One problem related to high/low beam switch has been reported for the 2002 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Mercury Grand Marquis based on all problems reported for the 2002 Grand Marquis.
The contact stated the headlights intermittently stopped working while driving at night. This happened without any prior warning. When this occurred he could hold the high/low beam dimmer switch upright, and the high beam lights will stay on. The vehicle has not been seen by a dealer. Updated 12/27/05.
| Exterior Lighting problems | |
| Tail Light Switch problems | |
| High/low Beam Switch problems | |
| Hazard Flashing Warning Light Unit problems | |
| Turn Signal problems |