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109
Controls in detail
Locking and unlocking
Checking the batteries
̈ Press button ‹ or Œ.
Battery check lamp 5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.
Global locking using the lock button at
trunk lid
1 Lock button
!
If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the batteries in the
SmartKey are discharged, the
SmartKey with KEYLESS-GO is mal-
functioning or the vehicle battery is
drained.
ț Check the batteries in the
SmartKey with KEYLESS-GO
(
୴ page 109) and replace them if
necessary (
୴ page 408).
ț Use the mechanical key to unlock
the driver’s door (
୴ page 402) and
the trunk (
୴ page 121).
ț Use the mechanical key to lock the
driver’s door (
୴ page 402) and the
trunk (
୴ page 121).
ț Have the vehicle battery checked
by an authorized Mercedes-Benz
Center.
If the SmartKey with KEYLESS-GO is
malfunctioning, contact an authorized
Mercedes-Benz Center.
!
If battery check lamp 5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
୴ page 408).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
i
If the batteries are checked within sig-
nal range of the vehicle, pressing the
button ‹ or Œ will lock or unlock
the vehicle accordingly.
i
To prevent a possible inadvertent lock-
out, the trunk will open automatically if
a SmartKey with KEYLESS-GO is recog-
nized inside the vehicle or in the trunk.