2009 Mercury Mariner Hybrid problems & reliability
21 owner complaints filed with NHTSA for the 2009 Mercury Mariner Hybrid. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Steering | 8 | 38% |
| Vehicle Speed Control | 6 | 29% |
| Engine | 4 | 19% |
| Electrical System | 3 | 14% |
| Fuel/propulsion System | 3 | 14% |
| Service Brakes | 2 | 10% |
| Electronic Stability Control (esc) | 1 | 5% |
| Power Train | 1 | 5% |
| Service Brakes, Electric | 1 | 5% |
| Service Brakes, Hydraulic | 1 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 93,000 miles (middle 50% between 40,000 and 123,250 miles), based on 21 complaints that included mileage.
Complaints by incident year
What owners report
“Vehicle steering is intermittently going out and driver is unable to turn the vehicle. I have contactted ford and there is an existing recall (14s05) for this very item and my vehicle (year, make & model) is listed but they say my specific vehicle does not qualify.”
Steering · filed May 21, 2019
“Tl* the contact owns a 2009 mercury mariner hybrid. While driving approximately 25 mph, the power steering failed without warning and the steering became difficult to turn. The vehicle was not taken to be diagnosed or repaired. The vehicle was not included in nhtsa campaign number: 14v284000 (steering). Neither the…”
Steering · filed Oct 25, 2018
“Electronic power steering module failure, replace entire module & column for $1698.89. Said previous recall was performed and ford bears no responsibility.”
Steering · filed Oct 2, 2018
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Pedestrian alert sounds
Defect Petition DP22005 · opened Jan 27, 2023 · closed Aug 7, 2023 · led to recall 22V063000
- Loss of power steering while driving
Defect Petition DP15001 · opened Apr 1, 2015 · closed Jun 14, 2018
Technical service bulletins
2 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2009 Mercury Mariner Hybrid.
Ford/mercury: some hybrid vehicles may require a unique bleed procedure after a replacement for one or more of hydraulic brake system components. *pe
ASI-22242 · Service Bulletin/Repair Instructions · issued Mar 1, 2012
Ford/mercury: traction control light with dtc c1440. Some vehicles built may exhibit the traction control light on with dtc code c1440. If the vehicle is operated for an extended period following the illumination of the…
TSB-09-15-1 · Service Bulletin/Repair Instructions · issued Dec 9, 2009
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 2009 Mercury Mariner Hybrid in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2009 Mercury Mariner Hybrid?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 93,000 miles — budget accordingly if the car is approaching that mileage.