See also:

Temperature control dial
This dial regulates the temperature of airflow from the air outlets over a range from the blue side (cool) to red side (warm). ...

Tone and balance control
Type A and B audio Type C audio Each brief press of the sound control dial changes the control modes in the following sequence. Choose the desired level for each mode by turning the sound control ...

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. ...