Adjusting the volume of navigation announcements
Multimedia system:
Select Driving recommendation vol..
Set the volume.
To leave the menu:
select 
. Route guidance is active
Set the volume during a navigation announcement on the steering wheel or under the touchscreen More.
Switching audio fadeout on or off during navigation announcements
Press the button on the steering wheel.
button on the steering wheel. or
Tap on in the central display.
in the central display. Select Settings.
Select System.
Select Audio.
Switch Audio fadeout on or off.
To leave the menu:
select .