Speed-Sensitive Volume Compensation (SVC)
All audio systems are equipped with speed-sensitive volume compensation (SVC). The audio-navigation unit or the audio unit receives the vehicle speed pulse (VSP) from the PCM. The system processes the speed input and increases the navigation system or the audio system volume level as the vehicle speed increases to compensate for the interior noise that occurs at higher speeds. When the vehicle slows down, the volume returns to its normal level. The SVC has four settings: SVC OFF, SVC LOW, SVC MID, and SVC HIGH that can be adjusted using the audio-navigation unit or the audio unit. The factory default setting is SVC MID.
To change the audio unit SVC setting, press the tune folder sound knob repeatedly until the SVC is displayed, then rotate the knob to adjust the SVC to the desired setting (SVC OFF, SVC LOW, SVC MID, or SVC HIGH).
To change the audio-navigation unit SVC setting, press the AUDIO button, and then select the Sound Setup from the AUDIO MENU on the navigation display. Rotate the interface dial to select the desired setting (SVC OFF, SVC LOW, SVC MID, SVC HIGH).