See also:

Malfunction
A Check Control message is displayed. Adaptive light control is malfunctioning or has failed. Have the system checked as soon as possible. ...

Remove attached parts following 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. ...

Increasing or decreasing vehicle speed
Specify desired speed in the range from approx. 4 mph/6 km/h to approx. 15 mph/25 km/h using the rocker switch of the cruise control on the steering wheel. Vehicle speed can be changed by lightl ...