326 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
ú
±(USA only)
(Canada only)
The yellow engine malfunction 
indicator lamp comes on while 
driving.Your fuel tank is empty.After refuelling start, turn off and 
restart the engine three or four times 
in succession. 
The limp-home mode is canceled. You do 
not need to have your vehicle checked.
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 (page 271).
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.