04 range rover door lock issues

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=121801
Printed Date: September 13, 2025 at 5:31 AM

Topic: 04 range rover door lock issues

Posted By: kiteman
Subject: 04 range rover door lock issues
Date Posted: May 12, 2010 at 2:52 PM

I have installed a viper alarm on a customers 04 Range Rover HSE.. Every thing works except for the doors.. This vehicle has that power down feature, .. So if i'm sitting in the vehicle, with the doors closed I can turn the key on then off the alarms works fine and locks and unlocks the doors.. As soon as I open the door and leave, shut the door. I can alarm/lock the door fine but as soon as you hit disarm/unlock, I only get disarm, the doors will not unlock.. Does anyone know what the cure for this problem is? I have try powering up the ignithion for a split second, but that only causes the factory alarm to trigger???

Replies:

Posted By: howie ll
Date Posted: May 12, 2010 at 5:07 PM

Try powering the alarm or the lock circuit or both directly from the battery or an internal fuse box power supply.
You should always test for sleeper circuits and try to avoid them.

Posted By: kiteman
Date Posted: May 12, 2010 at 6:59 PM

The alarm still has 12 volts on it, it will arm and disarm, it just will not unlock the door.. The door locks power down,, I can not figure out how to repower up that system, I have tryed sending 12 volts to the igniton, just makes the factory alarm go off, i tryed waking up the dome light and a double pulse unlock and nothing still will not unlock

Posted By: t&t tech
Date Posted: May 13, 2010 at 6:13 AM

How it awakens is what you must decipher! Pulsing the dooor trigger wire might be the cure!

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