Do it yourself
Frequently asked questions about cars and motorcycles

Where to find the control unit of the anti-theft system of the Volvo S40

Model: Volvo S40 MK 2 - Years 2004-2012

Today we will discover the instructions that will allow us to locate the central unit of the anti-theft system of the Volvo S40. First of all, we open the hood of the car, then we locate the anti-theft control unit which is usually found either above or next to the battery; in order to perform disassembly and replacement operations, it is necessary to disconnect the battery terminals first. The alarm system control unit is also connected to the fuse box; by disconnecting the wiring, it will be possible to remove and replace it if necessary with a new one, and then proceed with the programming.

Posted on 4 July 2025 by ScegliAuto

Video tutorial

Related tutorials

Volvo S40 (1995-2004 / MK 1) To gain free access to the OBD port of your first-generation Volvo S40, simply follow the procedure described in the following guide. First, you need…
Volvo S40 (1995-2004 / MK 1) Today's guide shows you where to find the fuses and how to replace them on the Volvo S40, as well as the V40. First, get inside the car and remove th…
Volvo S40 (2004-2012 / MK 2) This brief guide provides the main instructions on how to deactivate the electronic immobiliser of the Volvo S40 by following these simple steps. To …

Other guides you may be interested in

How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

Watch the video!


by ScegliAuto

More videos