See also:

Opening/closing the glass sunroof
When the sliding visor is open, proceed as described under Sliding visor. ...

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

Car care products
BMW recommends using cleaning and care products from BMW, since these have been tested and approved. Car care and cleaning products Follow the instructions on the container. When cleaning the ...