See also:

Hazard warning flashers
The button is located in the center console. ...

Close the windows and glasssunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...

Switching on/off
Press the button. On: the LED lights up. Off: the LED goes out. The system can issue warnings at speeds above approx. 40 mph/65 km/h. The state is stored for the remote control currentl ...