Switching the split screen on and off
1. 
Press the button.
2. "Split screen"
See also:
Close the windows and glasssunroof
Driving with the glass sunroof and windows
open results in increased air resistance and
raises fuel consumption. ...
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle,
e ...
BMW EfficientDynamics: More power, less fuel consumption
With high-performance engines, superior suspension technology and an
extremely torsion-resistant body, the new BMW 3-Series is building on its
position as the sportiest sedan in its segment. It is ...