Switching between letters and numbers
Depending on the menu, you can switch between entering letters and numbers:

See also:
The concept
> The voice activation system can be used to control functions by spoken commands.
> Functions that can only used when the vehicle is stopped cannot be operated using
the voice activation sys ...
Switching on/off manually
Press the button.
On: the LED lights up.
Off: the LED goes out.
...
Selecting a category
1. "Radio"
2. "Satellite radio"
3. "Category"
4. Select the desired category. ...
