See also:

Snow chains
For safety reasons, Mercedes-Benz recommends that you only use snow chains which have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality. ...

Releasing the parking lock manually
In the event of an electrical malfunction, it is possible to release the selector lever lock manually to move it out of position P, e.g. if you wish to tow the vehicle away. Do not use any s ...

Displaying service messages
Switch on the ignition. Press or on the steering wheel to select the Serv. menu. Press or to select the ASSYST PLUS submenu and press to confirm. The service due date appears ...