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How to unlock the immobiliser on the Smart Fortwo?

Model: Smart Smart 450 - Years: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Part: Checks and maintenance

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Video tutorial

If the immobiliser light appears on the Smart display and starting the vehicle is prevented, there are two possibilities. The first is to enter the cabin and lock the doors using the remote control.

Next, open the car with the same remote, wait 30 seconds for the doors to automatically lock, and start the car. In this case, the car will start as if the doors had never been opened, which prevents the immobiliser from activating. In the worst case, to unlock the immobiliser, it will be necessary to perform a diagnosis using an OBD scanner, as shown in the video.


Updated on 24 April 2026 by ScegliAuto


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