The concept

Indicator/warning lamps
The indicator and warning lamps can light up in a variety of combinations and colors.
Several of the lamps are checked for proper functioning when the engine is started or the ignition is switched on, and light up briefly.
See also:
Enabling DVD system
The DVD system can be enabled via iDrive.
1. "Settings"
2. "Allow rear control"
3. "Rear DVD system active"
Rear DVD system active ...
Number of safety belts
Your vehicle has been fitted with five safety belts
for the safety of you and your passengers. However,
they can only offer protection when adjusted
correctly. ...
Activating HDC
Press the button; the LED above
the button
lights up. ...
