Switching the split screen on and off
1. 
Press the button.
2. "Split screen"
See also:
Brake system
Brakes require an initial break-in period of approx.
300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and discs. Drive moderately during this break-in
period. ...
Power failure
After a temporary power loss, some equipment
needs to be reinitialized.
Individual settings need to be reprogrammed:
▷ Seat, mirror, and steering wheel memory:
store the positions again.
...
Display in the instrument cluster
The selected speed is displayed
in the speedometer.
► Green: the system is actively
braking the vehicle.
► Orange: the system is on
standby. ...