See also:

Malfunction
A message is displayed in the instrument cluster. HDC is not available, e.g., due to elevated brake temperatures. ...

Operational readiness of airbag system
Operational readiness of airbag system In the radio ready state and beyond the warning lamp comes on briefly to indicate that the entire airbag system and the belt tensioners are operational. ...

Configuring the warning time
After the warning function is switched on, the warning time can be set via the iDrive. For a late warning time, prewarning is deactivated. These settings have no effect on the time of the warni ...