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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 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.
Unlocking and opening the trunk
You can unlock and open the trunk
separately.
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
̈ Press and hold button Š until trunk
unlocks and begins to open.
The trunk can also be opened from its in-
side in an emergency, see “Trunk emer-
gency release” (
୴ page 115).
!
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 99) and replace
them if necessary (
୴ page 435).
ț Use the mechanical key to unlock
the driver’s door (
୴ page 419) and
the trunk (
୴ page 420).
ț Use the mechanical key to lock the
driver’s door (
୴ page 420) and the
trunk (
୴ page 116).
ț Have the vehicle battery and the
battery connections checked
(
୴ page 453).
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.
Replace the batteries (
୴ page 435).
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.
!
The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk opening/closing
system*: To stop the opening proce-
dure, press button Š. The trunk lid
stops moving.
i
If the trunk does not open, it is still
locked separately (
୴ page 116).