NHTSA — Vehicle Speed Control Problems

2008 Mercury Mariner (Page 1 of 2)

CarComplaints.com Seal Of This Might Hurt

CarComplaints.com Notes: The 2008-2011 Mercury Mariner has a dangerous problem with the power steering that Ford says they fixed when they didn't -- at least not 100%.

2.1

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
77,062 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 Mercury Mariner engine problems

engine problem

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2008 Mercury Mariner Owner Comments (Page 1 of 2)

problem #29

Feb 062021

Mariner

  • miles

A D V E R T I S E M E N T S

2008 Mercury Mariner throttle control powertrain light comes on, transmission cannot go into gear properly, it stops at 4000 RPM, and it struggles to go at higher speeds,

- South Weymouth, MA, USA

problem #28

Jun 212020

Mariner

  • 198,000 miles
I realized sometime last year that my throttle was sticking when I would start the car and begin to take off. It was here and there and then I must have gotten use to it but now it does it even when I'm driving, it sticks all the time. Now it doesn't want to shift at the right times and it acts weird a lot, going up hills, when shifting from gears and so on.

- Bridgeport, IL, USA

problem #27

May 192019

Mariner

  • 165,000 miles
Takata recall well driving my vehicle lost acceleration.when I step on the gas the vehicle didn't accelerate as the RPM went up.I was coming to a stop light on city street.as I made the stop at stop-light as the light turn green I stepped on the has and the rpms went up but vehicle barely moved.

- Detroit, MI, USA

problem #26

Jun 122017

Mariner

  • 101,851 miles

A D V E R T I S E M E N T S

The throttle is held open when the cruise control is employed but remains open when the cruise control is turned off both by using the off button and brake application. This happens at 75-80 mph on interstate highways in AZ and ut. The power brake booster is ineffective with no intake vacuum. This is very dangerous.

- Tucson, AZ, USA

problem #25

Feb 012014

Mariner 6-cyl

  • 44,000 miles
The contact owns a 2008 Mercury Mariner. While driving 40 mph, the vehicle hesitated and would not accelerate past 25 mph. In addition, the vehicle accelerated rapidly without warning. The contact stated that the vehicle shut off on numerous occasions and the check engine indicator illuminated briefly without warning. The vehicle was not repaired the manufacturer was made aware of the failures. The failure mileage was 44,000. Updated 08/04/17

- Houma, LA, USA

problem #24

Dec 292016

Mariner 6-cyl

  • 72,300 miles
My wife and I were driving home on the interstate. We had just merged to the passing lane to allow traffic merging from an on ramp to enter the interstate a vehicle next to us was doing the exact speed as we were which was 72 mph set cruise control. I had vehicles approaching from the rear and since I was in the passing lane decided to speed up and get in front of the car beside us I pushed the accelerator on our 08 Mercury Mariner with a 3.0L engine to the floor and the car accelerated in front of the other car, when I lifted my foot off the accelerator the car continued to accelerate. I pushed on the brake once with nothing changing the car continued to accelerate. I proceeded to pump the brake three additional times in about 1 second intervals. Finally the accelerator pedal release and the car slowed down. We preceded home without further incident. This is a very dangerous condition and has resulted in serious injuries and deaths in earlier model years of Ford escape, Mercury Mariner and Mazda tribute vehicles. I have had Ford vehicles my whole life and have been working on vehicles for more than thirty five years. This is not normal and is not the only time or vehicle this has happened to in this year there are many other similar people that have similar complaints on these Ford and Mercury SUV's on the internet ex: Carcomplaints.com to name just one. The internet is filled with these dangerous complaints. When are you going to live up to your name and put the safety aspect first, when dealing with these to rich to be bothered by recalls auto manufacturers?

- Mooreton, ND, USA

problem #23

Oct 132012

Mariner

  • 80,000 miles

A D V E R T I S E M E N T S

The contact owns a 2008 Mercury Mariner. While driving approximately 30 mph, the accelerator pedal assembly fractured without warning. The contact reconnected the arm; however, the failure recurred. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 80,000.

- Louisville, KY, USA

problem #22

Mar 202016

Mariner

  • 77,000 miles
Speed shift forced on 2nd and 4th, the vehicle has only 77000 miles and transmission is bad, contacted the dealer about the problem and no action taken, they said the vehicle is not on a recall campaign and owner needed to do repair and if the campaign started on this problem in the future they will reimburse the repair amount, I need the vehicle on a daily basis and now I'm stock with the repairs cost of 1500 plus labor. I need to add this vehicle to the recall as shown here: Report receipt date: Sep 29, 2015 NHTSA campaign number: 15V606000 component(s): Power train the vehicle was in motion when it happened, speed was reduced and wrench light came on the dashboard

- Union City, NJ, USA

problem #21

Mar 162016

Mariner

  • 96,000 miles
The contact owns a 2008 Mercury Mariner. The contact stated that while driving and depressing the accelerator pedal, the vehicle would hesitate to accelerate over 15 mph and the service warning light illuminated. The vehicle was taken to a dealer where it was diagnosed twice that the throttle control module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 96,000.

- Philadelphia, PA, USA

problem #20

Feb 012016

Mariner

  • 115,000 miles
Same results of the consumer satisfaction program 13N03. A defective throttle body. Car began to stall/choke out while accelerating. It continued to do so until it finally left me on the side of the road. Ford is aware of the problem but because my car was built at a different time/plant does not offer assistance for a known unsafe problem. This started on the freeway and continued after I exited for fear of stalling on the freeway. Car has to be towed/repaired at my expense. A friend has the same model vehicle/same problem last year, but due to her car being built at that plant/time was compensated for the same exact problem. Again, Ford is aware of the problem but minimizes coverage. I can't help but think of what could have happened if my wife/daughter had been driving(at night). In reality, it is unsafe and I could have been killed.

- Houston, TX, USA

problem #19

Jan 072015

Mariner

  • 83,000 miles

A D V E R T I S E M E N T S

The contact owns a 2008 Mercury Mariner. The contact stated that the vehicle lunged forward excessively while attempting to accelerate. The contact engaged her brakes and when releasing the brake pedal the failure recurred. The vehicle was taken to the dealer where the technician was unable to find a failure. No repairs were made to the vehicle. The manufacturer was not made aware of the failure. The failure mileage was 83,000.

- Columbus, OH, USA

problem #18

Jan 092015

Mariner 4-cyl

  • 98,000 miles
In cold weather my gas pedal sticks. Even after I have started my car and let run for 10-15 minutes. When I get in, reverse to forward position and try to accelerate- the gas pedal sticks. I have to slam on it for about 2 minutes before it actually works. This has happened while driving as well, not just the initial start. It definitely happens more in cold weather. What can I do? after research this sounds like it's a common problem with 2008 Mercury Mariners. I believe it's definitely a safety issue.

- Bartlett, IL, USA

problem #17

Oct 092014

Mariner 4WD 6-cyl

  • 146,000 miles
Acts like throttle body failure. No power when accelerating but rpms go up and then surges when finally throttle works. Wrench light on.

- Westminster, CO, USA

problem #16

Mar 292014

Mariner 6-cyl

  • 77,000 miles
I had just made a right turn and was proceeding down the block when I heard a sudden "click" and lost power. I couldn't steer and there was no power. I managed to get the car over to the curb and turn off the engine. I restarted it a few minutes later and it started up ok. However, the rsc warning light stayed on even though I had never pressed that button. This is not the first time this has happened. The first time it happened I was told it was a battery problem so I got a new battery. That was less than a year ago and I can't imagine I need a new battery that often - that simply needing a new battery will cause my car to fail! in doing some research I've come across several instances of the same issue necessitating replacement of the throttle body module with trouble codes P2111 and P2112 and, in fact, the North Carolina consumers council (nccc) has officially petitioned the national highway safety administration (NHTSA) for a defect investigation of alleged throttle body failures in 2005-2012 Ford escape vehicles sharing the same or substantially similar part. Luckily I was only on surface streets and not the freeway. It's only a matter of time before this happens on the freeway! is there going to be a recall?

- Lake Balboa, CA, USA

problem #15

Mar 152013

Mariner 4-cyl

  • 75,000 miles
Without warning the gas pedal sticks, will not function. This happens intermittently and seems to disappear when the car warms up, but also has happened when the car is warm. Very dangerous when trying to accelerate or just drive normally. This seems to be a widespread problem with both the Ford escape and the Mercury Mariner. We have been stranded several times. This needs to be fixed by the manufacturer.

- Easley, SC, USA

problem #14

Feb 172014

Mariner

  • 102,000 miles
While driving my car stalls without warning then it jerks real hard and takes off so I have to ride the brakes after coming to a stop before I can press the gas peddle it takes off so I ride the brakes. While driving again it picks up speed on its own very scare please help.

- Houma , LA, USA

problem #13

Nov 152013

Mariner 4-cyl

  • 52,000 miles
Vehicle does not accelerate from rest. Press gas pedal - vehicle does not go - then all of sudden it takes off. Dangerous scenario at stop lights. Dealer says issue is defective throttle body.

- Coralville, IA, USA

problem #12

Jan 102014

Mariner 4-cyl

  • 91,526 miles
I pulled into a gas station to turn around. When I came to a complete stop and pressed the gas pedal to go, my gas pedal wouldn't budge it was like it was stuck. When I pulled on the highway it done it again but it took longer to get my gas pedal to press down. When I come to stop now I have to keep my foot on the break and the gas pedal to insure that it will go when I press the gas pedal.

- Pulaski, TN, USA

problem #11

Oct 182013

Mariner 4-cyl

  • 92,924 miles
The throttle/gas pedal in my 2008 Mercury Mariner kept sticking and eventually breaking. I had the car towed and taken to a repair shop where they inspected the cable unhooked from the pedal when the technician hooked the cable throttle to the pedal it would not move when pressing down on the pedal, the throttle plate stuck. The technician removed and replace the throttle body assembly. I researched online and found that my issue is the same issue that was a Ford escape recall back in July 2012. Is this something I can contact Ford about to see if this should also be part of their throttle cable recall.

- Bothell, WA, USA

problem #10

Sep 012012

Mariner

  • 82,000 miles
I was driving along the highway and the gas pedal just went to the floor. The engine was still running but I could increase the power. I had to coast across three lanes of high speed traffic in order to get my vehicle safety to the side of the road. This the second time the accelerator cable in this vehicle has snapped without warning. My dealer replaced the first cable last year and just over one year later the same cable has snapped. I was fortunate not to panic and was able to bring my vehicle to the side of the road. This cable snapped twice while I was traveling on the highway. I had no control over my vehicle and could have killed or involved in an accident. My dealer is replacing the cable under my extended warranty but are charging me to replace their defective throttle box. Ford/Mercury needs to recall all Mariners and Ford escapes asap.

- Woburn, MA, USA

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