Engine And Engine Cooling Problems of Mercury Mariner - part 2

Mercury Mariner owners have reported 93 problems related to engine and engine cooling (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercury Mariner based on all problems reported for the Mariner.

36 Engine And Engine Cooling problem of the 2011 Mercury Mariner

Failure Date: 01/03/2014

The vehicle lost all power from the motor and I had to cross lanes to get to the shoulder while free wheeling. This has now happened on 3 occasions. The motor was still running but with no pulling power. Once I had switched the motor off and waited a few moments I was able to restart and the vehicle operated perfectly.

See all problems of the 2011 Mercury Mariner 🔎.

37 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 01/01/2014

I suffered an accident because while driving in a highway, I could not steer the wheel and the engine stop working. I wrote before because of what happened and have not received an answer. What can I do? thank you.

See all problems of the 2010 Mercury Mariner 🔎.

38 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 12/30/2013

While driving, the vehicle started losing power and the wrench light came on; stopped and had a hard time cranking but was able to go on. 2nd time pulling onto a busy street, same incident, able to get to center lan and recrank this time surging forward but gained control and went on, very unnerving situation, scared to drive long distances.

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39 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 12/22/2013

Was at stop light completely stopped. When the light turned green, I stepped on the accelerator and my car did not accelerate. The engine light and another light came on. I tried multiple times to move the car and nothing happened. I powered my car down and restarted it, at this time the car started moving again when I pressed on the accelerator.

40 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 11/20/2013

While driving in heavy traffic in center lane of three line highway. Vehicle suddenly lost power creating a emergency situation. I had to force traffic to allow me proceed to side of the road. Endangering myself and my family, I sat for about 30 min. Before I could move the vehicle.

41 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 11/01/2013

My wife was driving in town and the car began to "buck" and slow down. After a few minutes the accelerator had no effect on the engine. It appeared to be idling only. She pulled off the road and stopped the car, waited a10 minutes or so, and started it again. There was no difficulty starting the car, but again the accelerator had no effect on the engine speed. We had the car towed to the local dealership where it was diagnosed with a bad throttle body and throttle motor. The repairs cost approximately $500.

42 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 10/22/2013

Car lost power and stopped while driving. Engine light came on then went off.

43 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 10/07/2013

When driving at a slow speed of 20-25 mph, the vehicle stopped accelerating and bucked a little. The wrench (powertrain) signal light up on the dash, so I proceeded to pull over, put the car in park, and shut it off. After a few minutes I turned it on again and all seemed fine, though the car was now slow moving and less smooth through shifting. The same thing occurred 9 days later, with the vehicle responding even more slowly afterwards.

44 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 09/20/2013

Throttle body stuck open.

45 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 09/13/2013

Driving to work on 1431, the car felt as though it hit a bump, lost all ability to drive. Pulled over to side of road, turned car off for about 10 to 15 seconds and then back on. At this point it seem to operate properly. Then about threee miles down the road it did the same thing again. This time there was no shoulder to pull off on, so traffic was tied up. Was traveling at about 40 mph this time. Did the same thing, turned off and then back on and seemed to work normal. Later that evening going home from work the car did the same thing, two more times before I reached home. One time as I was going from palmer to 1431 on a curve. The next time it was on a slight incline going home. The icon on dashboard was a wrench which indicates it had something to do with the throttle control. Took to dealer and they confirmed it was a defective throttle control unit, and charged $650 to repair. Beleieve that this is/was a serious problem safety wise and should have been covered by Ford.

46 Engine And Engine Cooling problem of the 2011 Mercury Mariner

Failure Date: 09/10/2013

My son and I were on the way home from football practice around 8:30pm and as I was turning right from a stop light the vehicle started slowing down and shaking. I pulled right over turned the car off and on. Once I got back on the road it did it a second time and so I proceeded to pull over and turn car off and on again. I was close to home and finally made it home.

47 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 09/06/2013

2009 Mercury Mariner. I had just pulled into the store parking lot the car was in park but running. When all of a sudden it cut off lights on dash board came on. . . I was able to restart the car on the way home every stop light I stopped at the car would cut off. . . Took to auto repair shop they diagnosted it but nothing came up on machine. Car ran fine for the rest of the day. On the way to work that Monday the car stop in the middle of the road I was able to coast over the wrench icon lite came on. Cut the car off started it back up and drove to work. . . . Now the car is doing it every 5-10 miles stopping wont let me accelerate and the wrench icon is coming on. . . . This is very dangerous. . . . . . This needs to be recalled. If everyone is having the same problem. . . . . .

48 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 09/05/2013

While driving 65 mph in metro DC rush hour traffic, the vehicle suddenly lost power (engine still running but no acceleration). I had to cross over 4 lanes of traffic to reach the shoulder (very dangerous). I turned the vehicle off and restarted (sounded like it was "flooded"). I took the vehicle to the dealer for evaluation today, but came across many common complaints online regarding this exact issue and also learned that NHTSA was conducting an investigation. I just wanted to add my case to this issue. This could be a very serious and dangerous problem as it happens at high speeds and the vehicle slows rapidly.

49 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 08/28/2013

We were traveling down the highway at 60 mph when the engine went dead like the switch was cut off. I tried to restart the engine and it would try to start then go dead. I did this 10 times and it finally started. I took it directly to the local Ford dealer. A computer check did not show any problem. The dealer said he did not know what to work on and said to return it when it happens again.

50 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 08/27/2013

This actually first occurred on Friday. I was traveling on the thruway at about 65mph when the car felt almost like it downshifted and then I totally lost acceleration and the wrench light appeared on the dash. I limped to the side of the road and the car jerked and sputtered before I shut it off. After a few minutes I restarted the vehicle and it sounded like it was flooded at first then it turned over normally. I was an hour from home and made it back without further incident. I took it to the dealer the next morning and it did not show any codes. They suggested I replace the purge valve, and as I had a busy week of work related travel scheduled I went ahead and had them do it for $120. Better safe than sorry. Right? today I get an hour from home and it happens again. I call my dealer and they suggest I find the closest Ford dealer and take it there immediately. Closest Ford dealer couldn't take me for 2 weeks!! I was an hour from my destination, so I decided to chance it. I drove about 20 minutes and it happened again. Same exact scenario. I started it again, got back on the road and drove 10 minutes and again, except this time the engine light also came on. I called roadside assistance and was towed to a garage. I am 2 1/2 hours from home and driving a rental. Garage will diagnose and hopefully fix tomorrow. Service tech said if he had to diagnose without a code he would say throttle body! it also sounds like this is not covered by my 5 year/60k warranty either. With all of the similar stories I have read online Ford needs to be forced to do a recall and reimburse us all for our expenses.

51 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 08/26/2013

2009 Mercury Mariner with about 90,000 miles. Was on the freeway driving about 65-70 mph when suddenly the power to car cut off - was not able to accelerate vehicle; drove to right side of the road. Car was still on, but gas pedal would not work, wrench light was on, car idling very roughly. Turned car off. Turned car back on, wrench light was off, drove another 30 minutes to destination without incident. In the two hour drive home, the car cut off five more times. I heard a bell alert audio sound a few times, but the only light that came on was the wrench just as the power cut off. The very last time it happened, the engine light came on, and stayed on even after restarting the car. I feel very thankful to have got home alive and without getting into an accident. Dealer recommends a 90m service package ($547), a diagnostic test ($104), and possibly a throttle body and/or sensor ($300-ish).

52 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 08/18/2013

I was leaving a soccer game and the car went to about 40 mps and the wrench light came on and the pedal went limp. I pulled over and stopped the car and the car started shaking like it was out of time. I put it in part and shut off the car when I turned the car back on the light was off. I was able to drive 20 miles back and forth and then it did the same thing again. I have taken it to run the codes and there were none. Today 8/31/13 it did the same thing again and now finally the engine light came on. Codes were ran at autozone and p1212 throttle body sensor finally showed up. I had already checked the web the first time that it did it after talking with a mechanic that works at Ford and he told me what it was and that there was no recall. I am very upset. I just purchased this car less than three months ago!!! single mom someone help!!!.

53 Engine And Engine Cooling problem of the 2005 Mercury Mariner

Failure Date: 08/12/2013

On August,2013 I went got my vehicle smoged . It passes good. Then the next day I see engine light air bag light. Then goes off when I stop. So I try take to a mechanic who I spend a good like almost 800 still light is on now bottom. Now the car dash board and the radio are so hot, it felt like something may cause a fire! I was very scared! I was near a Lincoln dealership who had a service center in duarte. Ca. I never knew. A pcm was a part of a tuneup! please this is a 2300! and I'm putting out another 1288!.

See all problems of the 2005 Mercury Mariner 🔎.

54 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 08/02/2013

On several occasions the vehicle would suddenly loose power from highway speeds and limp to the side of the road. A light would come on that looked like a wrench. Once the vehicle was stopped and restarted I was able to move on normally until the next episode which began to come more frequently. After the first incident I immediately went to my Ford dealer and spoke to someone in service who told me they could hook the car up to the computer but since the wrench light went out it would most likely show nothing and I would have to pay $100 for this service. I have an extended warranty with a $100 deductible that was going to run out in 400 miles. I have the vehicle in right now and they just called and told me the throttle body needs to be replaced and it is not covered under the extended warranty and will cost me over $500.

55 Engine And Engine Cooling problem of the 2010 Mercury Mariner

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.

56 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 07/28/2013

I was on a major expressway when the vehicle starting decreasing speed. I went from 55 mph to 45 to 35 to 25 to 15 to 5 and the stopped. Luckily traffic was light and when this started, I pulled over to the shoulder of the road which was close to an exit. I somehow got the SUV home, starting the engine, it dying out and going a couple of feet over and over again. We took the vehicle to our auto ship and they said that Ford had a problem with the throttle and gave us a north carolina consumers council article. They did not have the digital equipment to fix and referred us to Ford dealership. Ford dealership advised it was the throttle. I talked to Ford customer service and they advised there was no recall and there was nothing they coujd do. I we spent $362. 56 on throttle and two letters later Ford will do nothing since they say we do not have the extended warranty and we are beyond three years/36,000 miles. I was afraid when the car died out on the expressway.

57 Engine And Engine Cooling problem of the 2011 Mercury Mariner

Failure Date: 07/25/2013

As I was driving my 2011 Mercury Mariner it suddenly lost the power to accelerate (engine still running). The wrench light illuminates at this time. I could not do anything to increase speed (pressing on the accelerator did nothing). The only fix is to shut down the engine and re-start. The mileage is 69,xxx. This first occurrence happened on 7/25/2013, however, the same symptoms have occurred randomly several times since that time. I explained the symptoms to my local Ford dealer service department and indications are a defective throttle body.

58 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 07/25/2013

My husband was driving the car at 65 mph on the highway and the care went limp and would not accelerate. He had to pull over to the side and restart the car. This happened to him 3 times and me one time. I took it to a dealership and it is the throttle body. You have received several complaints and there is an ongoing investigation. In addition, the dealership was going to overcharge me for the repair. Please do everything in your power to get Ford to recall this party and reimburse the customer before there is a fatality.

59 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 07/24/2013

My 2010 Mercury Mariner went into limp mode and would not respond to throttle inputs. I researched this issue and learned that this problem appears to be related to a faulty throttle body or electronic control panel for the throttle body. This an extremely dangerous condition as it appears at random without warning. I believe this must be a defect that has been known to Ford for some time and needs to be the subject of a recall.

60 Engine And Engine Cooling problem of the 2006 Mercury Mariner

Failure Date: 07/21/2013

While building speed via an on-ramp on CA freeway 680, the transmission began to fail. Within roughly 200 yards, the car lost power and, thankfully, I was able to get my car to the side of the freeway. The first time I was able to get the car to work again, I was only able to drive about 50 yards. I then let the car 'rest' for about 20-30 minutes (while I contact my roadside assistance company). After that amount of time, I tried the car again and was able to drive to the next off-ramp (industrial way, benicia, CA). At the stop sign of that off-ramp, the car failed again and I chose to have it towed instead of continue trying to make it work properally. My Mariner is a 2006 with only 77,541 miles! my car eventually got to a transmission shop to be fixed, but it was in my research of the problem that I found failing/faulty transmissions to be a very common and known issue for Mariners with low mileage (model years of 2005-2011, at least). My complaint is that there should be a recall issued because this is a well known problem.

See all problems of the 2006 Mercury Mariner 🔎.

61 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 07/20/2013

The contact owns a 2010 Mercury Mariner. The contact stated that while driving approximately 40 mph, there was a loss of engine power. The vehicle was maneuvered to the side of the road and the engine was turned off. Upon restarting, the vehicle resumed normally until the failure recurred twice. The vehicle was taken to an authorized dealer, who informed the contact that the throttle body assembly would need to be replaced however, the part was on back order and the vehicle would be repaired when the part became available. The manufacturer had not been notified. The approximate failure mileage was 110,000.

62 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 07/19/2013

Was driving on freeway at about 70-75 mph and hesitation occurred and speed uncontrollably decreased. I went to right lane (had been in middle lane) and stopped on the shoulder of the nearest exit lane. Luckily it was very close. I was afraid that I would lose control of steering also. This is 3rd time this happened, so took to dealership and they replaced throttle body assm. For close to $500. Technician said I should be happy now, the new part had been re-designed. I'd be alot happier if Ford had taken responsibility earlier when they realized it needed to be redesigned. The previous occurrence I was in left lane at very busy time on xpressway and had to pull onto the left hand shoulder. . . . Very close to being hit.

63 Engine And Engine Cooling problem of the 2010 Mercury Mariner

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.

64 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 07/18/2013

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

65 Engine And Engine Cooling problem of the 2010 Mercury Mariner

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.

66 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 06/21/2013

I was driving at about 25 mph when the car suddenly lurched forward, then began rapidly decelerating. I had to get off the road and coast to a stop. I turned the car off then restarted it and everything seemed fine, but the problem happened again later that day and several more times in the coming weeks. It has happened at various speeds and under diverse conditions. It is intermittent and unpredictable. After nearly causing an accident on the interstate due to this occurrence I am now limited to surface streets and only when I have no other option but to drive my car. After doing some reading it seems that this is a known defect with the throttle body and I worry that even if I pay out of pocket to have it repaired I will only be buying another part with the same defect. My hope is that Ford will issue a recall of the vehicles for which this is a known issue!.

67 Engine And Engine Cooling problem of the 2011 Mercury Mariner

Failure Date: 06/06/2013

On June 6th, is as going approximately 35 miles per hour when the car went into idle mode. I pulled to the side of the road and the car restarted after cranking it several times. The problem continued but only when traveling at lower speeds. I made point of traveling the back roads when possible. On the 13th of August, I was on the freeway when it happened. I was only able to travel a few 100 feet and it continued this way till I got home going the back roads again. The car has sat there ever since. My husband has been out of town for three months and returned that night. He had the codes checked and they read p2111 and p2112. He did research the problem and came up with many complaints of defective throttle body.

68 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 05/29/2013

A year ago in July of 2012 not sure the approximate date, I was on my way to work and all of a sudden everything just cut off. I'm in the middle of the road, accelerator to the floor and nothing. I took the car to the dealership same day and they had it all day long and couldn't figure out what caused the short and sent me on my way. Now present day which is a bout a year later I take my car in for a simple safety inspection, wait 10 minutes for the porter to bring me my car to find out its idling and the accelerator is to the floor and its not moving. The gentlemen comes in and tells me its my throttle body going out on the car, he told me this has happened to several people and the part is on back order. He said a guy has had his car sitting there for 10 days and the part has yet to come in. They tell me this needs to be replaced, but ironically enough my warranty expired 4 days ago may 25,2013, which I wasn't aware of. I was at the dealer 2 months prior getting a oil change this didn't dawn on you to tell me it was going to expire. So I came to you with this problem a year ago you had no clue and said have a great day, I've been in every 3 months or so for oil changes since that incident, and you couldn't have noticed this problem before my warranty expired awfully convenient. I'm amazed with all the complaints and problems I've seen about this same issue and no recall has been made. This is dangerous. What it tells me is that Ford doesn't care about their consumers enough to take this matter seriously and correct this error.

69 Engine And Engine Cooling problem of the 2010 Mercury Mariner

Failure Date: 05/25/2013

The contact owns a 2010 Mercury Mariner. The contact stated that while driving approximately 45 mph, there was a sudden loss of power as the wrench warning icon illuminated. The vehicle was towed to a dealer where it was diagnosed that the electronic throttle body needed to be replaced. The manufacturer was notified of the failure. The vehicle was repaired. The approximate failure mileage was 58,849 and the current mileage was 59,000.

70 Engine And Engine Cooling problem of the 2009 Mercury Mariner

Failure Date: 05/19/2013

This is the fourth time since purchasing the car at carmax in October 2012 that the car has "shut off" without warning at low speed when close to parking or driving slow--without rhyme nor reason--I had it diagnosed at carmax to no avail, then cherokee Ford to no avail (where I purchased a new battery), then at christian brothers auto where they replaced the spark plugs and coil. ( I have an extended warranty so my cost was 200dollars) the problem continues. I have done research and see the throttle body is most likely the culprit and a safety alert is on the web from consumer report and Ford forum and north carolina safety board---I am having the trottle body replaced at my expense--my daughter drives this vehicle and I want it safe! apparently this involves this model 2009-2012.



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