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View Full Version : 2000 mercury grand marquis


daleap2
Oct 29, 2007, 02:50 PM
My interior lights will not shut off I can't even find the door switch to check if it is stuck I finally had to remove the bulbs

doctortemsah
Jun 7, 2008, 12:59 AM
If your car has door numbers chech if some buttons are stuck or making circuit shortage. Try to check it out or make a repairer to disconnect it. It causes the interior lights to turn on.

CaptainRich
Jun 8, 2008, 06:12 AM
my interior lights will not shut off i can't even find the door switch to check if it is stuck i finally had to remove the bulbs
Your problem is likely the Lighting Control Module (LCM). Although it receives various inputs that can turn the lights on, but if any of those inputs were the problem, the LCM should "time out" and turn the lamps off automatically.
A well educated technician with the proper diagnostic scan tool can check the door status to verify the control module is "seeing" the correct inputs.