The transmission oil cooler may develop a leak, which will require replacement to repair.
Resources for the Repair and Maintenance of your 2009 Mercury Mariner
2009 Mercury Mariner
2009 Mercury Mariner Problems
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 check engine light may come on due to failure of the Variable Camshaft Timing (VCT) solenoids. The VCT solenoids will need to be replaced if they are the reason the check engine light came on.
2009 Mercury Mariner Questions and Answers
I got a message " Oil change required". After changing oil, this message still persists despite resetting. What can be done
My 2009 started to leak on driver side 5,000 miles ago but did not realize it was from my car. I finally suspected it was me and took to the dealership. They said I could not drive due to safety ...
I want to reset the oil change indicator
Ive tried to find the right bolt and have no luck please help. Thank you
SIDE CURTAIN AIRBAGS DEPLOYED.VEHICLE WAS NOT INVOLVED IN AN ACCIDENT OR ANYTHING.