2005 Mercury Mariner Engine cooling Problems
- Complaints
- 8about this part
- Share
- 12%of 67 total for the year
- Median mileage
- 37,200miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the engine cooling of the 2005 Mercury Mariner, 12% of the 67 complaints for this model year. Where a mileage was given, the median is 37,200 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.
“2-18-09: 2005 Mercury Mariner--locked engine: message: check emission system. Taken to shop. Took 10 days to repair, drove vehicle 3 days and same thing happened. 3-5-09: vehicle again locked up and taken to shop by wrecker for repair. 2 weeks later car still not fixed. Told by ford in detroit: backlog/parts supplier out of business. Will not loan a me a vehicle, can do nothing to help me. Wait 3 months for part.”
NHTSA complaint #10262784, filed 2009-03, 37,700 miles“I purchased a 2005 Mercury Mariner 7/24/2006at anaheim lincoln Mercury and they were shut down. I have gone to many fords & they will not help me cause the they don't have start date of warranty. I only have 17,0000 miles on this car and my air bag light goes on & off. Also my tires have serious problem I had to buy 2 myself the first 2000 miles the tire r wearing so bad now once again.”
NHTSA complaint #10184024, filed 2007-03, 2,000 miles“The car stalled on me twice today. The first time it happened, I was traveling on gibson at 45 MPH and made a left turn suddenly car stalled while in gear. I was able to coast to the shoulder, however I could not restart the car. I checked the manual and came across the fuel safety cut off switch located on the front passenger side panel. I pushed the reset button and was able start the car. Second time, I was approaching a traffic light the car stalled on me again. I pushed the reset button again, and started the car. …”
NHTSA complaint #10711837, filed 2015-04, 36,700 miles“Car began to make a pop like noise, it has been taken to dealer 3 times and the catalytic converter was replaced the 2nd time in. On the 3rd time they said they could do nothing about the noise as I start the car when cold. Who is liable when my warranty is over?”
NHTSA complaint #10215118, filed 2008-01, 10,025 miles“2005 Mercury Mariner. Sudden stalling of engine at speeds up to 40mph and loss of power (then recovers) at higher speeds. Notified ford and scheduled for service twice - dealer unable to replicate and ford response is that every consideration has been given to the matter....unable to further review concern we have yet another service call scheduled with another dealer because problem persists and could lead to serious accident in traffic. Problem manifested itself in july 2008 and no regular consistent pattern to it but happening more often and stalls happening more often. …”
NHTSA complaint #10252344, filed 2008-12, 25,000 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…
- 10036913Sep 14, 2010Ford/mercury: mil on with dtc p0351-p0356; multiple coil primary circuit. Built on or before 10/03/05. Some vehicles equipped with a 3.0l engine may exhibit a mulfunction…
- 10021601Jun 11, 2007Engine stalling on engagement/stopping.
- 10021057Feb 27, 2007Spark knock, hard start and/or hesitation - vehicles built after 08-02-2004 with a 3.0l engine.
- 10021051Feb 27, 2007Possible engine damage - install special service tools prior to removing crankshaft pulley bolt.
- 10020173Jan 1, 2006Possible engine damage - install special service tools prior to removing crankshaft pulley bolt - service tip.
- 10019382Jan 1, 2006Camshaft tick noise - 3.0l 4v engine only.
- 10018745Nov 14, 2005Wds cop kit diagnostic tip - coil on plug (cop) ignition systems - engine misfire or rough running.
Engine cooling: other model years
Other parts of the 2005 Mercury Mariner
15 complaintsElectrical system
10 complaintsVehicle speed control
9 complaintsAir bags
8 complaintsEngine
8 complaintsFuel system
7 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsTires
5 complaintsOther or unknown
4 complaintsBrakes
3 complaintsBody and structure
3 complaintsSuspension
3 complaints
← All problems reported for the 2005 Mercury Mariner
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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