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
- won't start1
- NHTSA: Electrical System34
- NHTSA: Electrical System: Alternator/Generator/Regulator1
- NHTSA: Electrical System: Battery1
- NHTSA: Electrical System: Ignition1
- NHTSA: Electrical System: Wiring1
- NHTSA: Electrical System: Wiring: Interior/Under Dash1
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Check out our Mercury Grand Marquis overview to see the most problematic years, worst problems and most recently reported complaints with the Grand Marquis.