAN TO DRIVE THE WHEEL WOULD NOT TURN. I ASKED THE PARKING GARAGE ATTENDANT TO TRY AND HE COULD NOT TURN THE WHEEL EITHER. I HAD TO GET A FLAT BED TOW TRUCK TO TAKE THE CAR FROM THE GARAGE TO A FORD DEALERSHIP. FORD TOLD ME THE WHOLE STEERING COLUMN NEEDED TO BE REPLACE DUE TO FAULTY STEERING MO…

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I STARTED THE CAR AND WHEN I BEGAN TO DRIVE THE WHEEL WOULD NOT TURN. I ASKED THE PARKING GARAGE ATTENDANT TO TRY AND HE COULD NOT TURN THE WHEEL EITHER. I HAD TO GET A FLAT BED TOW TRUCK TO TAKE THE CAR FROM THE GARAGE TO A FORD DEALERSHIP. FORD TOLD ME THE WHOLE STEERING COLUMN NEEDED TO BE REPLACE DUE TO FAULTY STEERING MODULE. IT COST ME $1,100.17 TO REPLACE THE STEERING COLUMN. ON AUGUST 19, 2014 I BROUGHT THE CAR TO FORD TO BE SERVICED FOR RECALL 14S05. BECAUSE THIS RECALL WAS FOR POWER STEERING AND THE FORD MOTOR COMPANY IS AWARE OF THIS PROBLEM, I THOUGHT THE EXPENSE WOULD BE PART OF THE RECALL. I HAVE COME TO LEARN THE THE RECALL WAS TO UPDATE THE SOFTWARE ONLY. WHICH WAS DONE TO THIS CAR AND DIDN'T HELP. THE FORD MOTOR COMPANY SHOULD BE HELD ACCOUNTABLE FOR THE SERIOUSNESS OF LOSING THE ABILITY TO STEER THE CAR DUE TO FAULTY MANUFACTURING AND THE COMPROMISED POSITION THAT IS PLACED ON THE DRIVER, OTHER CARS ON THE ROAD AND PEDESTRIANS. THIS CAR HAS ONLY $45,000.

NHTSA ODI #10809369

100,000 miles · Dec 3, 2015
EnginePower Train

WHILE DRIVING DOWN THE ROAD ANYWHERE FROM 20-55 MPH, THE CAR SEEMS TO STALL OUT AND THE ACCELERATOR NO LONGER WORKS. YOU HAVE TO PULL OVER AND SHUT THE VEHICLE OFF AND IT WILL START AGAIN. SOMETIMES THE SAME PROBLEM WILL OCCUR AGAIN WITHIN SECONDS, MINUTES, OR DAYS LATER.

NHTSA ODI #10808197

92,833 miles · Nov 12, 2015
Steering

TL* THE CONTACT OWNS A 2009 MERCURY MARINER. WHEN THE VEHICLE WAS STARTED, THE STEERING ABILITY WAS LOST. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS RESTARTED AND THE POWER STEERING RETURNED TO NORMAL. THE VEHICLE WAS DRIVEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE STEERING COLUMN NEEDED REPLACEMENT ALONG…

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TL* THE CONTACT OWNS A 2009 MERCURY MARINER. WHEN THE VEHICLE WAS STARTED, THE STEERING ABILITY WAS LOST. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS RESTARTED AND THE POWER STEERING RETURNED TO NORMAL. THE VEHICLE WAS DRIVEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE STEERING COLUMN NEEDED REPLACEMENT ALONG WITH THE POWER STEERING CONTROL MODULE. THE CONTACT ALSO STATED THAT THE VEHICLE WAS REPAIRED UNDER A RECALL FOR THE SAME FAILURE ON SEPTEMBER 15, 2015. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 92,833.

NHTSA ODI #10790019

Mileage unknown · Nov 10, 2015
Steering

POWER STEERING TORQUE SENSOR WENT BAD DEALER TOLD ME .THEY SAY NO RECALL NO THIS

NHTSA ODI #10789467

100,000 miles · Nov 3, 2015
Steering

TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED THE SAME FAILURES AS LISTED IN NHTSA CAMPAIGN NUMBER: 14V284000 (STEERING); HOWEVER, THE VIN WAS NOT INCLUDED IN THE RECALL. WHILE STARTING THE VEHICLE, THE POWER STEERING FAILED AND WAS VERY DIFFICULT TO MANEUVER. THE VEHICLE WAS TAKEN …

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TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED THE SAME FAILURES AS LISTED IN NHTSA CAMPAIGN NUMBER: 14V284000 (STEERING); HOWEVER, THE VIN WAS NOT INCLUDED IN THE RECALL. WHILE STARTING THE VEHICLE, THE POWER STEERING FAILED AND WAS VERY DIFFICULT TO MANEUVER. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE POWER STEERING FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 100,000.

NHTSA ODI #10787993

55,057 miles · Sep 30, 2015
Wheels

VEHICLE HAS ORIGINAL MICHELIN P225/65R17 CROSS TERRAIN TIRES: DOT SEQUENCE B93T, DOT PRODUCTION NUMBER PYMX 2908, WITH 55,057 MILES. DURING ROUTINE OIL CHANGE AND TIRE ROTATION, SHOP DISCOVERED DRY ROTTING BETWEEN TREADS AND FINE-LINE CRACKING ON ALL FOUR TIRES REQUIRING NEAR-FUTURE REPLACEMENT. MICHELIN SIX-YEAR WARRANTY EXP…

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VEHICLE HAS ORIGINAL MICHELIN P225/65R17 CROSS TERRAIN TIRES: DOT SEQUENCE B93T, DOT PRODUCTION NUMBER PYMX 2908, WITH 55,057 MILES. DURING ROUTINE OIL CHANGE AND TIRE ROTATION, SHOP DISCOVERED DRY ROTTING BETWEEN TREADS AND FINE-LINE CRACKING ON ALL FOUR TIRES REQUIRING NEAR-FUTURE REPLACEMENT. MICHELIN SIX-YEAR WARRANTY EXPIRED JULY 2015. VEHICLE IS PARKED IN RESIDENTIAL GARAGE; THERE IS NO KNOWN ADVERSE WEATHER EXPOSURE.

NHTSA ODI #10778620

104,000 miles · Sep 16, 2015
Steering

TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT THE POWER STEERING FAILED AND WAS VERY DIFFICULT TO MANEUVER. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE TECHNICIAN STATED THAT THE ELECTRONIC SENSOR FAILED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 10…

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TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT THE POWER STEERING FAILED AND WAS VERY DIFFICULT TO MANEUVER. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING. THE TECHNICIAN STATED THAT THE ELECTRONIC SENSOR FAILED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 104,000.

NHTSA ODI #10764107

61,000 miles · Aug 10, 2015
Engine

TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT WHILE DRIVING AT 45 MPH, THE THROTTLE BODY FAILED AND THERE WAS A SUDDEN LOSS OF ACCELERATION. THE CONTACT APPLIED FORCE TO THE ACCELERATOR PEDAL AND IT DID NOT RESPOND. THE CONTACT WAS NOT INCLUDED IN NHTSA ACTION NUMBER: PE13003 (ENGINE). THE VEHICLE WAS TAKE…

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TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT WHILE DRIVING AT 45 MPH, THE THROTTLE BODY FAILED AND THERE WAS A SUDDEN LOSS OF ACCELERATION. THE CONTACT APPLIED FORCE TO THE ACCELERATOR PEDAL AND IT DID NOT RESPOND. THE CONTACT WAS NOT INCLUDED IN NHTSA ACTION NUMBER: PE13003 (ENGINE). THE VEHICLE WAS TAKEN TO THE DEALER BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 61,000.

NHTSA ODI #10747401

67,000 miles · Jul 20, 2015
Unknown Or Other

WAS USING CRUISE CONTROL DOWN THE ROAD DOING 45 MILES PER HOURS. WHILE ON A STRAIGHT STRETCH AND GOING UP SLIGHT HILL CAR WAS FINE. WHEN I STARTED TO GO DOWN THE SLIGHT HILL CAR SEEMED TO SOUND LIKE IT WAS IN NEURAL GEAR AND MY RMPS JUMPED TO BETWEEN 3 AND 4. I LOOKED TO SEE IF SOME HOW THE CAR GOT ACCIDENTLY SHIFTED INTO NEUTRA…

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WAS USING CRUISE CONTROL DOWN THE ROAD DOING 45 MILES PER HOURS. WHILE ON A STRAIGHT STRETCH AND GOING UP SLIGHT HILL CAR WAS FINE. WHEN I STARTED TO GO DOWN THE SLIGHT HILL CAR SEEMED TO SOUND LIKE IT WAS IN NEURAL GEAR AND MY RMPS JUMPED TO BETWEEN 3 AND 4. I LOOKED TO SEE IF SOME HOW THE CAR GOT ACCIDENTLY SHIFTED INTO NEUTRAL AND IT WASN'T IT WAS STILL IN DRIVE. SO I TURNED THE CRUISE CONTROL OFF AND EVERYTHING WENT BACK TO DRIVING AND SOUNDING NORMAL. THIS IS NOW THE THIRD TIME THIS HAS HAPPENED. WE JUST PURCHASED THIS CAR AND OF COURSE LIMITED WARRANTY IS NOW OVER AND THIS IS NOW HAPPENING. WAS WONDERING IF THERE WAS A RECALL ON SOMETHING LIKE THIS OR IF MAYBE OTHER PEOPLE ARE HAVING THIS PROBLEM ALSO. PLEASE LET ME KNOW AS I FEEL THIS IS NOW A UNSAFE VEHICLE AND I WISH I WOULD OF KNOW THIS WAS GONNA HAPPEN BEFORE I SHELLED OUT 12,000 FOR IT BECAUSE NOW I DON'T WANT TO DRIVE IT ESPECIALLY WITH MY CHILDREN OR MY NEWBORN GRANDSON IN THE VEHICLE WITH ME.

NHTSA ODI #10735051

79,000 miles · Jul 15, 2015
Engine

TL* THE CONTACT OWNS A 2009 MERCURY MARINER. WHILE DRIVING APPROXIMATELY 55 MPH, THE VEHICLE BEGAN TO SHUTTER, THE ENGINE STALLED, AND THE SERVICE SENSOR LIGHT ILLUMINATED. FIVE MINUTES LATER, THE ENGINE WAS RESTARTED AND THE FAILURE RECURRED AFTER APPROXIMATELY FIFTEEN MINUTES. THE FAILURE OCCURRED ON MULTIPLE OCCASIONS. THE CA…

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TL* THE CONTACT OWNS A 2009 MERCURY MARINER. WHILE DRIVING APPROXIMATELY 55 MPH, THE VEHICLE BEGAN TO SHUTTER, THE ENGINE STALLED, AND THE SERVICE SENSOR LIGHT ILLUMINATED. FIVE MINUTES LATER, THE ENGINE WAS RESTARTED AND THE FAILURE RECURRED AFTER APPROXIMATELY FIFTEEN MINUTES. THE FAILURE OCCURRED ON MULTIPLE OCCASIONS. THE CAUSE OF THE FAILURE WAS NOT DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 79,000.

NHTSA ODI #10734257

Official recalls

1

14V284000 · Steering:electric Power Assist System

May 29, 2014

Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010. The affected vehicles have a steering torque sensor that may not be able to properly detect driver steering input. As a result, the system could remove the Electric Power Steering (EPS) assist.

Consequence & remedy

Consequence: If power steering assist is lost, greater driver effort would be required to steer the vehicle at low speeds, increasing the risk of a crash.

Remedy: Ford will notify owners, and dealers will update the software for the power steering control module (PSCM) and the instrument cluster module, free of charge. If a vehicle shows a history of a loss of the torque sensor signal or fault codes relating to the PSCM when the vehicle is brought in for the recall remedy, the affected components will be replaced, free of charge. The recall began on July 18, 2014. Owners may contact Ford customer service at 1-800-392-3673. Ford's number for this recall is 14S05.

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

2

DP15001 · Loss Of Power Steering While Driving

Opened Apr 1, 2015 · Closed Jun 14, 2018

Status: closed (inferred from source dates) · Steering:electric Power Assist System

On May 27, 2014, amended June 2, 2014, Ford Motor Company (Ford) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect that may result in a sudden loss of power steering assist while driving in approximately 746,067 model year (MY) 2008 through 2011 Ford Escape vehicles equipped with electric power assisted steering (NHTSA 14V-284, Ford 14S05). Ford's DIR described the defect condition as a poor signal to noise ratio [SNR] in the torque sensor within the Electric Power Assisted Steering (EPAS) system [which] does not allow the PSCM to determine the driver's steering input. When the system detects this fault condition, it transitions the EPAS system to the fail-safe/manual steering mode.Ford's DIR indicates that loss of power steering assist while driving would require higher steering effort at lower vehicle speeds, which may result in an increased risk of a crash.Ford's remedy instructs dealers to check the Power Steering Control Module (PSCM) for Diagnostic Trouble Codes (DTCs) to determine the proper repair procedure. If no DTCs are present, dealers are to update the PSCM and instrument cluster module software. The updated PSCM software changes the torque sensor fault strategy so that the SNR condition does not result in a loss of power steering assist while driving.In addition, audible and visual warnings are provided for torque sensor faults.If DTCs indicating faults in the torque sensor, PSCM or Power Steering Motor (motor) are present in the initial recall inspection, the dealer performs the following repairs: 1) replaces the torque sensor for torque sensor faults (DTC B2278); or 2) replaces the steering column for faults related to the PSCM (DTC B1342) or motor (DTC B2277).Continued in attachment pages

PE13003 · Electronic Throttle Body Malfunction

Opened Feb 21, 2013 · Closed Feb 28, 2014

Status: closed (inferred from source dates) · Engine

On February 21, 2013, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE13-003 to investigate allegations of electronic throttle body (ETB) failures resulting in sudden reduction of engine power in model year (MY) 2009-2013 Ford Escape, Fusion, Mariner and Milan vehicles. During this investigation, Ford identified a condition in subject vehicles equipped with 2.5L and 3.0L engines that may result in a sudden reduction of engine power.According to Ford, the ETB internal motor contacts may develop a high resistance material buildup condition on the commutator, resulting in intermittent electrical connectivity and reduced engine power. When this condition occurs, the Malfunction Indicator Lamp (MIL) or Wrench light will illuminate and the vehicle may enter a limited limp home mode.Ford?s trade name for the feature is Failure Mode Effects Management (FMEM) mode.In this mode, engine power and vehicle speed are reduced, while full function of the power steering, power braking, lighting, and climate control systems are maintained.ODI?s complaint analysis indicate that the predominant failure mode involved reduced motive power associated with the limited limp home mode with engine speeds limited to approximately 900 RPM. Analysis of warranty claims provided by Ford identified 59,807 claims related to ETB replacements and approximately 50 percent of claims are associated with diagnostic trouble codes (DTC) P2111, Throttle Body Stuck Open, and P2112, Throttle Body Stuck Closed.Ford described several factors where the ETB motor may fail resulting in DTCs P2111 or P2112 but the failure is not an existing stuck open or closed ETB valve position.According to Ford, the ETB control strategy provides the driver with three FMEM modes that allow varying degrees of vehicle mobility depending on the severity of the fault detected.DTCs associated with stuck open or closed throttle valves are designated the highest failure severity resulting in engine speeds limited to high idle corresponding to the limited limp home mode.Vehicles are not likely to unexpectedly stall as a result of this condition, but drivers may characterize the reduced functionality as a stall, even though their vehicle may still has motive capability.Other FMEM limp modes may result in reduced engine performance but will maintain vehicle speed above 20mph. During this investigation, Ford and its suppliers, Delphi and Igarashi, updated the powertrain control module (PCM) software to include a throttle body motor cleaning cycle during key-on and modified the ETB internal motor components design, surface finish and material composition to improve durability. Additionally, Ford developed a remedy procedure and issued a special Customer Satisfaction Program (CSP) 13N03 extending the ETB warranty coverage and instructing dealers to update the powertrain calibration to improve vehicle performance in the event that intermittent electrical connectivity of the throttle body motor contacts occurs. The program extends the coverage for up to 10 years of service or 150,000 miles from the warranty start date of the vehicle, all vehicles are eligible for the program through January 31, 2015 regardless of mileage.Owners of the affected vehicles will be contacted by mail to take their vehicle to a Ford dealer who will reprogram the PCM to the latest calibration. The bulletin was sent to dealers on January 17, 2014 and the owner letter mailing began on January 27, 2014. See the investigative file for copies of Ford's bulletin and owner letter. This preliminary evaluation is closed. The closing of this investigation does not constitute a finding that