Brief description, anti-theft alarm: General
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The theft protection of the car consists of two functions, immobilizer which is standard on all cars except cars with OBDII which has a simpler form of so called start interlock and theft alarm as an option. The theft protection functions are controlled by TWICE.