general problems of the 2009 Mercury Mariner

21 problems related to equipment have been reported for the 2009 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Mercury Mariner based on all problems reported for the 2009 Mariner.

1 Equipment problem

Failure Date: 03/01/2024

Months back there were times the power steering would go out, it would be for short amount of times and always came back. As of 40+ days ago the power steering has totally gone out and has not once come back. The dash says "power steering assist fault" the other issue is the wrench on the dash. It's normally after driving for quite some time. Even if there has been a break on the car while grocery shopping etc. When it comes on the car goes into limp mode. Very dangerous as we cannot tell when it'll happen. There has been multiple times the light turns green we take off, get to about 15-20mph and she just stops. The dash reads to safetly pull over and I believe it says to shut off the car. This has been happening for 5+ months. There is also random over heating when that happens. This is based on how I remember it. Because of the safety issues I have not driven the vehicle. My husband drives it because he can handle no power steering better then me. . . Not that it's better for anyone to use. .

2 Equipment problem

Failure Date: 04/22/2022

The passenger side front tire became disconnected while driving. The frame rusted and broke causing the tire to separate from the vehicle. The tow truck driver commented that he had never seen this before. I had the vehicle towed to firestone only to have them tell me they could not fix the vehicle. The vehicle has not been thoroughly inspected, but is available to be inspected. I noticed a change in the steering wheel position for about a week prior to the tire separating. If the tire would have separated from the vehicle while driving on a highway or busy street, more damage and possible injury could have resulted.

3 Equipment problem

Failure Date: 01/31/2022

I was making a turn and the vehicle seemed as if the steering locked up. It randomly does this and is starting to be more and more often. It has already made me run off of the road and hit a culvert causing even further damage.

4 Equipment problem

Failure Date: 12/15/2021

My wife is driving the car and the power steering quits working several times. Off and on. Speed varies. . Very scary!.

5 Equipment problem

Failure Date: 08/15/2020

The vehicle ac unit water drains directly over the front sub-frame and rusts through the frame, at which point the front driver side suspension will collapse and loss of steering results. This problem was acknowledged for some escape vehicles, but not its Mercury Mariner equivalent, even though it shares same part/problem. Dealer refuses to cover repair and cust sevice suggested I contact NHTSA.

6 Equipment problem

Failure Date: 08/15/2020

Last year in April I got the car , didn't have it for a week the power steering went out . I got it fixed . Here it is 2020 of August , the power steering assist came on . The steering wheel locked up on me . I don't have the money to keep replacing this same part . I looked into the recalls for the vehicle . I seen a couple , called a number I seen they said the recall expired. So I'm back to square one . I don't know exactly what part I need .

7 Equipment problem

Failure Date: 01/01/2019

Faulty seal on the rear window has caused water to seep into the hatch release mechanism. Rear door will not open. There is no repair that can fix this issue. Cannot change rear lights due to being unable to open the rear door.

8 Equipment problem

Failure Date: 11/23/2016

My truck stalls. I purchased a new battery, and it continues to stall while driving or idling.

9 Equipment problem

Failure Date: 02/25/2016

Slight grinding noise when making a hard left turn, as into a driveway. (relitively slow speed, not creeping).

10 Equipment problem

Failure Date: 07/17/2015

Was using cruise control down the road doing 45 miles per hours. While on a straight stretch and going up slight hill car was fine. When I started to go down the slight hill car seemed to sound like it was in neural gear and my rmps jumped to between 3 and 4. I looked to see if some how the car got accidently shifted into neutral and it wasn't it was still in drive. So I turned the cruise control off and everything went back to driving and sounding normal. This is now the third time this has happened. We just purchased this car and of course limited warranty is now over and this is now happening. Was wondering if there was a recall on something like this or if maybe other people are having this problem also. Please let me know as I feel this is now a unsafe vehicle and I wish I would of know this was gonna happen before I shelled out 12,000 for it because now I don't want to drive it especially with my children or my newborn grandson in the vehicle with me.

11 Equipment problem

Failure Date: 01/04/2015

Stopped to eat and keys would not come out of the iginition.

12 Equipment problem

Failure Date: 07/31/2014

Car suddenly went into limp home mode.

13 Equipment problem

Failure Date: 10/09/2013

My Mercury Mariner 2009 has had issues for the past year in regards to the vehicle unexpectedly goes into "limp home mode" at reduced power, like while sitting at traffic light or stop sign. Also, the wrench light will go on while driving and I lose acceleration power. I can push the gas pedal down and nothing happens, the engine is still on but no acceleration power. I will coast until I can get to a safe spot to have to power it off and then restart it. This is very dangerous while driving in rush hour back and forth to work each day. The car lags when accelerating and also pumps while when coming to a stop. I do not feel safe in the car and wish I had never bought it. I can't even make a trip to the store without worrying about the wrench coming on or it going into limp mode.

14 Equipment problem

Failure Date: 09/20/2013

Throttle body stuck open.

15 Equipment problem

Failure Date: 08/29/2013

Upon accelerating, vehicle stalled. Occurred on Aug 29 and again on sept 4. Had to glide to a stop on highway shoulder, put car in park, turn off, and restart. I've had intermittent issues for a while where car doesn't accelerate when pushing on the accelerator, then it lurches forward. Ford dealership said it was throttle body and repaired it. Upon looking online, this seems to be an ongoing issue with certain escapes and Mariners.

16 Equipment problem

Failure Date: 08/08/2013

The vehicle has stalled while in motion 6 times now, while stopped 3 times. Stalled once while driving upwards of 40mph. I had to stop in the middle of the street, put emergency blinkers on, and restart the car. Vehicle seems to spontaneously falter in acceleration and loses power. Turning off ignition and restarting engine fixes the problem but it will then reoccur at an unknown time. Some incidences have been in the same day, others have been up to a week apart.

17 Equipment problem

Failure Date: 07/23/2013

Driving about 40 mph vehicle lost speed. Could not accelerate . Came to a stop point had to turn off vehicle. Turn back on and was ok. Happened twice. Went for a diagnostic and was reported a problem with throttle actuator control system -. Stuck closed. ???? check with dealer $435. 00 . Check online and found out that Mercury Mariner is having this problem but no recall ?.

18 Equipment problem

Failure Date: 06/12/2013

Car stalls continuously.

19 Equipment problem

Failure Date: 06/11/2013

On June 11th, 2013, I was turning a corner and my vehicle was not allow me to accelerate. I was able to pull over to the side of the road and turn the vehicle off. I sat with the vehicle off for about five minutes and was able to start it back up. I then drove a few feet, and it stalled again. I then turned it back off and let it sit for a few more minutes, in which I was able to restart it and drive home. He same problem has occurred at least 5-10 more times since then. Since then I have had the throttle body cleaned, put the issue still exist. The most recent occurrence was this morning at 30 am. I contacted after-market auto part stores and they do not carry a throttle position sensor. I contacted the local Ford dealership and they told me that the part was on back order and it would take some time to get the part in.

20 Equipment problem

Failure Date: 12/15/2012

While traveling at 55 mph, power steering stopped working making vehicle very hard to steer. By turning key off and restarting, while tugging on steering wheel, power steering will start working and may last 30 minutes or 3 minutes. While working, steering wheel shakes and makes noise. Vehicle pulls to the left. Ford denies having had this problem before and wants to replace steering column for $1,396. 57. Complaints on the internet about this problem are numerous. I do not want to buy another defective steering column and don't understand that power steering problem would be solved.

21 Equipment problem

Failure Date: 08/04/2011

I was on a high traffic freeway coming home from a maternity appointment (I was 7months pregnant and it was hot) and going 70mph middle lane. When my car just cut off. I was still moving but my dash was off check engine light came on and I pulled to the side. I could get it started back up but it went off again. I finally got off on a ramp. I had to have my car towed and rent a car. Between the tow rental and work on my car the total was (est 1400). Then a year later it began every now and then stalling or surging while I was driving. It has progressively worsen. Now it has been when I stop or let off the gas it goes dead. Recently went to an auto shop and they hooked it to the computer. It said it was my throttle body. It was cleaned and all was fine for a week. And now it is doing it again. I finally did google throttle body and Mercury Mariner. I found other complaints.


Other Equipment related problems of the 2009 Mercury Mariner

Equipment problems
21
Air Conditioner problems
1

Fuel Economy of Mariner Vehicles
Mariner Service Bulletins
Mariner Safety Recalls
Mariner Defect Investigations