BMW 5 Series: Close the windows and glass 
sunroof - Saving fuel - Driving tips - BMW 5 Series Owners ManualsBMW 5 Series: Close the windows and glass sunroof

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

    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. ...

    Check the tire inflation pressure regularly
    Check and, if necessary, correct the tire inflation pressure at least twice a month and before starting on a long trip. Low tire inflation pressure increases rolling resistance and thus raises ...

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    Replacement method
    Remove the air conditioning filter and replace it with a new one. The “↑UP” marks shown on the filter should be pointing up. ...

    Seat belt reminder
    Seat belt reminder light in ceiling console The seat belt reminder consists of an audible signal, an indicator light near the rearview mirror and a symbol in the instrument panel that alert all o ...

    Summary
    The camera is activated when the gear selector is moved to R (this can be changed in the MY CAR menu) and the image is shown on the center console display. When backing up, two solid lines are ...