Speed Dependent Volume
The entertainment system volume can be set to vary automatically with the speed of the vehicle to compensate for additional background noise. The speed dependent volume can be selected between Off / 1 / 2 / 3 / 4 / Max. Use the trip computer switch UP or DOWN button to scroll through the selection.
The Speed Dependent Volume is set to 2 if the Restore to Factory Settings option has been selected. If no selection is made at the Speed Dependent Volume screen within 5 seconds, the Help screen message appears.