Mercedes-Benz CLS-Class 2008 Owners Manual - Manual (Page 350)

349
Practical hints
What to do if …
Problem Possible cause/consequence Suggested solution
ú
(USA only)
±
(Canada only)
The yellow engine malfunction
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.
If it is not closed properly:
̈ Close the fuel cap.
If it is closed properly:
̈ Have the fuel system checked by an
authorized Mercedes-Benz Center.