Mercedes-Benz 2003 C 240 4MATIC Operator's Manual page 86

Controls in detail
Locking and unlocking
!
If you can no longer lock or unlock the
vehicle with the key, then either the
batteries in the SmartKey are dis-
charged, the key is malfunctioning or
the vehicle battery is drained.
Check the batteries in the key
( page 86) and replace them if
necessary ( page 286).
Use the mechanical key to lock and
unlock the doors ( page 285) and
the trunk lid ( page 91) as re-
quired.
Check the vehicle battery
( page 303)
If the key is malfunctioning, contact an
authorized Mercedes-Benz Center.
86
Checking the batteries
Press button ‹ or Œ .
Battery check lamp 5 lights up briefly
to indicate that the key batteries are in
order.
!
If battery check lamp 5 does not light
up briefly during check, then the key
batteries are discharged.
Replace the batteries ( page 286).
You can obtain the required batteries
at any authorized Mercedes-Benz Cen-
ter.
Unlocking the trunk lid
You can unlock the trunk separately.
A minimum height clearance of 5.75 ft.
(1.75 m) is required to open the trunk lid.
Press button Š until trunk opens.
!
The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
The trunk can also be opened from its in-
side in an emergency, see "Trunk lid emer-
gency release" ( page 89).
i
If the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed ( page 89). The
turn signals will flash three times to
confirm locking.
If the trunk lid was previously
separately locked ( page 90), the
trunk lid will remain locked.