1994 Mercury Grand Marquis: headlights failing or too dim

Filed Jan 23, 2017 · Lights · 98,000 miles · WI

Tl* the contact owns a 1994 mercury grand marquis. The contact stated that while driving at unknown speed, the headlights failed to remain illuminated. The vehicle was not taken to a dealer. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 98,000.

Filed Jun 13, 2016 · Lights · 100,000 miles · MO

Tl* the contact owns a 1994 mercury grand marquis. The contact stated that while driving at night with the low beam headlights activated, the headlights suddenly shut off. The driver was able to turn the headlights back on but the failure reoccurred. The cause of the failure was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 100,000.

Filed Dec 28, 2015 · Lights · OK

Tl* the contact owns a 1994 mercury grand marquis. While driving various speeds at night, all the exterior lighting seized without warning. The vehicle was taken to an independent mechanic where it was diagnosed that the headlight switch assembly failed and needed to be repaired. The vehicle was repaired, but the failure recurred. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed May 5, 2013 · Electrical, Lights · 92,727 miles · AL

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.

Filed Jan 31, 2005 · Electrical · 117,000 miles · NC · fire

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.

Filed Jan 23, 2004 · Lights · 44,845 miles · MI

Headlights switch failure. *ak the headlight switch was always used manually, the wiring harness of the headlight switch locked and melted apart. *sc

Filed Apr 11, 2002 · Lights · CA

This complaint is not about my car, it is about the new headlights on oncoming vehicles. Last night, driving on i680, I was blinded by a vehicle coming up behind me and this was only the first of three occurances by three different cars. Something must be done about this!!!!!

Filed Jul 17, 2001 · Lights · NJ

Tail lights failed while driving. Check showed bad headlight switch connectors, melted in dash.

Filed May 19, 2000 · Lights · NY

Front headlight cover faded to a dirty white yellow color. This made it very hard to see at night. Driver had to use high beams to see at night.

Filed Dec 27, 1999 · Lights · MI

Headlight switch overheats causing the circuit breaker to fail and wiring harness to burn, 2 replacement of the headlight switch. Mjs

Filed Aug 11, 1999 · Electrical · IL

Was using high beams, all electrical system would flicker & then go out. Took to dealer & had it repaired. Problem later returned.

Filed Nov 10, 1998 · Lights, Transmission · NH

While driving the vehicle headlights malfunctioned, which, while in use, may turn off and cause visibility diffculty. Dealer replaced headlight switch. Also problems with the transmission. Please provide further information.