Volume/Power Control; Speed Sensitive Volume - Lincoln Navigator 2000 Owner's Manual

Controls and features
Your audio system is equipped with selective lighting, a unique lighting
strategy. This lighting feature is operable when the headlamps are
illuminated. During the operation of any selected mode, lighting for the
individual function controls will either illuminate or turn off. Those
controls which have a function for the specific mode of operation
selected will be lit, while the controls which have no function for that
mode will be turned off.
The Alpine Audio System is equipped with a delayed accessory feature.
This feature enables the audio playing media to continue playing up to
10 minutes after the ignition has been turned off, or until a door is
opened.

Volume/power control

Press the control to turn the audio
system on or off.
Turn the control to raise or lower
volume.
If the volume is set above a certain level and the ignition is turned off,
the volume will come back on at a "nominal" listening level when the
ignition switch is turned back on.
Speed sensitive volume (if equipped)
With this feature, radio volume changes automatically and slightly with
vehicle speed to compensate for road and wind noise.
The recommended level for speed sensitive volume is from level 1
through level 3. Level 0 turns the speed sensitive volume off and level 7
is the maximum setting.
26
VOL
PUSH ON
VOL
PUSH ON