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Left display
Right display
F
Key
not detected
Key
still
in vehicle
.
3rd brake lamp
Brake lamp
Left
Auxiliary
lamp on!
Possible cause
The SmartKey with KEYLESS-GO* is
not recognized while the engine is
running because
the SmartKey with
KEYLESS-GO* is not in the vehi-
cle
there is strong radio-frequency
interference
The SmartKey with KEYLESS-GO* is
momentarily not recognized.
A SmartKey with KEYLESS-GO* left
in the vehicle was recognized while
locking the vehicle from the out-
side.
The high mounted brake lamp is
malfunctioning.
The left brake lamp is malfunction-
ing. An auxiliary lamp has been
brought into use.
Practical hints
What to do if ...
Possible solution
Stop the vehicle as soon as it is safe to do so.
Search for the SmartKey with KEYLESS-GO*
or continue to operate the vehicle with the
SmartKey.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again af-
ter the engine is stopped.
Change the position of the SmartKey with
KEYLESS-GO* in the vehicle.
Operate the vehicle with the SmartKey if
necessary.
Take the SmartKey with KEYLESS-GO* out of
the vehicle.
Visit an authorized Mercedes-Benz Center as
soon as possible.
Visit an authorized Mercedes-Benz Center as
soon as possible.
359
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