Video module
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
The amplified HF signals are applied at separate inputs to the video module. The signals are conditioned according to their subsequent use in the video module. The video module monitors current, voltage and field strength of the antennas connected to an input.