CAS: Car Access System
The CAS control unit is the master control unit for all functions run by Comfort Access. The CAS control unit is the interface to the START/STOP unit. The START/STOP united comprises the START/STOP button and the ID transmitter fixture. The electric steering lock is also activated by the CAS control unit. The CAS control unit is connected through the body bus (sub-bus) to the following:
- Control unit for Comfort Access (CA)
- Electric steering lock (ELV)
| Item | Explanation |
|---|---|
| 1 | Central locking drive, driver's door |
| 2 | Central locking drive, door on the front passengers side |
| 3 | Junction Box Electronics (JBE) |
| 4 | Central locking drive engine, tailgate |
| 5 | Button in passenger's side outer door handle |
| 6 | Control unit for Comfort Access |
| 7 | Remote control receiver in inside mirror |
| 8 | Footwell module (FRM) |
| 9 | Electric steering lock |
| 10 | Driver's side outer door handle with button |
| 11 | START/STOP unit with START/STOP button and ID transmitter fixture |
| 12 | Car access system (CAS) |
The CAS control unit is also connected to the CA control unit through the body controller area network.
When the vehicle is in a rest state, communication may take place on the body bus without waking up the CAN bus system.