CAS: Control unit

The Car Access System (CAS) is the control unit that controls access to the vehicle (Comfort Access) and its functions (key identification, electronic immobiliser, release for engine start).

The CAS control unit is the master control unit for the power windows and central locking system functions. This means it checks the enable conditions before the junction box electronics control unit is permitted to activate the central locking system and the footwell module and junction box electronics control units are permitted to activate the power windows.

The CAS control unit is the master controller for the terminal control, i.e. it activates terminal 15, terminal 30B and terminal 50.

The electric steering lock is activated by the CAS control unit.

The CAS control unit evaluates the signals of the brake light switch and of the clutch module.

The CAS control unit is connected directly to the K-CAN2 (Body CAN2).