2007 Mercury Mountaineer Engine cooling Problems
- Complaints
- 4about this part
- Share
- 5%of 81 total for the year
- Median mileage
- 62,750miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine cooling of the 2007 Mercury Mountaineer, 5% of the 81 complaints for this model year. Where a mileage was given, the median is 62,750 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have a 2007 Mercury Mountaineer with 42,000 miles on it and was notified by my dealership that there is a leak in the radiator and it needs to be replaced. My dealership told me this was common problem with mountaineers but ford will not stand behind the equipment.”
NHTSA complaint #10376541, filed 2011-01, 42,500 miles“I am the owner of a 2007 Mercury Mountaineer. It has about 64,000 miles on it, most of them highway miles. I have a leak in my radiator. The dealer says it is a defect in the radiator, and no corrosion is present. It is out of warranty, so I must bear the cost of replacement of the radiator. Cost ~$700. I do not drive off road, so there is no valid reason the radiator should have failed. During an internet search, I discovered this is a common problem with 2006 and 2007 Mercury mountaineers and ford explorers. …”
NHTSA complaint #10379422, filed 2011-01, 64,500 miles“My transmission jerks as I accelerate during travel. To me it's getting worse. I have had it looked at. No codes are showing that I have a problem. But clearly something is wrong. I have done this several times, still no codes to indicate anything is wrong with my vehicle. Also my gas sensors are shot. Engine light goes in and out. My vehicle has stopped in the middle of atlanta traffic, causing problems of other vehicles traveling in the direction that I am with children. I also have the problem with backing my vehicle, it jerks before backing.”
NHTSA complaint #10454453, filed 2012-04, 67,000 miles“The contact owns a 2007 Mercury Mountaineer. The dealer informed the contact the radiator needed to replaced. The vehicle was taken to the dealer who will repair the failure at the contacts expense. The dealer informed her there was no recalls or warranty on the vehicle. The manufacturer was contacted and offered no assistance. The failure mileage was 61,000. Updated 06/03/11 the consumer stated one month later, the power steering pump had to be replaced. Updated 07/08/11”
NHTSA complaint #10398150, filed 2011-04, 61,000 milesRelated service bulletins
- 10109070Sep 21, 2016The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to…
- 10029205Jun 1, 2009Ford/mercury/lincoln: vehicles may exhibit one or more of the following symptoms: drive away hesitation, loss of rpm on deceleration, difficulty starting, and/or idle rpm less…
- 10021040Feb 26, 2007Calibration update 4.0l - various symptoms - surge, hesitation, torque converter cycling, no up shift after forced downshift, and poor a/c performance.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2008 | 3 | 3% |
| 2007 | 4 | 5% |
| 2006 | 43 | 37% |
| 2005 | 5 | 6% |
| 2004 | 11 | 5% |
| 2003 | 10 | 7% |
| 2002 | 33 | 9% |
| 2001 | 1 | 5% |
| 2000 | 5 | 4% |
| 1999 | 12 | 8% |
| 1998 | 20 | 8% |
| 1997 | 14 | 4% |
Other parts of the 2007 Mercury Mountaineer
26 complaintsTransmission and drivetrain
25 complaintsElectrical system
16 complaintsVehicle speed control
7 complaintsOther or unknown
6 complaintsEngine
5 complaintsSteering
5 complaintsBody and structure
5 complaintsSeat belts
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsWheels
3 complaintsExterior lighting
2 complaints
← All problems reported for the 2007 Mercury Mountaineer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology