Data transfer for power supply

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

The CAS (Car Access System) forwards the data for the terminal control as follows:

Terminal R ON or OFF
Terminal 15 ON or OFF
etc.

The CAS switches the corresponding relays for the following terminals:

Terminal 15
Terminal 30g

The junction box electronics switch the corresponding relay for the following terminal:

Terminal 30 g-f

The control units on these terminals are supplied with power and "woken up".

The corresponding vehicle systems are activated.

The consumers are primarily supplied via terminal 30g and terminal 30g-f (only on vehicles with High equipment level).

However, certain consumers are also supplied directly from terminal 30.

For example, the anti-theft alarm must also be active when the ignition is switched off.