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Practical hints
What to do if ...
Display symbol Display messages
A
Reserve fuel
Gas cap is open
»
Replace air cleaner
F
Remove key
F
Get a new key
F
Key
still in vehicle
378
Possible cause/consequence
The fuel level has dropped below the re-
serve mark.
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.
The air cleaner is clogged.
You have forgotten to remove the
SmartKey.
The SmartKey is malfunctioning.
A SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.
Possible solution
Refuel at the next gas station
( page 283).
Check the fuel cap ( page 283).
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.
Have the air cleaner checked by an
authorized Mercedes-Benz Center.
Remove the SmartKey from the start-
er switch.
Contact an authorized
Mercedes-Benz Center.
Take the SmartKey with
KEYLESS-GO* out of the vehicle.
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