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. ...

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. ...

When CD is in the player (type C)
When CD is in the player (type C) Each brief press of the “CD/AUX” button changes the modes in the following sequence. When the CD mode is selected, the player will start playback. ...