Mercedes-Benz 2008 S550 Operator's Manual page 604

Problem
±
The yellow engine malfunc-
tion indicator lamp comes
on while driving.
Possible cause/consequence
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.
Your fuel tank is empty.
Practical hints
What to do if ...?
Suggested solution
Check the fuel cap.
If it is not closed properly:
Close the fuel cap.
If it is closed properly:
Have the fuel system checked by an au-
thorized Mercedes-Benz Center.
After refueling, start, turn off, and re-
start the engine three or four times in
succession.
The limp-home mode is canceled. You do
not need to have your vehicle checked.
603