335 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
A 
Reserve fuel
The fuel level has dropped below the re-
serve mark.
Refuel at the next gas station 
(page 278).
Y
Hood open!
You are driving with the hood open.
Close the hood (
page 281).
F
Key
Check battery!
The SmartKey with KEYLESS-GO* batter-
ies are discharged.
Change the batteries (
page 355).
Key
not recognized!
The SmartKey with KEYLESS-GO* is not 
recognized while the engine is running 
because
the SmartKey with KEYLESS-GO* is 
not in the vehicle
there is strong radio-frequency inter-
ference
Stop the vehicle as soon as it is safe 
to do so.
Search for the SmartKey.
Otherwise the vehicle cannot be cen-
trally locked nor can the engine be 
started again after the engine is 
stopped.
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.
Change the position of the SmartKey 
in the vehicle.
Operate the vehicle with the Smart-
Key in the starter switch if necessary.