Menu navigation
You can use the thumbwheel and buttons 1 to navigate through the menus.
▷ Turn the thumbwheel: select a menu item.
▷ Press the arrow buttons: change between
fields.
▷ 
Press the button: activate the
menu item.
See also:
Winter tires
Do not drive with a tire tread depth of less than
0.16 in/4 mm.
Below a tread depth of 0.16 in/4 mm, tires are
less suitable for winter operation. ...
Status field symbols
The symbols are grouped as follows.
Radio symbols
Telephone symbols
Entertainment symbols
Additional symbols
...
Switching on/off manually
Press the button. ...