2010 Mercury Mariner Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2010 Mercury Mariner

If the transmission oil leaks out of left side half shaft area, it may be from a worn axle shaft seal. The seal can be damaged by a poor surface finish on the axle shaft. The axle shaft and seal should be replaced to correct the problem.

Looseness in the steering shaft and steering shaft coupling U-joint can cause a knocking / popping noise from the steering column when turning. The steering shaft and coupling U-joint will need to be replaced.

The transmission oil cooler may develop a leak, which will require replacement to repair.

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When I purchased the vechicle, I was told the everything was 100% in good working condition. The vechicle only had 32,000 miles on it. 2 days after I purchased the Mariner, I tried the front defrost switch and there was no heat whatsoever. I called the dealer and they said that they didn't know if the heater problem was covered in the warranty. I checked the heater hoses at the fire wall and b...

8 months in and so far so good. easy ride. cargo space is a bit smaller than expected. wierd fold down seating.

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