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Controls in detail
Locking and unlocking
system, the vehicle cannot be locked
or the engine started via the KEY-
LESS-GO system.
ț If the SmartKey with KEYLESS-GO is re-
moved from the vehicle while the igni-
tion is switched on (e.g. if passenger
exits the vehicle with the key), the mes-
sage
Key not recognized!
will appear
in the multifunction display.
Find the key or change its present loca-
tion immediately (e.g. place it on the
front passenger seat or insert it in shirt
pocket).
ț Remember that the engine can be
started by anyone with a SmartKey
with KEYLESS-GO that is left inside the
vehicle. If you leave the card behind
when exiting and locking the vehicle,
the message
Key recognized in vehi-
cle!
will appear in the multifunction
display.
Factory setting
Global unlocking
̈ Grasp the door handle.
The vehicle will lock again automatically
within approximately 40 seconds if neither
door nor trunk is opened.
Global locking
̈ Press lock button at door handle
(
୴ page 53) or trunk lid (୴ page 92).
i
The vehicle could be inadvertently un-
locked if the SmartKey with KEY-
LESS-GO is within 3 ft. (1 m) of the
vehicle and
ț the door handle is splashed with
water, or
ț you attempt to clean the door
handle.
!
If you cannot lock or unlock the vehicle
with the SmartKey with KEYLESS-GO,
then either the batteries of the key are
discharged or the key is malfunction-
ing.
ț Check the batteries of the Smart-
Key with KEYLESS-GO (
୴ page 88)
and replace them if necessary
(
୴ page 328).
ț Use the mechanical key to unlock
the driver’s door (
୴ page 327) and
trunk lid (
୴ page 328) as required.
Lock the vehicle using the mechan-
ical key (
୴ page 328).
If your SmartKey with KEYLESS-GO is
malfunctioning, contact your autho-
rized Mercedes-Benz Center.