Exterior Lighting Related Problems of the 2003 Mercury Grand Marquis

Table 1 shows six common exterior lighting related problems of the 2003 Mercury Grand Marquis. The number one most common problem is related to the headlights (94 problems). The second most common problem is related to the exterior lighting (79 problems).

Table 1. Exterior Lighting related problems of Mercury Grand Marquis


Recently reported Exterior Lighting problems of the 2003 Mercury Grand Marquis

The Headlights problem

The contact owns a 2003 Mercury Grand Marquis. The contact stated that while the vehicle was parked, the contact noticed that the headlights were inoperable. There was no warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the lighting control   Read details...

The Exterior Lighting problem

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.   Read details...

The Headlight Switch problem

While driving the vehicle the headlights would go out and stop working. The only way I could drive at night was to pull the switch towards me and keep the brights on while driving. If I let go the lights wouldn't stay on and I couldn't see the road.   Read details...


Exterior Lighting related problems in other Mercury Grand Marquis model year vehicles:



Fuel Economy of Grand Marquis Vehicles
Grand Marquis Service Bulletins
Grand Marquis Safety Recalls
Grand Marquis Defect Investigations