2010 Mercury Mariner steering problems
61 owner complaints filed with NHTSA name the steering on the 2010 Mercury Mariner — 23% of all complaints for this model year.
What owners report
“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…”
filed Aug 11, 2026
“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…”
filed Dec 23, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Affected vehicles have a steering torque sensor that may not be able to properly detect…Campaign 14V284000 · May 29, 2014
Steering problems in other Mariner years
| Year | Reports | Share |
|---|---|---|
| 2011 Mariner | 20 | 23% |
| 2009 Mariner | 167 | 53% |
| 2008 Mariner | 297 | 64% |
| 2007 Mariner | 1 | 3% |
| 2006 Mariner | 9 | 14% |
| 2005 Mariner | 2 | 3% |
Other reported problem areas on the 2010 Mercury Mariner
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.