Mercedes-Benz 2005 E -Class Wagon Operator's Manual page 385

Practical hints
What to do if ...
Display symbol Display messages
%
Hood open
F
Key
Check battery
Key
not recognized
Key
not recognized
Key
still in vehicle
Keyless Go
Check system
384
Possible cause
You are driving with the hood open.
The SmartKey with KEYLESS-GO* batter-
ies are discharged.
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
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.
A SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.
The KEYLESS-GO* system is malfunction-
ing.
Possible solution
Close the hood ( page 299).
Change the batteries ( page 408).
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.
Change the position of the SmartKey
in the vehicle.
Operate the vehicle with the
SmartKey in the starter switch if nec-
essary.
Take the SmartKey out of the vehicle.
Visit an authorized Mercedes-Benz
Center as soon as possible.