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2003 Mercury Grand Marquis
Worst 2003 Grand Marquis electrical Problems
Click on a problem below to read more.
- faulty lighting control module1
- something keeps draining the battery1
- NHTSA: Electrical System5
- NHTSA: Electrical System: Battery1
- NHTSA: Electrical System: Ignition1
- NHTSA: Electrical System: Wiring1
- NHTSA: Electrical System: Wiring: Interior/Under Dash1
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Compare Mercury Grand Marquis Model Years
Curious how the 2003 Grand Marquis compares to other years?
Check out our Mercury Grand Marquis overview to see the most problematic years, worst problems and most recently reported complaints with the Grand Marquis.