See also:

Override feature for the rear side windows
WARNING When children ride on the vehicle's rear seats, activate the override switch. Otherwise, the children could be injured, e.g. by trapping themselves in the rear side window. - To act ...

Treadwear indicators
Narrow bars (tread wear bars) that are distributed over the tire tread. If the tire tread is level with the bars, the wear limit of 1/16 in (1.6 mm) has been reached. ...

Cleaning the headliner and carpets
  Headliner: use a soft brush or a cleaning agent recommended and approved by Mercedes-Benz to remove heavy soiling.   Carpets: use the carpet and textile cleaning agents recommended ...