Receiver, Remote Control: General: Function
WARNING: This page is about a different car, the 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The integrated receiver antenna receives the coded signal from the remote control. The signal is processed and is sent on to TWICE which is set to identify the programmed remote controls for the car. If the received signal is correct, the command is executed.