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Controls in detail
Locking and unlocking
Restoring to factory setting
̈ Press and hold buttons Œ and ‹
simultaneously for about 6 seconds un-
til battery check lamp 5 (
୴ page 96)
flashes twice.
Checking the batteries
̈ Press button ‹ or Œ.
Battery check lamp 5 (
୴ page 96)
comes on briefly to indicate that the
SmartKey batteries are in order.
Unlocking and opening the trunk
You can unlock the trunk separately.
A minimum height clearance of
5.5 ft (1.65 m) is required to open the
trunk lid.
̈ Press and hold button Š until the
trunk lid unlocks and opens slightly.
Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
̈ Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
̈ Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
̈ If necessary, have the trunk lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
!
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 99) and replace
them if necessary (
୴ page 346).
ț Use the mechanical key to unlock
the vehicle (
୴ page 344).
ț Have the vehicle battery and the
battery connections checked. Con-
tact an authorized Mercedes-Benz
Center.
If the SmartKey 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.
ț Replace the batteries (୴ page 346).
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
button ‹ or Œ will lock or unlock
the vehicle accordingly.