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 also:
Problems with the SmartKey
Problem
Possible causes/consequences and
Solutions
You cannot lock or unlock the vehicle using
the SmartKey.
The SmartKey battery is discharged or nearly discharged.
...
LATCH-type (ISOFIX) child seat anchorsin the rear
WARNING
Children that are too large for a child restraint
must travel in seats using normal seat belts.
Position shoulder belt across the chest and
shoulder, not face or neck.
In orde ...
Important safety notes
Consult an authorized Mercedes-Benz Center
if you require information on approved and
recommended tires and wheels for summer
and winter operation. Advice on purchasing
and caring for tires is ...