See also:

Switching the system on/off
Switching off At the lowest fan speed, press the left side of the button on the driver's side. Switching on Press any button. ...

AUTO program
Press the button. Air volume, air distribution, and temperature are controlled automatically: Depending on the selected temperature, AUTO intensity, and outside influences, the air is directed ...

Malfunction
A message is displayed in the instrument cluster. HDC is not available, e.g., due to elevated brake temperatures. ...