See also:

Centrally locking and unlocking thevehicle from the inside
You can centrally lock or unlock the vehicle from the inside. The central locking/unlocking button does not lock or unlock the fuel filler flap. The buttons are located on both front doors. ...

General notes
When you lock the vehicle, you can simultaneously: close the side windows close the panorama roof with power tilt/ sliding panel On vehicles with a panorama roof with power tilt/sliding panel ...

Adjusting the head restraints manually
Adjusting the head restraint height The head restraints must only be removed at a qualified specialist workshop. Mercedes-Benz recommends that you use a Mercedes-Benz Center for this purpose. ...