Ford F-150 2000 Introduction Manual page 47

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.
With the radio on, press and hold
the volume control for five seconds,
then press:
to increase volume
compensation
to decrease or shut off the
volume compensation
AM/FM select
The AM/FM select control works in
radio, CD and CD changer modes (if
equipped).
AM/FM select in radio mode
This control allows you to select AM or FM frequency bands. Press the
control to switch between AM, FM1 or FM2 memory preset stations.
AM/FM select in CD or CD changer mode (if equipped)
Press this control to stop CD play and begin radio play.
Controls and features
VOL
PUSH ON
SEL
AM
FM
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