The contact owns a 2009 Mercury Mariner. The contact stated that while driving at undisclosed speeds on several occasions, the steering wheel started shaking abnormally. The contact added that on several occasions while driving at undisclosed speeds, the vehicle lost power steering functionality, but the vehicle regained power steering functionality shortly afterwards. The "Power Steering Assist Fault" message was displayed on one occasion. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 117,900.
Mercury Mariner loss of power problems
141 of the 1,296 owner complaints about the Mercury Mariner describe sudden loss of power, most of them for the 2008 model year.
- owner complaints
- 141
- worst model year
- 2008
- typical repair cost reported
- $1,500
- typical mileage
- 99,000
Is there a fix? No recall or service bulletin covers this area of the car yet.
By model year
Often reported together
Power steering loss 66Stalling 15Check engine light 14Jerking 6Won't shift 5Overheating 3Harsh shifting 3Engine failure 3
Trouble codes mentioned
P2112 4P2111 3B1342 2P2119 1B2290 1B2278 1
What owners say
The contact owns a 2009 Mercury Mariner. The contact stated while attempting to drive out of the driveway, the vehicle stalled and lost power. The contact stated that several unknown warning lights were illuminated. The vehicle was then driven to an independent mechanic to be diagnosed. The vehicle was diagnosed with electric power steering failure. The local dealer was contacted; however, the vehicle was not repaired. The contact stated that the failure persisted. The manufacturer was made aware of the failure. The failure mileage was approximately 233,812.
Power steering stopped working completely.... was taking a turn and the steering became stiff and shook a little and went back to normal. Parked the car. started the car 2 hours later and steering completely stiff... no power steering. a quick google search of this common issue will tell you : Ford owners forum groups with the same issue, complain that Ford apparently only did reprogramming and did not replace the actual part causing the issue, when checking the codes, it did not show the failure yet, so they reprogrammed the unit to check the box Ford completed the safety recall. Recall 14V284000: Loss Of Power Steering Assist the federal safety agency Campaign ID Number: 14V284000 "STEERING:ELECTRIC POWER ASSIST SYSTEM" (5/28/2014) Summary: 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: 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. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2009 Mercury Mariner. The contact stated that while her son was driving at various speeds, the vehicle intermittently experienced a loss of power steering assist. No warning light was illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact related the failure to the federal safety agency Campaign Number: 14V284000 (Steering); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the federal safety agency Hotline. The failure mileage was approximately 170,000.
The contact owns a 2009 Mercury Mariner. The contact stated while driving 30-35 MPH, the vehicle lost power steering functionality. The contact was able to pull to the side of the road. The contact turned off and restarted the vehicle after 15-20 minutes, and the power steering became functional. The contact was able to continue driving. The contact stated that the failure recurred several times while driving. The dealer was contacted and charged a fee for diagnostic testing. The vehicle was not diagnosed or repaired. The contact related the failure to the federal safety agency Campaign Number: 14V284000 (Steering); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 131,000.
The contact's fiancée owns a 2009 Mercury Mariner. The contact stated that the vehicle was previously serviced under the federal safety agency Campaign Number: 14V284000 (Steering); however, a month after the recall repair, the vehicle lost power steering functionality while driving at an undisclosed speed. The dealer was notified of the failure and informed the contact that a fee would be charged for a diagnostic test. The vehicle was not diagnosed. The dealer later informed that the software for the power steering control module (PSCM) was previously updated under the recall; however, the manufacturer informed the contact that there was no record of the recall repair in the vehicle repair history. The manufacturer referred the contact to the federal safety agency Hotline for assistance. The vehicle was not diagnosed or repaired. The failure mileage was unknown.
The contact owns a 2008 Mercury Mariner. The contact stated while driving 50 MPH, the vehicle lost power steering functionality. There was no warning light illuminated. The vehicle was taken to a local mechanic who replaced the steering sensor however, the contact stated the failure persisted and the local mechanic was unable to repair the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline. The approximate failure mileage was 160,000.
Power Steering Assist Fault. Loss of power steering.
The contact owns a 2009 Mercury Mariner. The contact stated while starting the vehicle, the vehicle lost power steering functionality. The contact stated that the steering wheel was locked. The message "Power Steering Assist Fault" was displayed. The dealer was notified of the failure and referred the contact to the manufacturer for assistance. The vehicle was not diagnosed or repaired. The contact stated that the vehicle was previously repaired under the federal safety agency Campaign Number: 14V284000 (Steering) however, the failure persisted. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 150,000.
Lost all power steering. Cannot steer or turn my steering wheel
Related recalls
No recalls on record for this model year.
Questions about the Mercury Mariner loss of power
Which Mercury Mariner years have sudden loss of power problems?
The model years with the most reports are 2008 (49 complaints), 2009 (42 complaints) and 2010 (37 complaints).
How much does it cost to fix sudden loss of power on the Mercury Mariner?
Owners who mentioned a price put the repair at about $1,500 (median of 13 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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