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Controls in detail
Locking and unlocking
!
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.
Check the batteries in the
SmartKey ( page 96) and replace
them if necessary ( page 384).
Use the mechanical key to unlock
the driver's door ( page 379).
Have the vehicle batteries and their
connections checked.
Use the mechanical key to lock the
driver's door ( page 379).
If the SmartKey is malfunctioning,
contact an authorized
Mercedes-Benz Center.
96
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.
i
If battery check lamp 5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries ( page 384).
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.
Unlocking and opening the trunk lid
You can unlock and open the trunk sepa-
rately.
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
Press and hold button Š until trunk
unlocks and begins to open.
!
The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk lid opening/closing
system*: to stop the opening proce-
dure, press button Š on the
SmartKey. The trunk lid stops moving.
The trunk can also be opened from its
inside in an emergency, see "Trunk lid
emergency release" ( page 114).
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