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Last Fall, (Oct. 2011) we were coming back from Louisville, pulling a boat trailer at 8:00. All of a sudden, we lost all lights on a rural highway. We pulled off, and I thought the problem was the trailer lights, which I unplugged. The lights worked, and we got home.
Two months ago (Oct. 2012), we were on a rural road (no trailer), and they went out again. I had to use emergency flashers to get home. I called the dealer, and he said they replace the lighting module ($512) on the Marquis, all the time. I got on this forum and verified that was the problem.
I got the dealer to change the module (it took two visits, as when first installed, they loosened an inline fuse) -- I got a break on the parts and labor due to family employee. Voila! All is well. In fact, I never liked the wimpy headlights on the Marquis, compared to my BMW. I had switched to high intensity bulbs in the Marquis, but that didn't help much. BELIEVE IT OR NOT, WITH THE NEW MODULE THE LIGHTS ARE TWICE AS BRIGHT.
The Daytime Running Lamps (DRL)is located at center front of vehicle, on front of upper radiator support.
"Fire...good. Fire in car....BAD!"
sorry about the DLC...that's what the manual told me when I looked it up for you. In the diagram it looks to be more to the right (passenger) side of the radiator shroud, next to the outside temp sensor. This is a '94 GMarquis, right?
Somewhere on this string are pictures of where the LCM is located (under the dash to the right of the steering wheel) and the part # of the relay.
Panthers had a headlight switch problem for this very reason until they came factory with a relay system. You may find your headlights are brighter with the new switch too.
If you're a bit handy and you're planning on keeping it you can also fix the problem pretty much permanently by converting to a relay system, as I have with my 85 Town Car. It did make the headlights noticably brighter too.
http://audi.humanspeakers.com/headlight-simple.htm (wiring colors and lengths not correct. I also used 8 ga for main power)
Good luck
Was wondering if it's just the light switch or could I have pinched a wire when tightening those two bolts?
Someone thought there might be a lighting control module or something called an autolamp dual coil relay. Doe anyone know anything about this?
I have a question regarding the LCM. Can it also affect the radio and climate control? I'm having all sorts of crazy electrical problems where on my 1999 Grand Marquis the entire instrument panel, radio, blinkers, climate control and interior lighting do not work. Each of these comes and goes individually, but it seems like the two that are dead the most often are the climate control and blinkers. Thanks!
For all those having problems with 2003 thru 2005 grand marquis, crown vic lighting control modules for just extended the warranty on these take it to your local for dealer and they will replace it for free. refernce recall 14N01
This program extends the warranty coverage on the lighting control module to 15 years of
service or 250,000 miles from the warranty start date of the vehicle, whichever occurs first.
This is a one-time repair program. If a vehicle has already exceeded the mileage limit, this
coverage will last through October 31, 2014. Coverageis automatically transferred to
subsequent owners.
VEHICLES COVERED BY THIS PROGRAM
All 2003 through 2005 model year Crown Victoria and Grand Marquis vehicles built at the St.
Thomas Assembly Plant from Job #1 2003 through Job Last 2005. Affected vehicles are
identified in OASIS.
OWNER REFUNDS
• Ford Motor Company is offering a refund for owner-paid repairs covered by this program
if the repair was performed before the date of the Owner Notification Letter. This refund
offer expires October 31, 2014.
• Dealers are also authorized to refund owner-paid emergency repairs that were
performed away from an authorized servicing dealer after the date of the Owner
Notification Letter. There is no expiration date foremergency repair refunds. Noncovered repairs, or those judged by Ford to be excessive,will not be reimbursed.
• Refunds will only be provided for the cost associated with replacement of the lighting
control module.
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