IF the startup tune is silent you have to tap the steering wheel volume control up in those seconds that you know it should be playing. ...
Maybe it just reset to default for so reason. Go back into INFO/SETUP to disable it.
1. Press [SETUP] > [Sound] > [Welcome Sound].
2. Touch [Modern], [Acoustic] or [Elegance]
to play the welcome sound you set when
the ignition switch is placed in the ACC ON
Touch [Welcome Sound OFF] to cancel it.
What I can't figure is that my AVC didn't work in my NAV and doesn't work in my Turbo. .. .
You do have it set in the menu, right?
AVC (Auto Volume Control)
1. Press [SETUP] > [Sound].
2. Touch [AVC] to control automatically the audio
volume according to the speed of the vehicle.
The indicator is illuminated. Touch [AVC] again
to cancel it.