Table 1 shows nine common electrical system related problems of the 2003 Mercury Grand Marquis. The number one most common problem is related to the electrical system (40 problems). The second most common problem is related to the headlights turn off while driving (five problems).
The headlights shut off without warning Read details...
Tl-the contact owns a 2003 Mercury Grand Marquis. The contact stated that while driving 35 mph, the vehicles low beam headlights failed without warning. The contact was able to use the high beam lights to be able to see. The vehicle was not taken to a dealer. Read details...
The contact owns a 2003 Mercury Grand Marquis. The contact was driving approximately 30 mph when the vehicle stalled without warning. There was a strong burning odor inside of the vehicle. The contact inspected underneath the hood and flames excessively ignited from the engine compartment. Read details...