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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 84) and replace
them if necessary ( page 307).
or
Use the mechanical key to unlock
the doors ( page 305) and the
trunk lid ( page 306) as required.
or
Use the mechanical key to lock the
doors ( page 306) and the trunk
lid ( page 306) as required.
or
Have the vehicle battery and the
battery connections checked.
84
If the SmartKey is malfunctioning,
contact an authorized Mercedes-Benz
Center.
Checking the batteries
Press button ‹ or Œ.
Battery check lamp 5 comes on
briefly to indicate that the SmartKey
batteries are in order.
!
If battery check lamp 5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries ( page 307).
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.
Unlocking and opening the trunk lid
You can unlock and open the trunk
separately.
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
Press button Š until trunk unlocks
and begins to open.
!
The trunk lid swings open upwards
automatically. Always make sure there
is sufficient overhead clearance.
The trunk can also be opened from its
inside in an emergency, see "Trunk lid
emergency release" ( page 88).
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