See also:

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

Saving a function
1. Highlight the function via the iDrive. 2. Press the desired button for more than 2 seconds. ...

Brake pedal feel
When the system brakes and you also depress the brake pedal, a somewhat different braking feel results. ...