Closing
•► Replace the fuel filler cap and turn it clockwise. The fuel filler cap audibly engages.
•► Press the fuel filler flap closed until it engages audibly.
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
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:
Driving with summer tires
Observe the notes in the "Winter operation"
section. ...
Working on the vehicle
WARNING
When working on the vehicle, engage the
electronic parking brake and shift the
automatic transmission into park position P.
Otherwise the vehicle could roll away which
could result ...
Automatic emergency braking when a collision is imminent
The well-proven, radar based assistance systems from the S-Class are now also
optionally available to Mercedes-Benz E-Class customers. A further development
of the long-range radar sensor now has ...