2007 Mercury Mariner Engine cooling Problems
- Complaints
- 2about this part
- Share
- 6%of 33 total for the year
- Median mileage
- 50,868miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2007 Mercury Mariner, 6% of the 33 complaints for this model year. Where a mileage was given, the median is 50,868 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 purchased the vehicle with 6,000 miles on it. I kept up my normal maintance on the vehicle and replaced things when needed. At approximately 42,000 my transmission would no longer shift the gears. The vehicle was brought to wallace dealership of which they kept my vehicle for almost 2 weeks. They explained they did an overhaul of the transmission and fixed repairs on it so that their would be no further problems with transmission later on down the road. Now at 84,735 miles later, I am once again having transmission problems and my vehicle will not go into gear. …”
NHTSA complaint #10443529, filed 2012-01, 84,735 miles“I have a 2007 Mercury Mariner I purchased in april 2007. The vehicle has been in the shop 4 times now. 3 of the 4 times because something has gone out on the vehicle I.e. The gas pedal, the wheel bearings, the tension pulley. I also found out from the dealership that that manufacturer never put the bolts on the top of my engine to cover the spark plugs. I continue to have a problem. These last three incidents have been within the last month and a half my vehicle has been in the shop getting new parts. I have always bought used. …”
NHTSA complaint #10217991, filed 2008-02, 17,000 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…
- 10039244Oct 1, 2010Ford: there is excessive engine or exhaust noise, or an exhaust odor due to an exhaust leak. There will be no warning codes or lights. 2007-2008 escape/mariner.
- 10021601Jun 11, 2007Engine stalling on engagement/stopping.
- 10021051Feb 27, 2007Possible engine damage - install special service tools prior to removing crankshaft pulley bolt.
Engine cooling: other model years
Other parts of the 2007 Mercury Mariner
11 complaintsElectrical system
7 complaintsEngine
7 complaintsVehicle speed control
4 complaintsAir bags
2 complaintsSuspension
2 complaintsBrakes
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsSteering
1 complaintsTires
1 complaints
← All problems reported for the 2007 Mercury Mariner
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