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:
Sliding sunroof
Important safety notes
WARNING
When opening or closing the sliding sunroof,
make sure that there is no danger of anyone
being harmed by the opening/closing
procedure.
The sliding sun ...
Safety & Features
The S-Class has not been crash-tested by the Insurance Institute for Highway
Safety. Standard safety features include eight airbags, an electronic stability
system and antilock brakes. Click here ...
Warning and indicator lamps
Warning and indicator lamps
...