See also:

Initialization after a power failure
After a power failure, it is only possible to raise the roof, if necessary. Have the system initialized by your service center. ...

Adjusting the height: manual head restraints
The height of the outer head restraints can be adjusted. To raise: pull. To lower: press the button, arrow 1, and push the head restraint down. ...

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