See also:

Setting the language
Press the adjustment button for 12‑13 seconds. Briefly press the adjustment button again to switch between English "E" and German "O". The setting is automatically saved ...

Activating HDC
Press the button; the LED above the button lights up. ...

Navigation data
Information on the navigation data 1. "Navigation" 2. "Options" Open. 3. "Navigation system version": information on the data version is displayed. Updating the nav ...