Selecting the display
1. 
Press the button.
2. "Split screen"
3. Move the controller until the split screen is selected.
4. Press the controller or select "Split screen content".
5. Select the desired menu item.
See also:
The Inside
The X3's redesigned interior continues the sparse, minimalistic design
approach that BMW favors, but it does a better job of integrating the center
screen, which serves as the display for the stan ...
Continuing destination guidance
If the destination was not reached during the last
trip, destination guidance can be resumed.
"Resume guidance" ...
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. ...