The immobilizer is an electronic anti-theft device which prevents unauthorised starting of the engine. If the car is locked and the intruder brakes into it by any means (braking the windows, using sharp tools to open the doors, etc…) the engine will not start. The immobilizing is only cancelled if the key/card sends an authorisation code through the central locking buttons. New encryption technology protects the system against electronically copied vehicle keys. However, no system can provide 100% protection against theft. If thieves possess the necessary skill and tools they may even be able to overcome the electronic immobilizer.
