See also:

Automatic update
About twice a year, Sirius performs an update of the channel names and positions. The update takes place automatically and may take several minutes. ...

Adjusting the height
Adjusting the height ▷ To raise: pull. ▷ To lower: press the button, arrow 1, and push the head restraint down. The center head restraint cannot be adjusted in elevation. ...

Priority options
The driver has priority The source selected via iDrive in the front is output on the vehicle loudspeakers and can be selected but not operated from the rear. Other audio or video sources ...