2005 Mercury Grand Marquis exterior lighting problems
293 owner complaints filed with NHTSA name the exterior lighting on the 2005 Mercury Grand Marquis — 60% of all complaints for this model year.
What owners report
“The contact owns a 2005 Mercury Grand Marquis. The contact stated that while driving 60 MPH, the front headlights flickered on and off before turning off. The failure had occurred while the contact was driving at night. Upon inspecting the vehicle, the contact became aware of scorch marks on the…”
filed Sep 16, 2026
“The contact owns a 2005 Mercury Grand Marquis. The vehicle was taken to the local dealer, where it was repaired under NHTSA Campaign Number: 15V861000 (Exterior Lighting). The contact stated that the headlights activated without driver input. The contact removed the circuit wires. The vehicle was…”
filed Jul 1, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Affected vehicles have a lighting control module (LCM) that may fail, resulting in a loss…Campaign 15V861000 · Dec 22, 2015
Related service bulletins
Ford: the lighting control module has extended warranty coverage, on certain vehicles, due to a possible crack on solder joint that connects relay to circuit board. Model 2003-2005 crown victoria, grand marquis. *pe
CSP-14-N-01 · Service Bulletin/Repair Instructions · issued Apr 11, 2014
Exterior Lighting problems in other Grand Marquis years
| Year | Reports | Share |
|---|---|---|
| 2010 Grand Marquis | 2 | 8% |
| 2009 Grand Marquis | 1 | 4% |
| 2008 Grand Marquis | 5 | 6% |
| 2007 Grand Marquis | 5 | 5% |
| 2006 Grand Marquis | 6 | 4% |
| 2004 Grand Marquis | 207 | 59% |
| 2003 Grand Marquis | 207 | 57% |
| 2002 Grand Marquis | 6 | 8% |
| 2001 Grand Marquis | 11 | 7% |
| 2000 Grand Marquis | 21 | 13% |
| 1999 Grand Marquis | 20 | 12% |
| 1998 Grand Marquis | 16 | 11% |
Other reported problem areas on the 2005 Mercury Grand Marquis
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.