See also:

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

Coolant temperature
Should the coolant, and with it the engine, become too hot, a Check Control message is displayed. Check the coolant level. ...

Deleting the button assignments
1. Press buttons 1 and 8 simultaneously for approx. five seconds. 2. "OK" ...