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7.7

pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
6,125 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2010 Mercury Mountaineer drivetrain problems

drivetrain problem

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2010 Mercury Mountaineer Owner Comments

problem #1

Dec 072011

Mountaineer 6-cyl

  • 6,125 miles

A D V E R T I S E M E N T S

Pulled into parking space, placed shifter in park, turned off ignition, released brake and vehicle rolled backwards as if not in park. Attempted to restart vehicle and no response. Set parking brake. Could not get vehicle to lock into park, shifter moved regardless of brake on or not and would not start. Moved shifter through entire range of gears and returned to park, vehicle still would not start and park would not hold. Called dealer and was told to have it towed in. Returned to vehicle and tried once more and it started and proceeded to respond normally. Vehicle taken directly to dealer who could not find any problem or cause of preceding situation. On two subsequent dates (most recent 5/25/2012), vehicle was backed into a parking space, placed in park and ignition turned off. When an attempt to restart vehicle was made there was no response. Park appeared to hold normal, but unable to engage ignition. Dash lights, chimes and all electrical components appear to work normal but was still unable to engage starter. Again started process to have vehicle towed to dealer. After approximately 30 minutes to an hour of sitting (with no other action) vehicle started normally. Again dealer at a loss for cause and cannot effect repair since unable to recreate problem. Concern is for transmission/ignition interlock failure or other action that could result in damage or injury.

- Elfers, FL, USA

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