Mercury Grand Marquis owners have reported 301 electrical system related problems since 1996. Table 1 shows the 25 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (179 problems). The second most common problem is related to the vehicle's headlights turn off while driving (24 problems). For details of each of the problem category, use the links in the table.
Auto lights stopped working. Tail lights will not come on Read details...
The contact owns a 2002 Mercury Grand Marquis. The contact stated that the hazard lights, daytime running lamps, low beam, and high beam headlights failed to illuminate. The failure progressed without warning. Read details...
The position of the horn for 1997 Mercury Grand Marquis is problematic. The horn is just in front of the left front wheel and prone to get water sprayed by wheel in raining season. This will cause the rust and failure of the horn. Read details...
The interior lights come on when there is no one in the vehicle and no key is in the ignition. No other lights come on. Read details...
Low/high beam lights inoperative in park or drive, bulbs & wiring checks good, 25 amp fuse was blown, but replaced fuse caused no change. Read details...