See also:

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

Damage to safety belts
In the case of strain caused by accidents or damage: Have the safety belts, including the safety belt tensioners, replaced and have the belt anchors checked. Checking and replacing safety bel ...

Cameras
The objectives of the Top View cameras are located at the bottom of the exterior mirror housings. The image quality may be impaired by dirt. Clean the lens. ...