See also:

The windshield wipers are obstructed
Leaves or snow, for example, may be obstructing the windshield wiper movement. The wiper motor has been deactivated. For safety reasons, you should remove the SmartKey from the ignition lock. ...

Vehicle data, GL 550
The data stated here refers specifically to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...

Important safety notes
Level control adapts the vehicle level automatically to the current operating and driving situation. This results in reduced fuel consumption and improved handling. For vehicles with ADS: when y ...