Problems · by component

2003 Mercury Grand Marquis exterior lighting problems

215 owner complaints to NHTSA about the 2003 Mercury Grand Marquis cite exterior lighting, 54% of all 395 complaints for this model year. NHTSA also lists 1 recall on this component.

Complaints
215
54% of all complaints
Crashes
5
Reported by owners
Fires
0
Reported by owners
Injuries
1
Reported by owners
01 —Owner reports

What owners say about the exterior lighting

Verbatim from NHTSA complaints, newest first
“The contact owns a 2003 Mercury Grand Marquis. The contact that the headlights were intermittently inoperable. Additionally, the contact stated that the instrument panel lights, the brake lights, and the turn signal lights were inoperable. The contact who is a mechanic, had inspected the fuses, the fuse box, and other unknown parts, but found no failures. The dealer was notified of the failure. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 15V861000 (Exterior Lighting); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 160,000.”
Owner complaint to NHTSAFiled May 13, 2025Exterior lighting, Electrical systemODI 11660627
“The Lighting Control Module has failed and my brake lights and dash board lights turn off after couple minutes while driving with the lights on. I took my vehicle in to dealer already once for problem to be fixed a year ago. They did repair but now same problem is occurring again. I went back to dealer Sunrise Ford in Fontana and they said recall work is only warranty for 1 year or 12k miles. The work was done in December 2023. They want to charge me $230.00 for diagnostic. But issue is same problem as before. Recall number is 15S39. Driving without brake lights is dangerous and has limited my driving. I cannot go out at night. I do not have another vehicle. This affects my life. I've called other dealers and they refuse to do the work.”
Owner complaint to NHTSAFiled May 6, 2025Exterior lightingODI 11659286
“The contact owns a 2003 Mercury Grand Marquis The contact stated that both the headlamps and the taillights intermittently failed to operate as needed. There were no warning lights illuminated. The vehicle was taken to the dealer and was diagnosed. The dealer placed a processor on the vehicle and rewired the lights however, the failure persisted. The manufacturer was not made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was 127,000.”
Owner complaint to NHTSAFiled Jan 27, 2025Exterior lightingODI 11638746
“The contact owns a 2003 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, the front headlights shutoff independently while turned on. No warning light was illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The contact who is an independent mechanic determined that the lighting control module (LCM) needed to be replaced. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 15V861000 (Exterior Lighting); however, the VIN was not included. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 285,000.”
Owner complaint to NHTSAFiled Dec 10, 2024Exterior lightingODI 11629900
“The contact owns a 2003 Mercury Grand Marquis. The contact stated while attempting to pull out of the parking lot, the headlights and the taillights became inoperable. The vehicle was not diagnosed or repaired. The VIN was not included in NHTSA Campaign Number: 15V861000 (Exterior Lighting). The manufacturer was notified of the failure. The failure mileage was 100,000.”
Owner complaint to NHTSAFiled Sep 24, 2024Exterior lightingODI 11616251
“Head lights suddenly went out while driving at night causing near accident, happening frequently. Also, the gas tank leaks when I put gas in car, making it smell badly and making it dangerous if someone drops a cigarette near it.”
Owner complaint to NHTSAFiled Sep 3, 2024Exterior lighting, Fuel/propulsion systemODI 11612352

Showing 6 of 215 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page
02 —Related recalls

1 recall on this component

Exterior lighting: headlights

Free remedy

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.

Exterior lightingReported Dec 22, 2015NHTSA 15V861000
Data from NHTSA Recalls API · synced Nov 9, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.