See also:

Requirements
Via the Control Display, set a language that is also supported by the voice activation system so that the spoken commands can be identified. Set the language. ...

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. ...

Tachometer
Always avoid engine speeds in the red warning field. In this range, the fuel supply is interrupted to protect the engine. ...