The headlight would not come on. This first happened 2007, vehicle was inspected and repaired. Under warranty headlight modular. This happened again june 2011. Headlight modular needs to be replace again.
2004 Mercury Grand Marquis lights complaints
Page 7 of 8: complaints 161 to 190 of 209, newest first, as owners wrote them.
Tl* the contact owns a 2004 mercury grand marquis. The contact stated that the exterior headlights would fail intermittently. The dealer diagnosed that the computer module failed and would need to be replaced. The vehicle was in the process of being repaired. The manufacturer was not contacted. The failure and current mileage was 80,000.
Tl* the contact owns a 2004 mercury grand marquis. The contact stated that while driving 30 MPH at night, the headlights and the interior lights would suddenly malfunction and stop illuminating, increasing the risk of a crash. The vehicle was taken to an authorized dealer, where a diagnostic test indicated that the head light control module was faulty. The contact did not have the headlight control module replaced. The failure mileage was 150,000.
Tl* the contact owns a 2004 mercury grand marquis. The contact stated the vehicle headlights and windshield wiper failed. The vehicle was taken to the local mechanic who performed a diagnostic that located the failure at the headlight control modulator and the windshield wiper motor. The manufacturer was contact and but provided no assistance. The vehicle was not repaired. The failure mileage was 70,000 and the current mileage was 90,000.
Head light turn off while driving for no apparent reason , then cycle back on for a few minutes and then turn off again , this continues with out end.
All headlights quit without notice of any sort. After replacing bulbs and switches, I went directly to ford. They charged almost $700.00 to replace the "processor lighting control", which the service clerk explained was likely the problem. Since ford knew this was a problem, why did they not recall the vehicles having this problem. We could have had a very serious accident.
Head lights on my 2004 mercury grand marquis will not come on. Parking lights work and hi beams. Got pulled over by columbus oh police department because I was driving with hi beams on. This is the second time that this has happened.
2004 mercury grand marquis headlight will not come on. Must hold high beam lever to use headlights and drive with one hand. I replaced the light assembly didn't help.
When driving at night the low beam headlights go out while vehicle is in motion. This failure is unpredictable and leaves the driver literally "in the dark" with the vehicle moving at whatever speed and direction it is going at. This is definitely a serious safety issue as my research has found that this is a common failure of the vehicle's "light control module" (lcm). Further research reveals that the ford / mercury automotive dealerships maintain a ready stock of this part for replacement at the hefty average price of $ 700.00. Given the severity of this safety issue it is difficult to understand why there has been no apparent action by the federal safety agency to require a recall by the manufacturer. This failure recurs frequently and unpredictably.
Vehicle has defective lighting control module (lcm). Headlights would not turn on until lcm was kicked. (lcm is mounted directly above gas pedal) now headlights are turning off while driving. (but come back on if the lcm is kicked. ) looking at ebay there are many companies that offer a total upgrade of your existing lcm. They install heavier duty relays. The part # on my lcm is 4w7t-13c788-aa. So it is evident that there is a problem with many lcm's in and around that model year.
The nighttime head lights failed on the mercury marquis. 2004 model; we brought the car into the dealership to have the module replaced which is expensive.
My 2004 mercury grand marquis headlights keep turning off without warning at night. I almost killed a pedestrian as the lights went out at night and I couldn't see before stopping the car. I did however strike the empty babystroller they were pushing which contained groceries. I'm told by the dealer that it is a module. Costing $500. Plus $99 an hour to diagnose ( which will of course be a min of two hours ) ad then the labor for total of about $1,000. This seems to happen more often the not. I've looked online and found lots of people with the same problem. Fortunately there have been no injuries or deaths yet as a result that I'm aware of. So when there is a death because of this, whose is going to tell the family that this was aproblem that could have been avoided or fixed. We should have to wait for injury or death for action to be taken. The dealer ( lincoln mercury) says its a defective part ( module). This is a safety issue since you can't legally drive a car @ night without lights. Please look into this and make something happen, please !
2004 mercury grand marquis outside lights goes off and on intermittently. I have 72,000 miles on my car. It suddenly happen one day while I was driving at night from my second job on the highway. It scared me nearly to death and is very dangerous.
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.
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.
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
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.
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.
Tl*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 *bf the consumer stated the inside lights went out as well. Updated 05/09/11
Driving at 75 miles per hour at night on interstate 40, the headlights and dashlights went out on the 2004 mercury grand marquis.
Tl*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.
Headlights randomly turn off. Doesn't seem to matter if I'm driving or not.
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 $700.00. I think mercury should bear some or all of the responsibility for this as it will eventually cause a very severe accident.
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.
Tl* the contact owns a 2004 mercury grand marquis. While traveling 50 MPH the contact noticed that the headlights had suddenly shut off without warning. The vehicle was taken to the dealership where the contact was informed that the lighting control module needed to be replaced. There were no prior warnings and the vehicle has not been diagnosed. The current and failure mileages were 44000. The VIN was unavailable
Tl* 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*bf the consumer stated the vehicle was repaired at a cost of $511.00. Updated 12/01/10
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.
2004 mercury marquis headlights would sporadically stop working.
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 $700.00.
Tl*-the contact owns a 2004 mercury grand marquis. The contact was driving approximately 20 MPH, the front headlights failed. Immediately, the highbeam switch was engaged and required assistance to manually hold for the headlights to operate. The failure occurred sporadic. The authorized dealer was notified and the technician informed the replacement part required for the headlights to function properly. The vehicle had not been diagnosed or repaired at the time of the complaint. The failure mileage was 64,000. The current mileage was 70,000.
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