Problems for specific Mercury Grand Marquis years:

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2005 Mercury Grand Marquis Problems

 

Airbag Light Due to Failed Spring in Seat Belt Buckle

Verified for the Mercury Grand Marquis

A spring in the seat belt buckle may wear or fail, causing the airbag light on the instrument panel to illuminate. Failed buckles will require replacement.

13 Reports
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Malfunctioning Headlights

Reported by bearmug and 4 others for the Mercury Grand Marquis

The car had 64600 miles on it and the headlights started going out while driving, which can be very dangerous. The problem is in the Light Control Module which is an expensive part (around $500 to $600 + labor).

5 Reports
Me Too

Check Engine Light Due to Failed Oxygen Sensor

Verified for the Mercury Grand Marquis

One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.

1 Report
Me Too
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