I was driving my 1994 mercury grand marquis gs home from work one night around 12:00 am and I experienced total lighting failure. All of the sudden everything was pitch black no lights what so ever. Every light on the car would go out and come back on simultaneously,causing me swerve, almost crashing head on with oncoming traffic. I have read online of other grand marquis' and ford crown victoria's doing the same thing.this was only my first experience with the lights. I have owned the car since jan 23,2013 and the lights continue to do this therefore I cannot drive it at night. The car is all original no aftermarket nothing but a cd player. Lights were doing this before I installed the cd player. So after this experience I pulled the light switch off only to find that the factory wiring harness that plugs into the back of the light switch had melted where the positive battery wire slot is.so I replaced the harness with a brand new one,and nothing.lights still go out. A couple weeks later I took the light switch off again to find the new wiring harness I had just bought 2 weeks prior melted just like the one from the factory, same wire slot. So now I have to go out and buy another one. I have also replaced the battery and the auto lighting control module too that didnt fix anything either.im going to try a new headlight switch and a nother new harness too. Hopefully that will fix it.but until I get the money to fix one of ford/mercury's most electrical problems I wont be driving it at night. But really this car should be recalled and ford should have to fix this. Grand marquis and crown vics have had problems with their light systems failing all the way up until they quit making them in 2011. Wish I would have known this on 1/23/2013 I wouldn't have bought mine, they just are not safe.
1994 Mercury Grand Marquis electrical problems
10 complaints (6% of all complaints for this car).
- owner complaints
- 10
- of this car's complaints
- 6%
- crashes
- 0
- recalls
- 0
Which part fails
- Wiring: front underhood2
- Wiring2
- Horn2
- Wiring: interior/under dash1
- Wiring: fuses and circuit breakers1
At what mileage
Complaints by mileage at the time of the problem.
Mercury Grand Marquis electrical problems in other years
Specific symptoms reported on the 1994 Mercury Grand Marquis electrical
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
What 1994 Mercury Grand Marquis owners say
Most recent owner complaints, unedited.
Dt: the contact owns a 1994 mercury grand marquis. The contact stated that in may 2005 the vehicle caught on fire. The fire started in the electrical system in the steering column under the hood. There was nothing unusual about the way the vehicle was operating before this happened. The vehicle had been parked about twenty minutes when it caught on fire. The fire melted all the plastic under the hood because they could not get the hood to open to put the fire out. *ak
1994 mercury grand marquis: during a drive at night, the headlights began to filicker at first (along with interior panel lights); this was only intermittent, and could be solved with precise placement of the pull switch. Within 10 days, the filckering was uncontrollable and no longer intermittant. I opened up the dash-board to potentially remove the switch for replacement. Once I had access, I turned on the lights and began to maneuver the wiring to 4658078 attempt to duplicate the problem and stop the problem in order to check for a loose connection. As I was reachig around the wiring, I felt a very hot wire; upon inspection, I discovered that the wire in question was burned up to 1/4 " past the connector (exposing all of the wire fibers) and the connector itself at that point was charred, warped, and blistered. I haven't repaired it at this time.
Car parked in garage. Not driven for 24 hours. Fire started under hood of car. Fire spread throughout attic and house. House damaged $150,000. House in flood plain (grandfathered). House had to be demolished and could not rebuild on site as it stood. Forced to find new home, replace possessions and automobile.
A vehicle fire started at night while parked with the key out of the ignition. The vehicle had not been driven for 8 hours. The vehicle was parked in the garage. The anti lock brake light was on. *ak
There was a fire that started from driver's side engine compartment. Contacted dealer, and the dealer was not willing to do anything.
Was driving 55mph at night when the light switch went out. Had no interior or outside lighting. Took vehicle to dealership in morning. Was informed by mechanic the light switch burned out. The fuse was still good & did not blow out. The wire harness had melted the plastic connector.
Was using high beams, all electrical system would flicker & then go out. Took to dealer & had it repaired. Problem later returned.
Horn button design flaw, buttons too small to find when necessary, consumer was unable to find during emergencies.
Difficulty accessing horn buttons.
Questions about the 1994 Mercury Grand Marquis electrical
Does the 1994 Mercury Grand Marquis have electrical problems?
Owners have filed 10 complaints about the electrical of the 1994 Mercury Grand Marquis, 6% of all its complaints.
At what mileage do 1994 Mercury Grand Marquis electrical problems start?
Not enough complaints include the mileage to tell.
Was there a recall on the 1994 Mercury Grand Marquis electrical?
There is no recall for this problem on this model year.
What year does the Mercury Grand Marquis have the most electrical problems?
The Mercury Grand Marquis model years with the most electrical complaints are 2005 (75 complaints), 2003 (51 complaints) and 1992 (41 complaints).
Other 1994 Mercury Grand Marquis problems
Acceleration 33Brakes 19Transmission 18Engine 16Lights 13Visibility 13Seats 12Airbags 11Steering 10Fuel system 6Tires 5Suspension 2Body 1Seat belts 1Wheels 1
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