See also:

Lubrication oil circulation in the refrigerant circuit
Operate the air conditioner compressor at a low engine speed (at idle or low driving speeds) a few minutes each month during the off-season to circulate its oil. ...

AUTO button
FULL AUTO mode operation: When the “AUTO” button is pressed, the indicator light “FULL AUTO” on the display illuminates. In this state, fan speed, airflow distribution, air-inlet control, and a ...

SCAN (only when connecting USB storage device)
Scan is operated in the same way a CD is played. For details, refer to “Scan (type A, B and C audio)”. NOTE When an iPod® is connected, you cannot select the SCAN mode. ...