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Practical hints
Bleeding the fuel system (Diesel engine only)
Allowing the vehicle to be driven until the
fuel tank is empty is not recommended. If
this occurs, air may be pulled into the fuel
system. If this happens, the ? malfunc-
tion indicator lamp (USA only) or the
± malfunction indicator lamp (Canada
only) comes and it may be possible that
the engine will not start immediately after
you refuel the vehicle.
After refueling:
̈ Turn the SmartKey in the starter switch
to position 2 for at least 30 seconds.
̈ Return the SmartKey in the starter
switch to position 0.
̈ Turn the SmartKey in the starter switch
to position 3 and hold it there for up to
60 seconds, i.e. until the engine is run-
ning surge-free.
If the engine does not start:
̈ Try to start the engine again without in-
terruption for a maximum of 60 sec-
onds until it is running smoothly.
If the engine still does not start even after
this attempt, do not make any further at-
tempts to start the engine. Contact an
authorized Mercedes-Benz Center.
i
Where the ? malfunction indicator
lamp (USA only) or the ± malfunc-
tion indicator lamp (Canada only) in the
instrument cluster has been illuminat-
ed for the above condition, it will re-
main illuminated until the engine was
cycled on and off four times in a row.