Mercury Grand Marquis Exterior Lighting Problems
Owners have filed 853 complaints with NHTSA about exterior lighting problems on the Mercury Grand Marquis across 16 model years. The 2005 model year has the most (293). The words owners use most often: “lighting control module” (16% of reports).
- 853exterior lighting complaints
- —median miles at failure
- 11mention a crash
- 4mention an injury
- 1related recalls
- $960typical repair cost reported by owners
- 48%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 136 of 853 complaints (16%)
- Headlights failed: mentioned in 102 of 853 complaints (12%)
- High beam: mentioned in 93 of 853 complaints (11%)
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 Mercury Grand Marquis at $960, and half of them between $780 and $1,100.
Based on 41 NHTSA complaints about this problem alone that state a repair bill or quote (2004–2023), 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 664 complaints that reported the odometer reading.
How serious are the reports?
Of 853 complaints, 11 mention a crash, 1 a fire, 4 an injury.
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
Model years: 2003, 2004, 2005
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 2004 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, a local Police Officer stopped the vehicle and made the contact aware that both taillights were inoperable. No warning lights were illuminated. The vehicle was taken to a dealer to be…
While driving my vehicle headlights turn off and back on, sometimes off for minutes sometimes flickering.
The contact owns a 2004 Mercury Grand Marquis. The contact received NHTSA Campaign Number: 15V861000 (Exterior Lighting). The contact stated that while driving at night, the headlights were flickering and became inoperable. Occasionally, the headlights operated as designed. There were no warning…
Auto lights stopped working. Tail lights will not come on
Frequently asked questions
Do all Mercury Grand Marquiss have exterior lighting problems?
No. NHTSA has 853 owner complaints about exterior lighting for the Mercury Grand Marquis. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 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.
How much does it cost to fix exterior lighting problems on the Mercury Grand Marquis?
Owners report a typical cost of $960 (half paid between $780 and $1,100), from 41 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about exterior lighting problems on the Mercury Grand Marquis?
The most frequent phrase is “lighting control module”, in 136 of 853 complaints, followed by “headlights failed” (102).
Other Mercury Grand Marquis problems
See all Mercury Grand Marquis problems.