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You can also lock the vehicle using the out-
side door handle ( page 309) or, vehicles with
trunk opening/closing system*, KEYLESS-GO
locking/closing switch ( page 440).
Checking batteries in the SmartKey or
SmartKey with KEYLESS-GO
!
If you cannot lock or unlock the vehicle with
the SmartKey or SmartKey with KEYLESS-GO,
then either the batteries in the SmartKey or
SmartKey with KEYLESS-GO are discharged, the
SmartKey or SmartKey with KEYLESS-GO is mal-
functioning or the vehicle batteries are drained.
Check the batteries in the SmartKey or
SmartKey with KEYLESS-GO and replace it
them necessary ( page 619).
Use the mechanical key to unlock the driv-
er's door ( page 614) and trunk
( page 615).
Have the vehicle batteries and their connec-
tions checked ( page 634).
If the SmartKey or SmartKey with KEYLESS-GO
is malfunctioning, contact an authorized
Mercedes-Benz Center.
Press button ‹ or Œ.
The battery check lamp ( page 304)
( page 306) comes on briefly to indi-
cate that the SmartKey or SmartKey
with KEYLESS-GO batteries are in or-
der.
!
If the battery check lamp does not come on
briefly during check, the SmartKey or SmartKey
with KEYLESS-GO batteries are discharged.
Replace the batteries ( page 619).
You can obtain the required batteries at any au-
thorized Mercedes-Benz Center.
i
If the batteries are checked within signal
range of the vehicle, pressing button ‹ or
Πwill lock or unlock the vehicle accordingly.
Controls in detail
Locking and unlocking
Loss of the SmartKey or SmartKey with
KEYLESS-GO
If you lose your SmartKey, SmartKey with
KEYLESS-GO or mechanical key, you
should do the following:
Have the SmartKey or SmartKey with
KEYLESS-GO deactivated by an autho-
rized Mercedes-Benz Center.
Report the loss of the SmartKey,
SmartKey with KEYLESS-GO or the me-
chanical key immediately to your car
insurance company.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
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