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Replacing the Door Central Locking Mechanism

Model: BMW Serie 3 E46 - Years 1998-2006
Part: Car door

I will explain how to replace the central locking mechanism of your car. First, gather Phillips screwdrivers, Torx keys, and a trim removal tool kit. Disconnect the battery of your car to work safely! After that, let's start removing the door panel by unscrewing the Phillips screws located under the armrest. Use the trim removal kit to detach the clips on your door. After removing the airbag clips, you will find a Phillips screw; remove it, and then detach the panel, but not completely, as you need to disconnect all the connectors first. Once everything is disconnected, remove the panel. Now, you will need to disassemble the window regulator mechanism and also remove the glass for easier access later. After removing the glass and the window regulator, use a Torx key to remove the screw located in the left hole of the door that holds the lock cylinder, and then the three screws that secure the door lock, being careful with the connector that you need to disconnect. Now, get the new replacement part and reassemble everything in reverse order, and your job will be complete.

Updated on 26 February 2026 by ScegliAuto

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