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:
Centrally locking and unlocking thevehicle from the inside
You can centrally lock or unlock the vehicle
from the inside.
The central locking/unlocking button does
not lock or unlock the fuel filler flap.
The buttons are located on both front doors.
...
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 ...
Purity
Assuring the purity of DEF is particularly
important with respect to avoiding
malfunctions in the exhaust gas
aftertreatment system.
If DEF is pumped out of the DEF tank, e.g.
during repair wo ...