356 Practical hintsWhat to do if …Problem
Possible cause/consequence
Suggested solution
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 (USA only)
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 (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.
Your fuel tank is empty.
After refuelling 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.