I just noticed when moving the Vic tonight that I have no park/running lights/rear plate lights. Headlights work fine, as do the brights. Dash lights up like normal. All I have is headlights. Brake lights work when pedal is pressed and the chime dings when I turn the headlight switch to park mode as to indicate the lights are on. Is this another LCM failure?
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These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test. -
Could be as faulty LCM's do some strange things!What I Own: 1993 Mercury Grand Marquis GS
What I Help Maintain: 1996 CV / 1988 CV / 1988 Tempo -
try fastblackmerc. He ma be able to help you. Also there may be some writeups here about replacing the relays which go bad in the LCM03 Marauder DPB, HS, 6disk, Organizer Mods> LED's in & Out, M&Z rear control arms, Oil deflector, U-Haul Trans Pan, Blue Fuzzy Dice
02 SL500 Silver Arrow
08 TC Signature Limited, HID's Mods>06 Mustang Bullet Rims 235/55-17 Z rated BFG G-Force Comp-2 A/S Plus, Addco 1" rear Sway, Posi Carrier, Compustar Remote Start, floor liners, trunk organizer, Two part Sun Visors, B&M Trans drain Plug, Winter=05 Mustang GT rims, Nokian Hakkapeliitta R-2 235/55-17
12 Escape Limited V6 AWD, 225/65R17 Vredestein Quatrac Pro, Winter 235/70-16 Conti Viking Contact7 Mods>Beamtech LED headlight bulbs, Husky floor linersComment
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Here's a link to the write up on CVN: https://www.crownvic.net/ubbthreads/...Number=1437302
Here's the pic of the relay layout:
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
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Thanks guys. Appreciate the pic from Sly. Now that I see that, it's the same pic that I used when I replaced the headlight relay on it many moons ago and hasn't shown any issues until now. I checked fuse 21 tonight and it was good. I gave the LCM a few good smacks while I was under there are low and behold all my parking lights came back up. I left them on and jiggled the wire harness and smacked the LCM quite a bit to see if I could get them to shut off again but so far they're still working.
Spoke with Chris at ADTR and he still has rebuilt LCM's for sale for these years. Might just be worth the money to have an updated one and move on. I have zero time to mess with this right now and I can't afford to have it go into "dark mode" randomly.These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.Comment
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