2005 Mercury Grand Marquis Exterior Lighting Problems
Owners have filed 293 complaints with NHTSA about exterior lighting problems on the 2005 Mercury Grand Marquis, 60% of all complaints for this model year. Half of the reports with a mileage happened before 79,000 miles. The words owners use most often: “lighting control module” (18% of reports).
- 293exterior lighting complaints
- 79,000median miles at failure
- 2mention a crash
- 0mention an injury
- 1related recalls
- $930typical repair cost reported by owners
- 47%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Lighting control module: mentioned in 52 of 293 complaints (18%)
- Headlights failed: mentioned in 48 of 293 complaints (16%)
- High beams: mentioned in 44 of 293 complaints (15%)
- Turn signal: mentioned in 17 of 293 complaints (6%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical exterior lighting repair on the 2005 Mercury Grand Marquis at $930, and half of them between $720 and $1,150.
Based on 13 NHTSA complaints about this problem alone that state a repair bill or quote (2009–2019), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do exterior lighting problems happen?
Based on 249 complaints that reported the odometer reading.
How serious are the reports?
Of 293 complaints, 2 mention a crash.
Mercury Grand Marquis exterior lighting complaints by model year
| Model year | Exterior Lighting complaints | Share of that year | Median miles |
|---|---|---|---|
| 2010 Grand Marquis | 2 | 8% | 56,100 |
| 2009 Grand Marquis | 1 | 4% | 17,445 |
| 2008 Grand Marquis | 5 | 6% | 76,000 |
| 2007 Grand Marquis | 5 | 5% | 111,350 |
| 2006 Grand Marquis | 6 | 4% | 89,200 |
| 2005 Grand Marquis | 293 | 60% | 79,000 |
| 2004 Grand Marquis | 207 | 59% | 85,500 |
| 2003 Grand Marquis | 207 | 57% | 95,100 |
| 2002 Grand Marquis | 6 | 8% | 45,417 |
| 2001 Grand Marquis | 11 | 7% | 96,321 |
| 2000 Grand Marquis | 21 | 13% | 122,000 |
| 1999 Grand Marquis | 20 | 12% | 137,000 |
| 1998 Grand Marquis | 16 | 11% | 114,500 |
| 1997 Grand Marquis | 19 | 6% | 71,233 |
| 1996 Grand Marquis | 18 | 8% | 130,000 |
| 1995 Grand Marquis | 16 | 9% | 100,000 |
When owners reported it
Related recalls (1)
Exterior lighting:headlights
Problem: Ford Motor Company (Ford) is recalling certain model year 2003-2005 Ford Crown Victoria and Mercury Grand Marquis vehicles manufactured October 3, 2001, to August 2, 2005. The affected vehicles have a lighting control module (LCM) that may fail, resulting in a loss of headlights.
Risk: A loss of headlights can reduce driver visibility and increase the risk of a crash.
Fix: Ford will notify owners, and dealers will replace the LCM, free of charge. The recall began April 14, 2017. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15S39.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
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…
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…
The contact owns a 2005 Mercury Grand Marquis. The contact stated that while driving at various speeds and at night, the headlights independently turned off. The contact had taken the vehicle to an independent mechanic where it was diagnosed and determined that the lighting control module needed to…
Frequently asked questions
Do all 2005 Mercury Grand Marquiss have exterior lighting problems?
No. NHTSA has 293 owner complaints about exterior lighting for the 2005 Mercury Grand Marquis (60% of the 488 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2005 Mercury Grand Marquis exterior lighting?
Yes: 1 safety recall list exterior lighting. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
At what mileage do exterior lighting problems start?
The median reported mileage is 79,000 miles: half of the reports with a mileage came before that.
How much does it cost to fix exterior lighting problems on the 2005 Mercury Grand Marquis?
Owners report a typical cost of $930 (half paid between $720 and $1,150), from 13 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about exterior lighting problems on the 2005 Mercury Grand Marquis?
The most frequent phrase is “lighting control module”, in 52 of 293 complaints, followed by “headlights failed” (48).
Other 2005 Mercury Grand Marquis problems
See all 2005 Mercury Grand Marquis problems or exterior lighting problems across all Grand Marquis years.