See also:

Maximum cooling
Press the button. The system is set to the lowest temperature, maximum air volume and recirculatedair mode. Air flows out of the vents for the upper body region. Open them for this purpose. A ...

Vehicle information
Owner's Manual Computer Vehicle ...

Deactivating HDC
Press the button again and the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...