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 on the right.
button on the steering wheel on the right. or
Tap on in the central display.
in the central display. Select Settings.
Select System.
Select Audio.
Select Navigation & traffic announcements.
Activate or deactivate Lower audio for driving recomm..
To leave the menu:
select .