2008 Mercury Mariner Problems

RepairPal has identified the most common problems with the 2008 Mercury Mariner as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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Known Problems

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.

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.

A defective power steering return line can cause a knocking noise when turning or going over bumps, especially when the engine has reached normal operating temperature. The power steering return line should be replaced.

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