Closing
Replace the fuel filler cap and
turn it
clockwise. The fuel filler cap audibly
engages.
Close the fuel filler flap.
If you drive with the fuel
filler cap open,
reserve fuel warning lamp 
flashes. In
addition, the 
Check Engine warning
lamp may light up. A message appears in
the multifunction display.
For further information on warning and
indicator lamps in the instrument cluster,
see.
Close the fuel filler flap
before locking the
vehicle. A locking pin otherwise prevents
the fuel filler flap from closing after the
vehicle has been locked.
See also:
Cleaning the steering wheel and gear or
selector lever
Thoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-Benz. ...
Center console
Center console
...
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 ...