change key battery MERCEDES-BENZ C230 KOMPRESSOR COUPE 2002 CL203 Owner's Manual

33 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Locking and unlocking with remote control
Unlocking:
Press transmit button Œ. All turn signal lamps blink
once to indicate that the vehicle is unlocked.
The remote control can be programmed for two kinds of
unlocking modes (see below):
Selective unlocking mode –
Press transmit button Œonce to unlock driver’s door
and fuel filler flap.
Press transmit button Πtwice to unlock all doors,
fuel filler flap, and trunk.
Global unlocking mode –
Press transmit button Œonce to unlock all doors,
fuel filler flap, and trunk.
Notes:
The presently active unlocking mode (selective or
global) can only be determined by unlocking the vehicle
with the remote control (see below for changing mode).If within 40 seconds of unlocking with the remote
control, neither door or trunk is opened, the electronic
key is not inserted in the starter switch, or the central
locking switch is not activated, the vehicle will
automatically lock.
Locking:
Press transmit button ‹ once. All turn signal lamps
blink three times to indicate that the vehicle is locked. If
they do not blink three times, a door or trunk is not
properly closed.
Note:
If the vehicle cannot be locked or unlocked by pressing
the transmit button, then it may be necessary to change
the batteries in the electronic key (if ok, battery check
lamp in electronic key will light briefly when pressing
transmit button) or to synchronize the remote control,
see pages 351 and 353.
Choosing global or selective mode on remote control
Press and hold transmit buttons‹ andŒ
simultaneously for five seconds to reprogram the
remote control. Battery check lamp will blink two times
indicating the completed mode change.

34 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Opening and closing windows and
panorama sliding / pop-up roof from outside
(summer opening / convenience feature)
Aim transmitter eye of remote control at the door
receiver.
Summer opening:
The panorama sliding / pop-up roof and all side windows
can be opened automatically.
Continue to press transmit button Πafter unlocking
the vehicle.
The windows and panorama sliding / pop-up roof begin
to open after a short time.
To interrupt opening procedure, release transmit
button.
Convenience feature:
The panorama sliding / pop-up roof and the side
windows can be closed.
Continue to press transmit button ‹ after locking
the vehicle.
The windows and panorama sliding / pop-up roof begin
to close after approximately 1 second.To interrupt closing procedure, release transmit button.
Ensure that all side windows and the panorama
sliding / pop-up roof are properly closed before leaving
the vehicle.
Note:
If the windows and panorama sliding / pop-up roof
cannot be operated automatically by pressing the
transmit button of the remote control then it may be
necessary to change the batteries in the electronic key
(if ok, battery check lamp in electronic key will light
briefly when transmitting), or to synchronize the
remote control, see page 351 and 353.
Wa r n i n g !
Never operate the windows or panorama sliding /
pop-up roof if there is the possibility of anyone
being harmed by the opening or closing procedure.In case the procedure causes potential danger, the
procedure can be immediately halted by releasing
the remote control button. To reverse direction of
movement press Œ for opening or ‹ for
closing.

351 Electronic main key
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Changing batteries in the electronic key
1Transmit buttons
2Lamp for battery check and function control
Checking batteries
If one of the transmit buttons (1) is pressed, the battery
check lamp (2) lights up briefly – indicating that the
batteries are in order.
Change batteries if the battery check lamp (2) does not
light up briefly.Changing batteries
Move locking tab (3) in direction of right arrow and
remove mechanical key (4, left arrow).
P80.20-2200-26
1
2
P80.35-2028-26
4
3

352 Electronic main key
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Insert mechanical key (4) in side opening (5) to open
latch. Press briefly (do not use mechanical key as lever)
to release battery compartment.
Remove mechanical key from side opening.
Carefully remove battery compartment in direction of
arrow (6).Change batteries (7), inserting new ones under contact
spring (8) with plus (+) side facing up.
Return battery compartment into housing until locked
in place and slide mechanical key back into electronic
key.
P80.35-2026-26
5
4
6
P80.35-2027-26
78

386 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
BBabySmart
TM airbag deactivation system..................... 69
Battery ............................................................................. 336
Block heater .................................................................... 266
Brake assist system (BAS) ............................................ 271
Bulbs
See Replacing bulbs ................................................. 345
CCD changer installed ..................................................... 187
Cellular telephone ......................................................... 219
Center console .................................................................. 24
Central locking switch .................................................... 38
Central locking system ................................................... 31
Automatic central locking ......................................... 40
Central locking switch ............................................... 38
Choosing global or selective mode........................... 33
Doors ............................................................................. 36
General notes............................................................... 30
Locking and unlocking with remote control .......... 33
Mechanical keys .......................................................... 35
Obtaining replacement keys ..................................... 29
Summer opening/convenience feature ................... 34Vehicle keys ................................................................. 28
Changing wheels........................................................... 327
Inflating the collapsible spare tire ........................ 333
Storing spare wheel in wheel well ........................ 334
Check regularly and before a long trip...................... 280
Child seat
See Infant and child restraint systems .................... 82
Climate control ............................................................... 152
Adjustable air outlets, rear passenger
compartment ......................................................... 172
Air recirculation ........................................................ 158
Basic setting............................................................... 156
Defrosting ................................................................... 157
Display and controls ................................................. 154
Dust filter.................................................................... 155
Economy mode .......................................................... 159
Front center console storage compartment
ventilation ............................................................. 171
Residual engine heat utilization ............................. 159
Special settings ......................................................... 156
Windows fogged up on the inside .......................... 157
Windows fogged up on the outside ................ 157, 166
COMAND, radio and telephone................................... 226
Combination switch ....................................................... 148
Control and operation of radio transmitters ............. 226
Coolant level ................................................................... 319