See also:

Qualified specialist workshop
An authorized Mercedes-Benz Center is a qualified specialist workshop. It has the necessary specialist knowledge, tools and qualifications to correctly carry out the work required on your vehicle. ...

Cleaning the sensors
  Clean sensors 1 of the driving systems with water, car shampoo and a soft cloth. When cleaning the sensors with a power washer, maintain a distance between the vehicle and the nozzl ...

Inserting and removing DVDs
Proceed as described in the "Inserting and ejecting CDs and DVDs" section. ...