Problems owners report
Complaints filed with NHTSA about the 2009 Mercury Mariner, by the system named in each complaint. One complaint can name several.
- Steering167
- Engine53
- Power train44
- Vehicle speed control41
- Electrical system22
- Unknown or other15
- Fuel system, gasoline15
- Fuel/propulsion system15
- Service brakes11
- Engine and engine cooling7
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 3 injuries and 0 deaths reported
Compared with other years
NHTSA ODI complaints by model year
Fatal crashes in the US
From 2020 to 2023, 13 2009 Mariner vehicles were involved in crashes on US public roads in which someone died; 8 people died inside them, and 2 of the vehicles rolled over. This is a count, not a crash rate: it grows with the number of cars on the road.
NHTSA Fatality Analysis Reporting System (FARS), crash years 2020–2023 (public domain)
New York safety inspections
At its first New York inspection the 2009 Mercury Mariner failed the safety check 3.04% of the time — 21% more often than the average 2009 passenger car (2.52%). Median odometer at inspection: 133,038 miles.
2,498first inspections
3.04%failed on safety
133,038 mimedian odometer
NY DMV Vehicle Inspections (vezn-fmmk), initial inspections since Aug 2021 · how we count
Recalls
14V284000 · Steering29 May 2014 · 740,878 vehicles
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.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What Mercury told its dealers about the 2009 Mercury Mariner: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 10205008 | 6F35 Transmission - Fluid leak at left side halfshaft seal - built on or before 10/14/2013 |
| 10140323 | 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 Devices - Aftermarket Keyless Entry Keypad Code Access. Access to this site is granted through Dealer Program Enrollment System (DPES) and Dealer Principal, General Manager or Parts and Service Director can authorize users. Once authorized the retrieval process for master code can be obtained. The mast |
| 10138524 | 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 Devices - Aftermarket Keyless Entry Keypad Code Access. Access to this site is granted through Dealer Program Enrollment System (DPES) and Dealer Principal, General Manager or Parts and Service Director can authorize users. Once authorized the retrieval process for master code can be obtained. The mast |
| 10137113 | 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 originally installed systems are supported and certified to function correctly with other vehicle systems. If you suspect a system has been modified, the following resources can be used to verify original equipment: Monroney Label (Window Sticker), Professional Technician Society (PTS) OASIS tab select |
| 10109070 | The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a limited refresh rate when reading these PIDs and cannot display quickly enough to validate a concern. The PCM automatically monitors these inputs more accurately and will set diagnostic trouble codes (DTCs) when appropriate. Using these PIDs for diagnostics will lead to inaccurate results and improper ETB replacements. If a concern is intermittent and no DTCs are present, refer |
| 10095184 | 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 ORIGINALLY INSTALLED SYSTEMS ARE SUPPORTED AND CERTIFIED TO FUNCTION CORRECTLY WITH OTHER VEHICLE SYSTEMS. IF YOU SUSPECT A SYSTEM HAS BEEN MODIFIED, THE FOLLOWING RESOURCES CAN BE USED TO VERIFY ORIGINAL EQUIPMENT: MONRONEY LABEL (WINDOW STICKER), PROFESSIONAL TECHNICIAN SOCIETY (PTS) OASIS TAB SELECT |
| 10091151 | SOME 2008-2017 FORD/MERCURY/LINCOLN VEHICLES EQUIPPED WITH SYNC MAY GENERATE A VHR THAT IDENTIFIES A CONCERN WITH THE BRAKES AND SUSPENSION CATEGORY INDICATING SERVICE IS REQUIRED DUE TO A BRAKE SYSTEM WARNING LAMP BEING ILLUMINATED. IF THE PARK BRAKE WAS APPLIED WHEN THE VHR WAS GATHERING DATA FROM THE MAJOR VEHICLE SYSTEMS, THE BRAKES AND SUSPENSION MESSAGE WILL BE REPORTED AS THE VHR LOOKS FOR ANY WARNING LAMPS ILLUMINATED IN THE INSTRUMENT CLUSTER. RERUN THE VHR WITH THE ENGINE ON AND VEHICLE IN PARK, AND ENSURE THE PARK BRAKE IS DISENGAGED. IF THE SYNC VHR IS STILL REPORTING A CONCERN TO |
| 10090681 | SOME 2008-2017 FORD/MERCURY/LINCOLN VEHICLES EQUIPPED WITH SYNC MAY GENERATE A VHR THAT IDENTIFIES A CONCERN WITH THE BRAKES AND SUSPENSION CATEGORY INDICATING SERVICE IS REQUIRED DUE TO A BRAKE SYSTEM WARNING LAMP BEING ILLUMINATED. IF THE PARK BRAKE WAS APPLIED WHEN THE VHR WAS GATHERING DATA FROM THE MAJOR VEHICLE SYSTEMS, THE BRAKES AND SUSPENSION MESSAGE WILL BE REPORTED AS THE VHR LOOKS FOR ANY WARNING LAMPS ILLUMINATED IN THE INSTRUMENT CLUSTER. RERUN THE VHR WITH THE ENGINE ON AND VEHICLE IN PARK, AND ENSURE THE PARK BRAKE IS DISENGAGED. IF THE SYNC VHR IS STILL REPORTING A CONCERN TO |
| 10075273 | 6F35 TRANSMISSION - FLUID LEAK AT LEFT SIDE HALFSHAFT SEAL BUILT ON OR BEFORE 10/14/2013 ISSUE Some 2009-2014 Escape, 2009-2011 Mariner, 2010-2014 Fusion, 2010-2011 Milan, 2012-2014 Edge/Explorer, and 2013-2014 Taurus/MKT/MKZ vehicles built on or before 10/14/2013 and equipped with a 6F35 automatic transmission may exhibit a fluid leak from the left hand (LH) transmission halfshaft seal due to wear on the transmission case bushing. |
| 10057860 | FORD: IN VALVE BODY, A WORN SOLENOID PRESSURE REGULATOR VALVE HAS DIAGNOSTIC TROUBLE CODE (DTC) P0735 STORED AND INDICATION OF REPAIR HISTORY WAS THE VALVE BODY WAS NOT REPLACED PREVIOUSLY. MODEL 2009-10 ESCAPE, MARINER, 2010 FUSION, MILAN. *PE |
| 10056710 | MERCURY/FORD: IN ONE OR MORE SPEED SETTINGS, ELECTRONIC MANUAL TEMPERATURE CONTROL (EMTC) A/C SYSTEM IS WARM AND/OR LACK BLOWER MOTOR OPERATION IN SETTINGS DUE TO DAMAGED BLOWER MOTOR RESISTOR CAUSED BY WATER ENTERING HEATER AND EVAPORATOR CORE HOUSING. MODEL 2008-12 ESCAPE, MARINER. *PE |
| 10056183 | FORD: THE THROTTLE BODY INTERNAL MOTOR CONTACTS MAY BE CONTAMINATED, RESULTING IN AN ELECTRICAL, INTERMITTENT, CONNECTIVITY, CAUSING MALFUNCTION INDICATOR LAMP (MIL) OR WRENCH LIGHT TO BE ILLUMINATED. MODEL 2009-2012 FUSION, MILAN, ESCAPE, MARINER. *PE UPDATED 11/18/14. *PE |
| 10055355 | FORD: THE WRENCH LIGHT WILL ILLUMINATE WHEN 4X4 FUNCTION IS INOPERATIVE DUE TO ACTIVE TORQUE COUPLING SOLENOID COIL WIRING BEING BROKE, BUT A KIT IS AVAILABLE TO SERVICE REAR AXLE ASSEMBLY/REAR DRIVE UNIT (RDU), AT LOWER LEVEL. MODEL 2008-2012 ESCAPE, MARINER. *PE |
| 10055321 | MERCURY/FORD: ON SOME VEHICLES, THERE IS A FLUID LEAKAGE, COMING FROM LEFT HAND (LH) HALFSHAFT SEAL OF THE AUTOMATIC TRANSMISSION AND A SERVICE KIT IS AVAILABLE NOW, FOR REPAIR. MODEL 2009-2012 ESCAPE, MARINER, FUSION, MILAN. *PE |
| 10054926 | FORD: THROTTLE BODY WILL DEVELOP CONTAMINATION ON INTERNAL MOTOR CONTACTS RESULTING IN AN INTERMITTENT ELECTRICAL CONNECTIVITY AND MALFUNCTION INDICATOR LAMP (MIL) OR WRENCH LIGHT WILL ILLUMINATE. MODEL 2009-2013 FUSION, MILAN, ESCAPE, MARINER. *PE UPDATED 5/7/14. *PE |
| 10054916 | FORD/MERCURY: IF DIAGNOSTIC CODE B2278 IS STORED IN POWER STEERING CONTROL MODULE (PSCM), IT NEEDS REPLACING WITH TORQUE SENSOR SERVICE KIT THAT IS AVAILABLE AND IF NOT, DOES NOT APPLY. MODEL 2008-2012 ESCAPE, 2008-2011 MARINER. *PE |
| 10054575 | FORD: ON THE LEFT HAND HALF SHAFT SEAL, THERE IS A FLUID LEAK FROM THE TRANSMISSION BECAUSE OF WEAR ON CASE BUSHING. MODEL 2009-2012 ESCAPE, 2009-2011 MARINER, 2010-2012 FUSION, 2010-2011 MILAN. *PE |
| 10053656 | FORD: DUE TO AN INTERMITTENT LOSS OF RPM OR LACK OF ACCELERATION, IN SOME VEHICLES, WITH ILLUMINATED WRENCH LIGHT, DIAGNOSTIC TROUBLE CODES (DTCS) P2111, P2112 MAY OR MAY NOT BE STORED IN POWERTRAIN CONTROL MODULE (PCM). MODELS 2009-12 ESCAPE, MARINER, FUSION, MILAN. *PE |
| 10052191 | FORD/LINCOLN/MERCURY: SOME VEHICLES MAY EXPERIENCE AN ILLUMINATED MIL OR SAFETY STOP NOW MESSAGE, OR A NO START CONDITION OR POSSIBLE MISFIRE OR ROUGHNESS AT IDLING THROUGH 2000RPM OR A LACK OF ACCELERATION. MODELS 2009-12 ESCAPE, 2009-11 MARINER, MILAN, 2010-12 FUSION, 2011-14 MUSTANGS, 2013 C-MAX, FUSION, MKZ HYBRID. *PE |
| 10040948 | FORD: THERE MAY BE A LEAKING/STUCK CANISTER PURGE VALVE WHICH CAN CAUSE MULTIPLE DRIVING SYSTEMS. THE MALFUNCTION LIGHT MAY BE ON WITH OR WITHOUT STORED TROUBLE CODES. *RM |
| 10039137 | FORD: THE TRANSMISSION MAY LEAK FLUID FROM A SEAL. 2009-2010 ESCAPE/MARINER. *RM |
| 10037561 | FORD: VEHICLES MAY RUN ROUGH, HARD START AFTER REFUELING, CLICKING NOISE UNDER HOOD, AND HAVE TROUBLE CODES STORED. *RM |
| 10037097 | FORD: SOME HYBRID VEHICLES MAY HAVE A MALFUNCTION LIGHT ON WITH TWO POSSIBLE FAULT CODES. *RM |
| 10037083 | FORD: ON VARIOUS 2009-2010 MODELS THERE MAY BE A MALFUNCTION LIGHT ON WITH FIVE POSSIBLE FAULT CODES. *RM |
| 10034548 | FORD/MERCURY: STEERING COLUMN POP/CLUNK NOISE ON TURNS. SOME VEHICLES MAY EXHIBIT A POP OR CLUNK NOISE FROM THE STEERING COLUMN AREA WHILE TURNING. THIS NOISE TYPICALLY OCCURS QUARTER TURN BEFORE THE STEERING WHEEL REACHES IT'S END OF TRAVEL STOP AND TYPICALLY GOES AWAY WITH WEIGHT OFF THE WHEELS. *PE |
NHTSA manufacturer communications (public domain)
NHTSA investigations
DP15001 · Steering:electric power assist systemopened 1 Apr 2015 · closed 14 Jun 2018
Loss of power steering while driving
PE13003 · Engineopened 21 Feb 2013 · closed 28 Feb 2014
Electronic Throttle Body Malfunction
NHTSA Office of Defects Investigation