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Posted on Dec 19, 2018
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2004 mercury grand marquis daytime running lights not working after dealership installed bypass on light control module

1 Answer

john h

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  • Mercury Master 29,494 Answers
  • Posted on Dec 19, 2018
john h
Mercury Master
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Joined: Jun 07, 2009
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They wont if module is bypassed

5 Related Answers

olds97_lss

Bryan L

  • 1 Answer
  • Posted on May 13, 2009

SOURCE: Mercury grand marquis 1997 temperature control

I'm not sure if yours is identical to mine since yours is second gen and mine is third gen, but with mine (1998 MGM), the heat was stuck on all the time. Full heat would practically cook your feet and you couldn't shut it off.

It was a servo/servo arm that controls the hot/cold mix door. The part was $15. The labor was $700. They had to take the entire dash out of the car to get at the part. Required two more visits due to a missed electrical connection to a daylight sensor and a vacuum issue that made the car stall when put into reverse.

My car had 150K on it at the time. Has 165K on it now. Still runs great and looks great. It's now my wife's auto and I drive a 2006 MGM.

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Anonymous

  • 25 Answers
  • Posted on Jun 26, 2009

SOURCE: How to disable the daytime running lights 2004 Subaru Outback LLB

Sorry to inform you, but I have been trying to solve this problem for a customer of mine who is in the military. Subaru will not release any information on how to do this.

ginolena

  • 58 Answers
  • Posted on Jul 25, 2009

SOURCE: Odometer stopped working

output shaft speed sensor in the transmission

kirtec auto

  • 1348 Answers
  • Posted on Jan 29, 2010

SOURCE: Stop and TS problem

there is a flasher
.the hazard is wired to constant power so it works with the ignition off.
the turn signal works off of a switched power,to the turn switch and either the right or left turn signal.
if a bulb burns out,the light stays on steady

Anonymous

  • 5 Answers
  • Posted on Jul 10, 2010

SOURCE: where is the lighting control module on a 2005

it is located under steering wheel to your right

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2004 Mercury Grand Marquis LS. Does anyone have the color code wiring diagram for it please?

Question edited for clarity.
Question moved to model category.

Very strange. I just answered this question. Did you post twice? It was about the factory recall? I suggested calling the dealership and telling that the module has failed and you need to be fast tracked for a fast replacement.

Here is the wiring diagram

https://www.google.com/search?q=2004+mercury+grand+marquis+ls+headlight+wiring+diagram

..
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Headlights don't work unless you hold high beams

Check the headlight Relay and/or fuses - should be in the fuse panel.
GL,
Td
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2007 Marquis. No interior lighting. Power door and truck locks do not work. Keyless entry dark. Originally the truck release would work intermittently from the door button or the key fob. A day later...

You pobably have a problem with the lamp control module , or the SCP serial data network . Vehicles that have more then one control module , like your vehicle ! The modules share info an send control messages on the data network . The door lock's are controlled by driver door module an is also on SCP network .
Communications Network Information Module

The first step in diagnosing these type problems would be to hook up a professional type scan tool . Check codes an see if the module's are all talking .
Your best bet , take it to a qualified repair shop .

Dorman Lighting Control Module Installation Crown Victoria Marauder Grand...

what is lighting control module and what does it look like on 2004 Mercury...
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Had to replace drl module because daytime light were not working did that now my daytime running lights stay on with or without car running what should i do next

Hello ajwatts.

Did you replace it with a new module or a used one?
These modules are notorious for problems.
The module you put in is shorted out causing your lights to stay on.

KL
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Daytime driving lights don t go off even when key is turned off. WHY

Check switch and wires for a short, or replace the lighting control module.
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Where is the door chime on a1995 mercury grand marquis

It's the same as the lights left on and the key in door open its called the generic eletronic module and it's in the dash to the right of the steering collum. Why do you want to know as all kinds of things are run by this device and it costs plenty. If it keeps chimbing and you want to stop it all kinds of things don't work with it unplugged ( interior light's cruise control, air conditioner and heat,Radio,Automatic headlights. Daytime running lights) If its saying the doors open, it is! Just because it looks closed doesn't mean that they are the most likly is the driver door and the switch is in the door latch that holds the door closed. The switches rust break fall off or get disconnected. worset problem is the wire from the switch breaks in the door hinge area and the wire will need to be found and replaced or repaired. The modules seldom fail unless submererised in water or the battery hooked up backwards or jumped off wrong battery cable removed while the engine in running but alot of this other stuff will work wrong too.
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Headlights work intermitently

HI,Inspect the #27 fuse holder of the Central Junction Box (CJB) for a questionable contact issue with the male spade of the fuse, which may cause intermittent loss of contact.if ok sounds like you need lcm= light control module.
1helpful
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Lights on 2000 Mercury Grand marquis will suddenly go out while

please rate as solved if this fixes your issue. Let me know too.

I believe you have a bad LCM, Lighting Control Module. Or, the connectors to it have corrosion maybe. The module is above the brake pedal. It is very expensive. You can buy one at discount from tascafordparts.com. Sometimes, ebay has one too. But, you need one for your year car. Match the part number on your LCM.

Here's how to get it out.

SECTION 419-10: Multifunction Electronic Control Modules 2000 Crown Victoria/Grand Marquis Workshop Manual
REMOVAL AND INSTALLATION Module —Lighting Control (LCM) Removal
  1. sya~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Prior to removal of module, it is necessary to upload module configuration information to a scan tool. This information needs to be downloaded into the new module once installed. For additional information; refer to Section 418-01 . (I replaced one without doing any programming, so I don't think this applies).

  1. sya~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.
    Disconnect the battery ground cable.
  1. Remove the LH instrument panel lower insulator.
    1. Remove the pin-type retainers.
    1. Disconnect the courtesy lamp.
    1. Remove the LH instrument panel insulator.
  1. Position the LCM aside.
    1. Remove the screws.
    1. Release the locking tab.
    1. Position the LCM aside.
  1. Remove the LCM.
    1. Disconnect the electrical connectors.
    1. Remove the LCM.

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