Might these be "driving lights"?
Cars with "driving lights" have lights that are supposed to stay on all the time the engine is running.
These lights not only look like headlights, in fact some cars even have the headlights themselves come on when the engine is running. Look as some more (several) 2002 Grand Marquis's and see if they are the same.
Be blessed.
SOURCE: 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.
SOURCE: 2003 mercury grand marquis headlights will cut out
My 2003 Mercury Grand Marquis has the same problem. We found out it was the headlight module located under the dash above the gas pedal. The black box has wire connectors coming out of the back. Hitting the box worked for a little while, then I had to reach in the back and wiggle the wire harness. The dealership wants 500.00 to replace the unit. I consider Highway Robbery! They have installed a faulty piece of equipment on my Luxury car that could easily be life threatening but we know it won't be recalled until someone dies because of it. My husband was able to remove the unit and looked it over it had two circuit boards and he was unable to visibly see any problem or loose wire. He cleaned the connectors and used some electrical terminal grease on the wires, this improved it for a short time. The problem still exsists. I have sat for 30 minutes or more waiting for them to go through the On/Off cycle till they stay on for the 45 minute ride home from work. I have beat the box with my flashlight (maglights handle the abuse, my fingers and nails don't) till it came loose from the brackets that hold it. I leave my car running while pumping gas, short shopping trips and start it 20 or 30 minutes early before leaving for work. It is frustrating and dangerous. If this is the kind of quality in our American made cars it's no wonder they needed a BailOut! The only thing we have found to "fix" it is to find a used part that could possibly have the same problem shortly down the road or pay the theives at the dealership to replace it.
SOURCE: 2003 Grand Marquis headlights will not function in
have you checked the ground for the headlights
SOURCE: when I turn on the
This sounds like an issue with your ignition switch. Basically what is happening here is that you are shutting off your vehicle, but the ignition switch is not working correctly and is allowing certain accessories to stay on.
SOURCE: I have a 2001 Grand Marquis Mercury and my blower
Sounds like the blower relay is sticking. I would check that first.
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