Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to deactivate the anti-theft system of our car

Model: (Various brands) Various
Part: Onboard computer

This video explains to us in a general way how to deactivate the alarm of our car, without indicating a specific model. Generally, these systems rely on a transponder, contained in the key of our car, which communicates with the ECU, letting it know that we are in possession of the key; however, this communication sometimes fails, and the car does not unlock or start. We are then given some suggestions to overcome this inconvenience: by putting the key in the door, and holding it in this position for about 20 seconds, the problem is generally resolved. In fact, the car has time to recognize it. Another method is to disconnect the positive pole of the battery, and leave it like that for about 15 minutes.

Posted on 10 August 2025 by ScegliAuto

Video tutorial

Related tutorials

Replacing the Steering Lock on a Vespa
Replacing the Steering Lock on a Vespa
(Various brands) Various This video explains how to remove the anti-theft device on a Vespa. This procedure can be useful if you lose the vehicle key. First, remove the cover…
How to Engage and Disengage the Block Shaft Anti-Theft Device
How to Engage and Disengage the Block Shaft Anti-Theft Device
(Various brands) Various The Block Shaft device is a mechanical anti-theft system permanently installed on the steering column: it is essentially an additional steering lock …
How Does the Anti-Theft Tag Work?
How Does the Anti-Theft Tag Work?
(Various brands) Various The anti-theft tag is a device that helps prevent car theft: when the driver exits the vehicle with the tag, the thief can only drive the car for a f…

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