1996 Ford Explorer Owner's Manual - Page 209

Electronic Sound Systems Luxury Audio System Using the Controls on Your New Radio How to turn the radio on and off Press the "VOL/PUSH ON" knob to turn the radio on. Press again to turn it off. How to adjust the volume Turn the "VOL/PUSH ON" knob clockwise to increase the volume and counterclockwise to decrease the volume. NOTE: If the volume level is set above a certain listening level when the ignition switch is turned off, when the ignition switch is turned back on, the volume will come back to a "nominal" listening level. However, if the radio power is turned off (with the "VOL/PUSH ON" button) and the volume is at a low level, the volume will remain in the position it was set at when radio power is switched back on. Selecting the AM or FM frequency band Push the "AM/FM" button to select the desired frequency band. Pushing the "AM/FM" button causes the frequency band to switch from "AM" to "FM1" to "FM2" to "AM", changing one band to the next each time the button is pressed. These functions are used with the station memory buttons described under How to tune radio stations. 209