See also:

Acc
In this position the electrical accessories (radio, accessory power outlet, etc.) can be used. ...

Displaying radio PS (Program Service Name) and RT (Radio Text)
...

SI-DRIVE selector
When you rotate the SI-DRIVE selector to the left, the current SI-DRIVE mode changes to Sport (S) mode. When you rotate it to the right, the mode changes to Sport Sharp (S#) mode, and when you push it ...