See also:

Switching on/off directly
1. "Settings" 2. "Climate" 3. "Activate parked-car vent." The symbol on the automatic climate control flashes if the system is switched on. ...

Functional readiness of the airbag system
When the ignition is switch on, the warning lamp in the instrument cluster lights up briefly and thereby indicates the operational readiness of the entire airbag system and the belt tension ...

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