Generally speaking CCS is a function of Engine Control Unit. It is controlled via stalk or MFSW and Instrument Cluster serves as a display to preset speed and confirm function activation. In some cases BCM is also involved.
ABS is involved only in the ACC alongside with the ECU and the radar(distance sensor/regulator).
To answer your question you would need to share the details of your ECU(01), ABS(03), BCM(09), IC(17). Are all of these on the same CAN network in your setup?
Have you compared CCS wiring diagrams between VW and Audi in question?