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Controls in detail
Locking and unlocking
Global locking
̈ Press button ‹.
With the hood, trunk and both doors
closed, all turn signal lamps flash three
times. The locking knobs in the doors
move down. The anti-theft alarm sys-
tem is armed.
Restoring to factory setting
̈ Press and hold buttons Œ and ‹
simultaneously for about six seconds
until battery check lamp 5 flashes
twice.
Checking the batteries
̈ Press button ‹ or Œ.
Battery check lamp 5 comes on
briefly to indicate that the SmartKey
batteries are in order.
!
If you can no longer lock or unlock the
vehicle with the SmartKey, then the
batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.
ț Check the batteries in the
SmartKey (
୴ page 97) and replace
them if necessary (
୴ page 412).
ț Use the mechanical key to unlock
the driver’s door (
୴ page 397) and
the trunk (
୴ page 398).
ț Have the vehicle battery and the
battery connections checked
(
୴ page 427).
ț Use the mechanical key to lock the
driver’s door (
୴ page 398).
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
i
If battery check lamp 5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
୴ page 412).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
i
If the batteries are checked within
signal range of the vehicle, pressing
the ‹ or Œ button will lock or
unlock the vehicle accordingly.