Switching the split screen on and off
1. 
Press the button.
2. "Split screen"
See also:
Instrument cluster
1 Fuel gauge
2 Speedometer
3 Indicator/warning lamps
4 Tachometer
5 Engine oil temperature
6 External temperature
7 Electronic displays
8 Miles, trip miles
9 Clock
10 Reset miles ...
Audio playback
Selecting the track using the button
Press the button repeatedly
until the
desired track is played.
Selecting the track using the iDrive
Audio CDs
Select the desired track to begin playback. ...
Start/Stop button
Start/Stop button
Pressing the Start/Stop button switches the ignition
on or off and starts the engine.
The engine starts if the brake pedal is pressed
when you press the Start/Stop button. ...