'91 Mercury Grand Marquis, Front door locks

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=52565
Printed Date: July 15, 2025 at 3:06 PM

Topic: '91 Mercury Grand Marquis, Front door locks

Posted By: mattr
Subject: '91 Mercury Grand Marquis, Front door locks
Date Posted: March 25, 2005 at 1:39 PM

Hi all,

I recently purchased a '91 Mercury Grand Marquis. The previous owner apparently installed an aftermarket alarm, a Code Alarm. My problem is this. My remote's arm button AND power lock switch (on the car itself) won't lock or unlock the front doors. What should I be looking for to fix this problem? Any suggestions are much appreciated.

Replies:

Posted By: mattr
Date Posted: March 25, 2005 at 1:45 PM

I should have mentioned that the back doors lock and unlock fine both with the controls on the door and the alarm remote.

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