Mercedes-Benz 2006 S 350 Operator's Manual page 344

Problem
?
The yellow engine malfunc-
(USA only) tion indicator lamp comes
on while driving.
±
(Canada only)
The yellow fuel tank reserve warning lamp
comes on while driving.
Possible cause
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.
Practical hints
What to do if ...?
Suggested solution
Check the fuel cap ( page 284).
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.
Refuel at the next gas station
( page 284).
343