See also:

Malfunction
A Check Control message is displayed. On the Control Display, the areas in front of and behind the vehicle are shaded. PDC has failed. Have the system checked. To ensure full operability: ...

BMW Assist or ConnectedDrive
...

Buttons on the remote control
1 Unlocking 2 Locking 3 Opening the trunk lid 4 Panic mode*, headlamp courtesy delay feature ...