Central locking system (Ver.1): Notes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
The central locking system is split over several control units. The Car Access System (CAS) monitors all the processes in the central locking system. The CAS control unit is the master control unit for the central locking system.
The control units for the central locking system are:
- Car access system (CAS)
- Footwell module (FRM)
- Junction Box Electronics (JBE)
The CAS control units use the prompts from various operating points (e.g. lock barrel, ID transmitter, comfort access) to decide what needs to be done:
- Locking/deadlocking the central locking system
- Unlocking the central locking system