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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 brief-
ly to indicate that the SmartKey batter-
ies are in order.
Unlocking and opening the trunk
You can unlock and open the trunk sepa-
rately.
A minimum height clearance of 6.3 ft
(1.90 m) is required to open the trunk lid.
̈ Press and hold button Š until trunk
unlocks and begins to open.
!
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 nec-
essary (
୴ page 376).
ț Use the mechanical key to unlock
the driver’s door (
୴ page 372) and
the trunk (
୴ page 373).
ț Use the mechanical key to lock the
driver’s door (
୴ page 372).
ț Have the vehicle battery and the
battery connections checked
(
୴ page 391).
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz
Center.
!
If battery check lamp 5 does not
comes on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
୴ page 376).
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.
!
The trunk lid swings open upwards au-
tomatically. Always make sure that
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.