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102
Controls in detail
Locking and unlocking
Global locking
̈ Press button ‹.
ț All turn signal lamps flash three
times.
ț An acoustic signal sounds three
times (if equipped and feature acti-
vated).
ț The locking knobs in the doors
move down.
ț The anti-theft alarm system is
armed.
Restoring to factory setting
̈ Press and hold buttons Œ and ‹
simultaneously for about 6 seconds un-
til battery check lamp 5 flashes twice.
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.
!
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 (
୴ page 102) and re-
place 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 batteries and their
connections checked.
If the SmartKey is malfunctioning, con-
tact 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 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.