See also:

Cleaning the steering wheel and gear or selector lever
Thoroughly wipe with a damp cloth or use leather care agents that have been recommended and approved by Mercedes- Benz. ...

Cleaning the wheels
WARNING Do not use power washers with circular-jet nozzles (dirt grinders) to clean your vehicle, in particular the tires. You could otherwise damage the tires and cause an accident. ...

The spray nozzles are misaligned
The windshield washer fluid from the spray nozzles no longer hits the center of the windshield. The spray nozzles are misaligned. - Have the spray nozzles adjusted at a qualified specialist wor ...