general problems of the 2010 Mercury Mariner

22 problems related to electrical system have been reported for the 2010 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Mercury Mariner based on all problems reported for the 2010 Mariner.

1 Electrical System problem

Failure Date: 09/04/2025

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 vehicle. We contacted the seller to try and return the vehicle and receive our money back, but the dealer refused and requested us to resell it.

2 Electrical System problem

Failure Date: 05/14/2022

When the weather is hot (close to 100 degrees or more) and I am driving with the a/c - my vehicle on 3 occasions will not start after parking the vehicle and trying to restart it. The red padlock sign blinks and it won't start. At first it is trying to turnover but then will continually sound worse and all other warning lights go haywire. I leave the car alone for half a day and it starts up again like nothing happened. On the fourth occasion, the car stopped while driving, just a quiet shutdown and the car glided. This time it did not work for over 24 hours and then started up again like nothing happened. Multiple mechanics and also the dealership cannot figure out the problem because by the time I have it towed to shop, it works again. They did a full check on the car and cannot find anything wrong and there were no diagnostic codes. This issue happens when the weather is hot and poses a safety concern as now it is shutting off while driving and I become stranded each time. (first incident happened 8/25/18, last incident 5/14/22) total of 4.

3 Electrical System problem

Failure Date: 12/04/2020

I was leaving work and driving down the highway and my power steering went out but then it came back and it kept doing it off and on . Luckily I only live 15 miles from work. Its happen before when I was in a turn but I didn't think much about it till it started doing it today thankfully traffic was light and I didn't have a accident.

4 Electrical System problem

Failure Date: 10/15/2019

Vehicle's electronic power steering turned off in the middle of driving, turning on highway, this has happened 3 times, seems like when the heat is on. Recall 14s05c shows up in service records from this car. Works was done my mahopac Ford, mahopac, NY. Reflash ic and pscm. This recall was apparently addressed, but the problem has come back. I just bought this car used two weeks ago. It did not have this problem until I turned the heat on. Not sure what to do.

5 Electrical System problem

Failure Date: 10/26/2018

Power steering suddenly stopped working while I was driving. The vehicle is extremely difficult to navigate but I was able to pull off the road to a safe area. After shutting the car off for 15 minutes and restarting the lack of power steering remained, but there was now a message saying "power steering assist fault". This car has several other electrical problems with regard to the a/c & blower, and also the drivers side window and dome lights work sporadically.

6 Electrical System problem

Failure Date: 07/06/2017

Switch for ac wont blow out air. Took it to valoline to add freon. . They said, it was full. . Cold worked for 5 days then ac stopped working at hotest time of month. . . Took vehicle back and they stated, it was full still but added more freon to make me happy. . After a few days no ac and I took to a mechanics business. The owner and 4 others stated that the belt is turning maybe they overfilled it. . Told me to take it back to valoline and have them take out all freon then put amount back in but not to full. I did, worked for 2 days now again no ac. Blower worked but no ac comes out. . I cant afford anymore visits. Now as of yesterday the blower will only work on number 4. 1 2 3 nothing comes out. Please assist me with this problem. . I have been so happy with this car for 3 years. I take excellent care of everything it needs. First Ford I ever owned. . . Hope its not the last one I own if this doesnt get solved. Thank you for this site. This is my last resort. . I have had it in shop to many times concerning this matter. . Denise saftey issue here . I was going to work very foggy and I turned on heater to clear windshild no blower worked on numbers 123 but 4 would. . Cant have it running full blast always. . Ac if full but wont work with blower on. . Being hot really makes me cranky and that can cause raod rage safety issue there too. Lol lol please help me. . .

7 Electrical System problem

Failure Date: 06/06/2016

While I am driving my car will all of a sudden turn off.

8 Electrical System problem

Failure Date: 03/14/2016

The contact owns a 2010 Mercury Mariner. The contact stated that it was difficult to turn the key in the ignition. The failure has occurred for two years. The vehicle was not taken to the dealer. The vehicle was not repaired. The manufacturer was notified. The VIN was unknown. The failure mileage was 59,000.

9 Electrical System problem

Failure Date: 06/21/2015

The contact owns a 2010 Mercury Mariner. While driving at approximately 75 mph, the vehicle suddenly stalled. The vehicle was restarted, but the failure recurred. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 52,000.

10 Electrical System problem

Failure Date: 02/23/2015

1. Outside review mirrors do not defrost. They were frozen and I was on the highway putting my life in danger because I could not see outside vehicles passing to be able to go right or left. Then a week later their was frost on the mirrors and still they would not defrost again I couldn't see other vehicles on either side of my vehicle. 2. There is a gear shifting problem as well. Whenever I take off at a stop my car kicks real hard and loud enough to scare me. I have reported this several times with the dealer that I bought my vehicle from and they cannot find the problem. They have heard it do this but cannot seem to find the problem.

11 Electrical System problem

Failure Date: 10/02/2014

Coming to a stop at a red stop light and then trying to accelerate from red to green light at an intersection my vehicle went into limp mode, it lost power. It would not accelerate pass 10mph. An engine light came on as a orange wrench light. I drove as I could and made to auto zone. They plug in the hand held car computer and it gave the code p2119. Which stands for throttle body.

12 Electrical System problem

Failure Date: 07/06/2014

P2112 throttle stuck. Removed throttle body 7-2-14 cleaned carbon/oil residue resulting from pcv recurc, and reinstalled throttle body, cleared codes. Driving 7-6-14 same symptoms (mil p2112 and limp home idle only) while in traffic. Idled out of traffic, shut engine off, key on engine off repeatedly tapped throttle pedal to work throttle body motor and plate. Cleared codes, drove home, pulled throttle body. Still clean with no carbon/residue or other signs of material that would obstruct throttle valve movement. Sourcing new throttle body now.

13 Electrical System problem

Failure Date: 10/01/2013

I have been having a problem with my 2010 Mercury Mariner for over a month. It is stalling out at random times and then the vehicle dies. Took to dealership several times and the computer is not detecting the problem so they cant determine what to fix. The dealership says it may me the throttle body, but this is not covered in my extended warranty and is a very expensive part to replace. I am a single mother with 2 kids and this is very dangerous when we are driving down the highway at 75 mph with traffic.

14 Electrical System problem

Failure Date: 08/07/2013

I was traveling along, with my daughter in the car, when it seemed to just shut off. I was only going 40mph but in a line of traffic. I pulled the car over, it was then I could tell it was sorta still running. I come to find out later it went into a ¿safe¿ mode. Since then my wife or I have barely drove it. We had a close friend check it out and it is the throttle body. I then did some research online and come to find out it seems I¿m not the only one with this problem. Is anyone out there making Ford motor company responsible for this? I called the dealership, where we purchased our vehicle new and was told there was nothing they could do, unless I paid for this. I feel this is unfair! my wife and I purchased this vehicle brand new with only 8 miles. Why should we be punished for what clearly is a defect in a Ford product? please help.

15 Electrical System problem

Failure Date: 07/29/2013

I had just gotten back from a long trip, and was stopped at a red light - I barely accelerated once it turned green, and the car lost complete and total power, in the middle of the intersection. A wrench light came on. No throttle was working as much as I pressed down. The car kept snail pacing until I got to an empty parking lot where I turned the vehicle off. I turned it back on and it reved itself, so I turned it back off. Turned it back on and all of a sudden it worked again. I took it to the dealer who claimed it was the "electronic throttle body" failing and charged me $98 for the diagnostic. I decided for a second opinion, and they took everything apart to see if it was something else since the car is only 3 years old and only has 30,000 miles on it. After much testing they concluded it was in fact the "electronic throttle body," and the repair cost me $595. Before this happened, 2 or 3 days prior, I felt the car was losing power and it was hard to get it to go at it's v6 potential. Car still hesitates and feels like the engine jumps out when it stops and moves again. . . Sure enough my engine mounts now need replacing, and that's anywhere between $350-$500. Another recall perhaps? it's been doing this since day 1, and my warranty ended about 6 months ago. Go figure. . . Just when 3 years was up! sigh.

16 Electrical System problem

Failure Date: 07/18/2013

My daughter was traveling in louisiana on business, when for no reason the SUV stopped on the interstate she phoned me in tears on the issue, she was stranded on the interstate for a short while. She got it started again after a few minutes. She drove for another few miles and it did it again. She finally made it to a dealer. The dealer ran a test that cost her 125 dollars only to tell her she had a bad electronic throttle body assembly. They informed her that the part was not available and would be days maybe weeks before they could get one. She than returned to her place of stay , that took about an hour because she could take the interstate and had to stop every few miles to restart the engine. What a huge inconvenience and frightened she would be rear ended. I hope a resolution is in the works for this safety issue.

17 Electrical System problem

Failure Date: 07/18/2013

Description was mad with complaint no. 10525937 I had entered the wrong type vehicle.

18 Electrical System problem

Failure Date: 07/11/2013

Car went into 'limp mode" at about 25 mph and the orange wrench warning light came on. Had to stop, turned off the engine and then restarted. Warning light went off but it occurred again in about 5 miles. Went to Ford dealer the next day and they could not find anything wrong nor duplicate the problem. Problem happened again a couple of miles after leaving the dealership. I immediately returned to the dealer and they once again couldn't find anything wrong. Two days later on I-95 the car went into "limp mode" the orange light came on and I drove to the side. The traffic was backed up so I was going about 25 mph when this occurred. When I restarted the engine this time, the "wrench" warning light went off but the "check the engine" light came on and remained on. Next day returned to the dealer and this time they said they found the problem and it was the throttle body. In researching on line I found that this is occurring with some frequency and would certainly like to see Ford take responsibility for issuing a defective part. As of now it looks like I will have to pay the bill and hope that the new part is not defective also. It is a real safety issue and hopefully this will be resolved.

19 Electrical System problem

Failure Date: 06/26/2013

Vehicle electronic throttle body (etb) was replaced at veterans Ford dealership in tampa, FL due to this part severly effecting ability of the vehicle to run properly (several times). Customer paid for this repair. Sometime after 3/4/14 when NHTSA completed their investigation, we received a notice that Ford was replacing this item. Since we already paid for the repair ($381. 32) at a Ford dealership, we tried to get the reimbursement that Ford owes us. We were informed we had to have the original receipt, which to this day is still packed up in storage if we have it at all because we moved from FL to nc and are still involved in buying a new home. The bottom line is Ford (corp) is refusing to honor their agreement to reimburse customers. The craziest part of this whole dilema is that Ford has and controls 100% of the information needed to process our reimbursement, but absolutely refuses to do so without the original receipt. I could understand if we had this repair done at some unrelated, third party service facility. However, we went to a Ford dealership and they have record of completing the repair and us paying them for the repair. So again, Ford has all the information (proof) in their possession to take care of this reimbursement, but refuses to do so. I have called the customer (dis)satisfaction department at Ford corporate, but that is like talking to a brick wall as far as anyone having in common sense, accountability or decency to do the right thing (certainly any kind of good will is lacking in that organization). So here I am having to complain to the NHTSA to get Ford to do what they promised in the first place. I look forward to a timely reply letting me know you guys have this handled. Additionally, Ford should be reprimanded severly for such assinine behavior and attitude. Maybe a consumer reporter needs to get involved in all this. Thanks.

20 Electrical System problem

Failure Date: 08/11/2012

On that date, I was driving home with my wife at approximately 2 pm. Suddenly, the car went off and the steering wheel went stiff. As I tried to move unsuscessfully, we went down to a slope of about 20 degrees. As a result, both of us had to be taken for emergency treatment for knocks, cuts and follow up checks. So far, it has cost us us $16,497. 00 and repair of the car us$6,853. 00. There has been other events where the car suddenly stops and the steering wheel becomes stiff. But, I don t use the car in the highway but only for shorts errands and within the area where we live. Its been a nightmare. I have changed the throtle casing module, the restraint control module, I put a rubber stop on the acceleration pedal, etc. Again, out of the accident it has been over 4 thousand dollars in trying to fix the car.

21 Electrical System problem

Failure Date: 08/25/2011

Short in left front headlight and for changed light bulb and 10 minutes after parking my car and owning it 1 1/2 months the car blew up.

22 Electrical System problem

Failure Date: 06/29/2010

The contact owns a 2010 Mercury Mariner. The contact stated that while driving at approximately 20 mph, the vehicle jerked then suddenly stalled without warning. The failure recurred several times. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 6,602.


Other Electrical System related problems of the 2010 Mercury Mariner


Mariner Service Bulletins
Mariner Safety Recalls
Mariner Defect Investigations