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Exterior lightingPart report

1994 Mercury Grand Marquis Exterior lighting Problems

Complaints
12about this part
Share
8%of 156 total for the year
Median mileage
95,364miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 12 complaints about the exterior lighting of the 1994 Mercury Grand Marquis, 8% of the 156 complaints for this model year. Where a mileage was given, the median is 95,364 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“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. …”

NHTSA complaint #10510680, filed 2013-05, 92,727 miles

“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!!!!!”

NHTSA complaint #760600, filed 2002-04

“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.”

NHTSA complaint #10946929, filed 2017-01, 98,000 miles

“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.”

NHTSA complaint #10873855, filed 2016-06, 100,000 miles

“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.”

NHTSA complaint #10816576, filed 2015-12

Exterior lighting: other model years

YearComplaintsShare of year
201028%
200914%
200856%
200755%
200664%
200529360%
200420759%
200320757%
200268%
2001117%
20002113%
19992012%
19981611%
1997196%
1996188%
1995169%
1994128%
1993118%
1992239%
199134%
198823%
198712%
1983114%

Other parts of the 1994 Mercury Grand Marquis

Vehicle speed control
33 complaints
Brakes
19 complaints
Transmission and drivetrain
18 complaints
Engine cooling
15 complaints
Visibility (wipers, defrost, mirrors)
13 complaints
Seats
12 complaints
Air bags
11 complaints
Electrical system
10 complaints
Steering
10 complaints
Fuel system
6 complaints
Other or unknown
5 complaints
Tires
4 complaints

← All problems reported for the 1994 Mercury Grand Marquis

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology