See also:

Restoring the factory settings
Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...

Important safety notes
WARNING   Severe conditions (e.g. strong air pollution) may require replacement of the filter before its scheduled replacement interval. A clogged filter will reduce the air volume to t ...

Smaller tank, same range
Because the new Mercedes CLS models consume significantly less fuel, it has been possible to reduce the filling volume of the fuel tank in the four and six-cylinder models to 59 litres. The 80-lit ...