See also:

Winter Operation
Use of the air Recirculation mode during Winter months is not recommended because it may cause window fogging. ...

Operating Instructions — Radio Mode
NOTE: The ignition switch must be in the ON/RUN or ACC position to operate the radio. ...

SET/RND Button — To Set the Pushbutton Memory
When you are receiving a station that you wish to commit to pushbutton memory, press the SET/RND button. The symbol SET 1 will now show in the display window. Select the button (1–6) you wish ...