Audi Q5   Controls   Heating and cooling  3-zone deluxe automatic air conditioner
The windscreen and side windows are defrosted or demisted as quickly as possible.
To switch on, press the button.
To switch off, press the button again, or press the AUTO button.
The temperature is regulated automatically. The air output is increased to maximum and most of the air comes out of the outlets below the windscreen.
The air recirculation mode is switched off when the button is pressed.