Mercedes-Benz S-Class - Manual (Page 343)

341
Practical hints
What to do if …?
Problem Possible cause Suggested solution
?
(USA only)
±
(Canada only)
The yellow engine malfunc-
tion indicator lamp comes
on while driving. 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. ̈ Check the fuel cap ( ୴ page 283).
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.
The yellow fuel tank reserve warning lamp
comes on while driving. The fuel level has gone below the reserve
mark. ̈ Refuel at the next gas station
(
୴ page 283).