2011 Mercury Mariner engine NHTSA complaints: Engine And Engine Cooling

NHTSA — Engine And Engine Cooling Problems


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
28,841 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.

2011 Mercury Mariner engine problems

engine problem

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2011 Mercury Mariner Owner Comments

problem #3

May 052014

Mariner 6-cyl

  • 32,200 miles


I was driving through my neighborhood on the way home from going out to dinner. I went around a curve and then when I started going up a slight hill, the engine surged. I didn't think to much about it until I lost almost all power. I could not get up to a speed higher than 5 miles per hour. I was able to get within one block of my residence. I waited for about an hour as I looked up the diagnostic code that my odb2 scanner gave me. I found out that it is code P2111, throttle actuator control system - stuck open. I went back to my car, after about an hour, and it started just fine. I was able to drive my SUV to my local Ford dealer, with someone in another car following to make sure that I didn't have a repeating issue. I did a night key drop tonight, the same day as when the issue happened. I included the warranty letter that I had received from Ford regarding the throttle body replacement. I cannot understand why Ford would not issue an official recall to fix this ongoing problem. I feel very fortunate that I was not on a busy interstate highway or otherwise congested road when this happened. Will there have to be numerous reports of fatalities or serious property damage before this issue is actually rectified?

- Laurel, MD, USA

problem #2

Jun 252013

Mariner 6-cyl

  • 54,322 miles
Driving highway speed and vehicle stalled, also stalled after taking off from stopped position. Pulled off of the side of the road and turned engine off and was able to restart the engine.

- Houston, TX, USA

problem #1

May 232013


  • miles
I just bought a 2011 Mercury Mariner in April 2013..I only had it 6 weeks when this happened. I was driving in 5 O'clock traffic and my car motor started making funny noises, felt like it was trying to stall and would not accelerate, the wrench light came on and then my check engine light. My car would barely drive, I was stuck in traffic, thankfully people saw my hazard lights and allowed me to cut through the lines of traffic and I was finally able to pull over into a parking lot. I found out later my car had gone into "limp mode" & this is a "known issue" with Ford escapes & Mercury Mariners model years 2009-2011. It is due to a faulty throttle body. My car has been in the shop for 2 weeks now & my mechanic has been unable to get a new part because they are on a national backorder. Over 4,000 parts are on order and have been on backorder since February of this year (2013). Why has there not been a recall"?? clearly, this is a widespread issue!!! neither the dealership or my mechanic can get a part to fix my car. I am stuck without a vehicle or any recourse to get myself into a working vehicle. Insurance will not pay for a rental indefinitely since we do not know when these replacement throttle body parts will actually ship - we've already been waiting for 2 weeks. The company keeps telling my mechanic they will ship in 3-4 days and we are still without a part. I can't help but wonder, what about the other people besides myself that have also been waiting on this shipment even longer than I have"! this is ridiculous.

- Tyler, TX, USA

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