See also:

Selecting a channel
You can only listen to enabled channels. The selected channel is stored for the remote control currently in use. Via iDrive1.  "Radio" 2.  "Satellite radio" 3.  ...

Radio
When the same radio source is selected in the front and rear (e.g., FM/AM), the same radio station is played. Operation is the same as for the front radio. ...

Display visibility
The visibility of the displays in the Head-up Display is influenced by: Certain sitting positions. Objects on the cover of the Head-up Display. Sunglasses with certain polarization filters. ...