See also:

Switching off automatically
The system switches off and the LED goes out: After approx. 33 ft/10 m when driving forward. Above approx. 9 mph/15 km/h when driving forward. Switch on the system again if necessary. ...

Speed limit
Display of a speed limit which, when reached, should cause a warning to be issued. The warning is repeated if the vehicle speed drops below the set speed limit once by at least 3 mph/5 km/h. Di ...

Remove attached partsfollowing use
Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...