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

See also:
Components of the integrated Owner'sManual
The integrated Owner's Manual consists of
three parts, which offer various levels of information
or access possibilities.
Quick Reference Guide
Located in the Quick Reference is important inform ...
Switching on/off
Press the button. ...
Adjusting the volume
Turn the volume button while giving an instruction
until the desired volume is set.
▷ The volume remains constant even if the
volume of other audio sources is changed.
▷ The volume i ...
