Mercedes-Benz 2008 C-Class Operator's Manual page 407

Practical hints
What to do if ...?
Display
$
4
Gas Cap Loose
Reserve Fuel
Level
Y
406
Possible cause/consequence
You are driving with one or more doors
open.
The display symbol shows you which doors
are open.
A loss of pressure has been detected in the
fuel system. The fuel cap may not be closed
properly or the fuel system may be leaky.
The fuel level has gone below the reserve
mark.
You are driving with the hood open.
Possible solution
Close the doors.
Check the fuel cap ( page 322).
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked at an autho-
rized Mercedes-Benz Center.
Refuel at the next gas station ( page 322).
Stop your vehicle as soon as it is safe to do
so.
Close the hood ( page 326).
There is otherwise danger of an accident.