1999 Ford F150 Owner Guide 1st Printing - Page 34

Controls and features Volume/power control Press the control to turn the audio system on or off. VOL PUSH ON Turn the control to raise or lower volume. VOL PUSH ON 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, until the display reads SPEED VOL VOL#, then press: PUSH ON 34