2010 Mercury Mariner problems, complaints & recalls
Most-reported problem areas: Vehicle Speed Control (65) · Steering (56) · Power Train (44)
🧭 Reliability snapshot
Compared against other Mercury Mariner model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
225 NHTSA complaints that reported an odometer reading.
Safety recalls (3)
Fuel System, Gasoline:delivery:fuel Pump 2016-10-26 · campaign 16V777000 · 329,265 vehicles
Defect: Ford Motor Company (Ford) is recalling certain model year 2010-2012 Ford Escape vehicles manufactured February 26, 2009, to April 29, 2012, and 2010-2011 Mercury Mariner vehicles manufactured February 25, 2009, to December 12, 2010. On vehicles with a 3.0L engine, the Fuel Delivery Module (FDM) may crack, causing a fuel leak.
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
Fix: Ford will notify owners, and dealers will replace the FDM flange with one that has a redesigned fuel supply port, free of charge. Remedy parts are currently unavailable. Interim notices were mailed to owners on December 13, 2016. Owners will receive a second notice when remedy parts become available. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 16S41.
Suspension:front:wheel Bearing 2015-06-03 · campaign 15E045000 · 576 vehicles
Defect: The Timken Company (Timken) is recalling certain aftermarket front wheel bearings, part number 510072, sold from January 22, 2015, to May 21, 2015, to be used as service parts on 2001-2012 Ford Escape, 2001-2011 Mazda Tribute, and 2005-2011 Mercury Mariner vehicles. The affected wheel bearings have incorrect dimensions of a 42mm bore, 76mm outer dimension, and 39mm width, instead of a 42mm bore, 78mm outer dimension and a 45mm width.
Risk: Use of an incorrectly sized wheel bearing can adversely affect the braking and steering of the vehicle, increasing the risk of a crash.
Fix: Timken has begun notifying distributors who will offer purchasers replacement wheel bearings, free of charge. The recall began on May 21, 2015. Owners may contact Timken customer service at 1-866-984-6536.
Steering:electric Power Assist System 2014-05-29 · campaign 14V284000 · 740,878 vehicles
Defect: 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.
Risk: 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.
Fix: 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
Service bulletins (34)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Engine And Engine Cooling:exhaust System:emission Control:catalytic Convertor 2020-06-03 · DOR-M9J4S-07 · Service Bulletin/Repair Instructions
these skus are exhaust manifolds with catalytic converters. the customer communication requested return of unsold inventory due to a loss of carb certification. these skus can no longer be sold as they do not meet carb standards, but parts on vehicles are not effected.
Engine And Engine Cooling:exhaust System:emission Control:catalytic Convertor 2020-06-03 · DOR-M3J3F-07 · Service Bulletin/Repair Instructions
these skus are exhaust manifolds with catalytic converters. the customer communication requested return of unsold inventory due to a loss of carb certification. these skus can no longer be sold as they do not meet carb standards, but parts on vehicles are not effected.
Visibility:glass, Side/Rear 2019-08-09 · SSM 48130 · Service Bulletin/Repair Instructions
some 2010-2020 vehicles may exhibit distorted glass with a subtle orange peel pattern or streaking etched into the surface. this is caused by hydrofluoric acid which is used in some car wash solutions as a cleaning agent. hydrofluoric acid can attack the glass and cause visual distortion and/or disc
Power Train 2019-05-10 · SSM 47976 · Service Bulletin/Repair Instructions
on vehicles equipped with an automatic transmission it is imperative that the converter pilot hub be greased with motorcraft multi-purpose grease spray xl-5-a even if grease was not applied from the factory. also verify that the engine/transmission alignment dowel pins are present as well as the eng
Equipment 2018-03-30 · SSM 47201 · Service Bulletin/Repair Instructions
replacing the original equipment sync/navigation system with either an aftermarket sync/navigation kit or modifying original sync/navigation parts to provide additional features is not recommended nor supported on any ford, mercury or lincoln vehicle. only approved genuine ford accessories or origin
Equipment:electrical 2018-01-10 · SSM 47009 · Service Bulletin/Repair Instructions
the accessory (wireless) keyless entry keypad can only be used with vehicles that are factory built with remote keyless entry (rke). the master code for the accessory (wireless) keyless entry keypad can be retrieved from fmcdealer - parts and service - parts product line information - keys/entry dev
Showing the 6 most recent of 34 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-08-11 · Steering · 190,000 mi“the contact owns a 2010 mercury mariner. the contact stated that while driving approximately 20 mph, an alarm sounded, and the steering wheel locked up. the message "power steering assist fault" was displayed. the contact was able to drive to the residence nearby. the vehicle was not diagnosed or repaired. the manufacturer was notified of the failu…”
2025-12-23 · Steering · 185,000 mi“the contact owns a 2010 mercury mariner. the contact stated that after starting the vehicle, the message "power steering assist failure" was displayed, and the steering wheel became extremely difficult to turn in either direction. the local dealer and manufacturer were notified of the failure, but no assistance was provided. the contact was inform…”
2025-09-08 · Unknown Or Other“me and my wife purchased a vehicle from a private seller to use for personal commute. a month later we started to notice more issue were occurring with the car then stated from the seller. i took it to an auto body shop to get it inspected and possibly serviced and upon that inspection the clerk stated that there was a milage adjustment done to the…”
2025-06-05 · Structure:body“the passenger side of the subframe has holes and will veer hard right when it brakes …”
2025-05-12 · Steering“power steering assist fault went out with no warning. now steering wheel is locking up while driving. also when trying to gain speed the vehicle bogs out.…”
2025-05-11 · Fuel/Propulsion System“engine light came on after putting fuel in my car it is hapless the codes read emission and fuel issues to replace cap but it is hapless it says it's an issue that needs to be fixed now my engine light won't go off …”
2024-02-04 · Steering“the power steering assist is malfunctioning and it is available for inspection upon request. the steering wheel is very difficult to turn, it's as if the power steering assist is keeping the wheel from turning. no, but i spoke to someone at ford and they said that it sounded like my car should be in the recall that was announced for my vehicle ty…”
2024-01-02 · Steering“the contact owns a 2010 mercury mariner. the contact stated that while driving at approximately 5 mph and attempting to park the vehicle, the power steering became inoperable. the power steering failure message was displayed. the vehicle was taken to the local dealer but was not diagnosed or repaired. the manufacturer was contacted and referred the…”
2023-10-30 · Steering · 65,000 mi“the contact owns a 2010 mercury mariner. the contact stated while attempting to pull out of a parking space, she became aware that the electronic power steering was not functioning properly. the eps warning light was illuminated. the vehicle was not taken to the dealer or an independent mechanic. the vehicle was not repaired. after investigating th…”
2023-09-09 · Unknown Or Other“my vehicle keeps throwing codes for the evap system. i have noticed many of these vehicles have to have their purge valve cannister replaced along with the selenoid for it. i have to replace mine. is that not a defect if the vehicle? i have owned several vehicles and never had this issue with any of them.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.