CA: Comfort access system

With the optional equipment 322 "Comfort Access" (CA), an ID transmitter is required instead of the usual remote key. The ID transmitter also performs standard master key functions. The control unit for Comfort Access (CA control unit) activates the interior aerials and the exterior aerials. An ID transmitter scan is carried out. At the same time, the FBD receiver is activated for any ID transmitters which may respond (FBD: remote control service). The CAS control unit is the master control unit for all functions of the optional equipment "Comfort Access":