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Controls in detail
Locking and unlocking
Global locking
̈ Press button ‹.
With the hood, trunk and all 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 4 flashes
twice.
Checking the batteries
̈ Press button ‹ or Œ.
Battery check lamp 4 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.
!
If you can no longer lock or unlock the
vehicle with the SmartKey, then either
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 and replace them if
necessary (
୴ page 383).
ț Use the mechanical key to unlock
the driver’s door (
୴ page 377).
ț Use the mechanical key to lock the
driver’s door (
୴ page 379).
ț Have the vehicle battery and the
battery connections checked
(
୴ page 401).
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
i
If battery check lamp 4 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
୴ page 383).
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 ‹ or Œ button will lock or
unlock the vehicle accordingly.