Fuel filler flap
The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or using KEYLESS-GO.
The position of the fuel filler cap is displayed
in the instrument cluster 
. The
arrow
next to the filling pump indicates the side of
the vehicle.
1 To open the fuel filler flap
2 To insert the fuel filler cap
3 Tire pressure table
4 Fuel type
See also:
2010 Mercedes-Benz E-Class Review by Bill Jackson
Some people think a German luxury sedan should be fast, handle harshly and
just generally be a big race car. I don't. I think a German luxury sedan should
make you feel bad for not dressing up to ...
Restoring the factory settings
Press the and
buttons simultaneously for approximately
six seconds until the battery check lamp flashes twice.
...
Vehicle
Activating/deactivating the automatic door locking feature
If you select the Automatic Door Lock: function, the vehicle is centrally locked
above a speed of around 9 mph (15 km/h).
For further ...