To adjust the volume

See also:

Ventilation slots
The ventilation slots in front of the windscreen should be brushed clear after a heavy snowfall so that the operation of the heating and ventilation systems will not be impaired. ...

Rheostat (meter illumination control)
The rheostat can be adjusted while the lamp switch is “” or “”. Turn the dial to adjust the meter illumination to the desired brightness. 1- To increase brightness 2- To reduce brightne ...

During a long period of disuse
The air conditioning should be operated for at least five minutes each week, even in cold weather. This is to prevent poor lubrication of the compressor internal parts, and to maintain the air con ...