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NHTSA — Exterior Lighting Problems


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
2 / 0
Average Mileage:
76,965 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Mercury Grand Marquis lights problems

lights problem

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2004 Mercury Grand Marquis Owner Comments (Page 7 of 8)

« Read the previous 20 complaints

problem #24

Mar 212011

Grand Marquis 8-cyl

  • 112,800 miles


Headlights go out while driving. They will stay off for a 2 or 3 min. And will come back on for a while, then go off again. I have had the light go off in a 5 mile drive 4 times. This is very dangerous. I have not had a crash, but was pulled over by the police. I have replaced one part, the multi-purpose switch and it had no effect on the lights. After several days of research I believe the cause is the light control module, this part runs from 400 to over 700 dollars. I am on a fixed income and do not have the money to fix this problem. Ford should be the one to replace the part. The headlight switch has nothing to do with the lights going out. Since the purchase date the switch was on auto, after changing the M-P switch I put the headlights on manual on/off. This problem has being going on for over 2 months. The problem has not been fixed. No funds.

- Bentonville, AR, USA

problem #23

Mar 082011

Grand Marquis 8-cyl

  • 88,670 miles
Loss of headlights while night driving. This happened on two different occasions. Correction required was the replacement of the lighting control module (lcm) on a 2004 Mercury Grand Marquis gs ($512,00). We understand this problem entails 2000 to 2007 Ford Crown Victoria and Mercury marquis models only, and Ford Motor Co, has received numerous complaints about this happening but refuses to issue a recall notice.

- Spofford, NH, USA

problem #22

Jan 262011

Grand Marquis

  • miles
I was driving my vehicle and the headlights just turned off. I could not see the road. It lasted for about a minute where I have to stop on the side of the road and wait. After that they turned on. Then a few days later they did the same thing. This has happened about 10 times

- Patchogue, NY, USA

problem #21

Feb 122011

Grand Marquis 8-cyl

  • 78,000 miles


Headlights on my 2004 Mercury Grand Marquis stopped working while driving. All of the fuses are ok so problem is somewhere else. Parking lights and blinkers still work. Can hold the high beam lever towards the driver seat and lights will come on but I must hold the lever in while driving with one hand.

- Houma, LA, USA

problem #20

Jan 102010

Grand Marquis 8-cyl

  • 85,000 miles
The headlights do not stay on. The lights may or may not go on initially but can go out at any time making driving hazardous. The only way to make them light is to hold the handle in the "bright light" position." I have contacted Ford with the problem and several dealers to no avail. This has been happening for approximately a year. A related problem seems to be that the air conditioner blower stopped working and the brake light stays on all the time. Judging from the complaints I have read on the internet, many people have all three problems at once.

- Mesquite, NV, USA

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problem #19

Oct 092006

Grand Marquis 8-cyl

  • Automatic transmission
  • 70,000 miles
The contact owns a 2004 Mercury Grand Marquis. The contact stated that since 2008, the headlights would turn off intermittently. The lights would turn on once the doors were opened but when the vehicle was started, they would turn off. The dealer inspected the vehicle and stated that the failure was caused by the computer which was replaced. However, the failure occurred again. The failure mileage was approximately 70,000 and the current mileage was approximately 110,000. Updated 02/23/11 the consumer stated the inside lights went out as well. Updated 05/09/11

- Neosho, MO, USA

problem #18

Sep 252010

Grand Marquis 8-cyl

  • 119,235 miles


Driving at 75 miles per hour at night on interstate 40, the headlights and dashlights went out on the 2004 Mercury Grand Marquis.

- Flora Vista, NM, USA

problem #17

Oct 092010

Grand Marquis

  • 83,000 miles
The contact owns a 2004 Mercury Grand Marquis. The contact stated that the headlights failed; they turned on and off intermittently. A mechanic inspected the vehicle and stated that the headlight control module was the cause of failure. The contact called the manufacturer who took a complaint but offered no further assistance. The vehicle had not been repaired. The failure mileage was approximately 83,000 and the current mileage was approximately 84,000.

- Pooler , GA, USA

problem #16

Oct 012010

Grand Marquis 8-cyl

  • 91,000 miles
Headlights randomly turn off. Doesn't seem to matter if I'm driving or not.

- Crainville, IL, USA

problem #15

Oct 202010

Grand Marquis

  • 110,000 miles
Driving home at night in my 2004 Mercury Grand Marquis all of a sudden my headlights went out. The only way to have headlights was to manually hold back the high beam mechanism on the steering column. Eventually they will come back on for a while but cut off again. Through research I found out it is a lcm module and can be fixed for approximately $700. I think Mercury should bear some or all of the responsibility for this as it will eventually cause a very severe accident.

- Belville, NC, USA

problem #14

Aug 292010

Grand Marquis

  • 49,500 miles


Headlights went out while driving the vehicle. This was on a dark, dark, 2 lane country road with little or no shoulder. Using the high beam "hold" function light would come on high beam. Working switches would not bring lights back on. Checking lights later, found lights would go out within 5 mins - stay out for less than 5 mins and then repeat. Repair was the lcm module which dealer charged aprox. $700 to fix. Very dangerous and scary! tail lights did stay on.

- New Boston, MI, USA

problem #13

Aug 092010

Grand Marquis

  • 149,000 miles
The contact owns a 2004 Mercury Grand Marquis. While driving at a very low speed, the headlights failed. The vehicle was taken to an independent repair shop where he was informed that the lighting control module would need to be replaced. The vehicle was not repaired. The VIN was not available. The failure and current mileages were 149,000. Updated 11/16/10 the consumer stated the vehicle was repaired at a cost of $511. Updated 12/01/10

- Marlborough, MA, USA

problem #12

Jul 012010

Grand Marquis

  • 52,000 miles
2004 Mercury Grand Marquis. Headlights began going off by themselves while I was driving and will not come on at most of the time. Every indication I have is it is a faulty lighting module control. This is very dangerous and it is only a matter of time before someone or me is killed because the lights will suddenly go off on a dark winding load. Please consider a forced recall on this problem immediately.

- Indianapolis, IN, USA

problem #11

Jul 172010

Grand Marquis

  • 82,500 miles
2004 Mercury marquis headlights would sporadically stop working.

- Reading, MA, USA

problem #10

Jun 172010

Grand Marquis 8-cyl

  • Automatic transmission
  • miles
Letter from congressman jones on behalf of constituent re problems with the headlights on her 2004 Mercury Grand Marquis (dot/I#2010-2172) the consumer stated while driving, the headlights went completely out. The consumer took the vehicle to the dealer. Upon inspection, the dealer stated the entire lighting module needed to be replaced at a cost of $700.

- Greenville, NC, USA

problem #9

Apr 032010

Grand Marquis 8-cyl

  • 80,000 miles
I am currently having problems with my 2004 Mercury Grand Marquis with the head lights not coming on or going out. All other light stay on. Turning the light switch on / off and it won't come on. Same symptoms in auto or manual headlight mode. If I stop the car it will come back on. It then might go off after a while. I see others have had this same problem, this was confirmed by my local Ford dealership. Very common problem with serious safety concerns. Dealer tells me it is a failure of the light control module (lcm).

- Hillsborough, NC, USA

problem #8

Jun 212009

Grand Marquis

  • 80,000 miles
The contact owns a 2004 Mercury Grand Marquis. The contact stated that the headlights suddenly stopped working. In addition, the turn signals and bright headlights would only illuminate whenever the switch was held. As soon as the switch was released, the lights would dim again. In order to drive at night, the contact would have to hold the switch at all times. The failure has occurred on three occasions. Usually, the headlights work normally when the vehicle is parked overnight. The contact scheduled an appointment with the dealer, but they have not yet inspected the vehicle. He believes that this is a manufacturer defect. The failure mileage was 80,000 and current mileage was 83,000.

- West Seneca, NY, USA

problem #7

Jul 052009

Grand Marquis

  • 100,600 miles
Light controler shuts lights off at night while driving. The only way to get lights to drive with is to hold dircetional signial handel up with one hand and drive with the other.

- Middletown, DE, USA

problem #6

Jun 062009

Grand Marquis

  • 96,500 miles
While driving at night with the headlight switch in the automatic selection the headlights went out. This was on June 6, 2009, at 11:00 P. M. then on June 27, 2009, at 9:10 P. M. while turning onto an interstate highway the headlights went out again. This time the headlight selection switch was in the manual mode. Both time the highbeam selection switch was pulled and after a 15 to 20 minute period the headlights came back on.

- South Windsor, CT, USA

problem #5

May 152009

Grand Marquis

  • 85,000 miles
2004 Mercury marquis. After 2-3 hours of driving with the headlights on, they will go out. All other lights continue to work properly. This is a very dangerous situation. I stopped the car and continued with my trip during the daylight. I believe this is a problem with the lighting control module and is a common problem.

- Farmington, NM, USA

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