Audi MMI   Controls  System settings
Select: MENU button > Tone.
Navigation* control button
Volume of spoken cues/In-car entertainment fader: Volume of navigation cues while route guidance is active. The in-car entertainment fader is an option that reduces the volume of the current audio source when the parking aid is active or a navigation cue is being played.
Voice guidance: see Link
Navigation cues during call: see Link
Entertainment control button
Traffic programme: see Link
Traffic programme volume: You can adjust the volume of a traffic announcement by turning the rotary pushbutton.
Telephone* control button
Ring tone selection: Refer to "Telephone settings" in the "Other settings" section.
Ring tone volume/Volume of telephone call: The volume of the selected ring tone/the volume of the telephone call can be adjusted by turning the rotary pushbutton.
Systems control button
Speech dialogue system volume: Turn the rotary pushbutton to adjust the volume of the spoken cues.