Car Access System
WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.
The CAS control unit serves for redundant data storage. The following are stored in the CAS control unit (redundantly to the instrument cluster):
- Vehicle identification number
- Odometer reading
- CBS data