buttons MERCEDES-BENZ C320 2001 W203 Owner's Manual

25 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Central locking system
Radio frequency and infrared remote control
The electronic main key has an integrated radio
frequency and infrared remote control.
Due to the extended operational range of the remote
control, it could be possible to unintentionally lock or
unlock the vehicle by pressing the transmit button. If
one of the transmit buttons is pressed, the battery check
lamp lights up brief ly – indicating that the batteries are
in order. See page 332 for checking batteries.
The vehicle doors, trunk and fuel filler flap can be
centrally locked and unlocked via remote control.
Opening and closing the windows and sliding/pop-up
roof can only be done with the infrared portion of the
remote control. Aim transmitter eye at a receiver (6
or 7), press and hold transmit button Œ or ‹,
seepage29.
With vehicle centrally locked, the trunk can also be
opened by using the remote control.
If the electronic key is inserted in starter switch, the
vehicle cannot be locked or unlocked, and the trunk lid
cannot be opened with the remote control.1Transmit button
‹ Locking
ΠUnlocking
Š Opening trunk (if not separately locked)
2Lamp for battery check (see page 332 for changing
batteries if it does not light up briefly)
3PANIC button
4Transmitter eye
5Locking tab for mechanical key
P80.35-2032-26
24
3
5
1

27 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 Œ once 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 Πonce to unlock all doors,
fuel filler flap, and trunk.
Notes:
If the trunk was previously locked separately, it will
remain locked, see page 35.
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 main key (if ok, battery
check lamp in electronic main key will light briefly
when pressing transmit button) or to synchronize the
remote control, see pages 332 and 334.
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.

28 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Opening the trunk
The trunk lid will swing open automatically. You should
always make sure there is sufficient clearance.
A minimum height clearance of 5.75 ft. (1.75 m) is
required to open the trunk lid.
Press transmit buttonŠ until trunk lid is open.Important!
Do not place remote control in trunk since trunk is
locked when the lid is closed if the vehicle is centrally
locked.
Notes:
If the trunk was previously locked separately, it will
remain locked, see page 35.

32 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
If the vehicle has previously been locked from the
outside, opening a door from the inside will trigger the
alarm. When opening a front door while the central
locking system is in the:
•selective unlocking mode, only that individual door
is unlocked. The remaining doors, the trunk and
fuel filler flap remain locked.
•global unlocking mode, all doors, the trunk and fuel
filler flap are unlocked.
Notes:
In case of a malfunction in the central locking system
the doors can be locked and unlocked individually.
To lock, push down lock buttons or turn mechanical key
in driver’s door lock to position 3. In addition lock the
trunk.To unlock, pull inside door handles or turn mechanical
key in driver’s door lock to position 2.
Rear doors can only be opened from inside by first
pulling up the door lock button.
When unlocking the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To cancel the alarm, insert the electronic key in the
starter switch or press buttonŒ or‹ on the
electronic main key.

81 Rear view mirrors
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Exterior rear view mirrors
The buttons are located above the exterior lamp switch.
The memory button (4) is located on the driver’s door.Exterior mirror adjustment
Turn the electronic key in starter switch to position 1
or 2.
Push button to select mirror to be adjusted:
Driver’s side – Push button (1).
Passenger side – Push button (2).
Push the adjustment button (3) up, down, left or right
according to the setting desired.
Notes:
The exterior rear view mirrors have electrically heated
glass. The heater switches on automatically, depending
on outside temperature.
If an exterior mirror housing is forcibly pivoted from its
normal position, it must be repositioned by applying
firm pressure until it snaps into place.
Storing mirror positions in memory
The exterior rear view mirror positions are stored in
memory with the seat / steering wheel adjustment and
can be recalled when necessary. See page 85 for notes
on the memory function.
Wa r n i n g !
Exercise care when using the passenger side
exterior mirror. The mirror surface is convex
(outwardly curved surface for a wider field of
view). Objects in mirror are closer than they
appear. Check your inside rear view mirror or
glance over your shoulder before changing lanes.
0
PAuto

85 Memory function
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Memory function
The memory and stored position buttons are located on
the doors.
1Memory button, used to store selected positions
which can be retrieved by pressing
2Stored position button
Turn to position “1”, “2”, or “3”Together with the driver’s seat position you can store
the positions for steering wheel and exterior rear view
mirrors.
For the front passenger you can store the seat position.
Three stored positions for the driver’s seat are available
for each of the two electronic main keys.

93 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Depending on your vehicle’s equipment, you may use
the buttons on the multifunction steering wheel to call
up, control and set the following systems in the
multifunction display:
1Trip odometer and main odometer, see page 91 and
page 96
Flexible service system (FSS), see page 125
Vehicle speed, see page 96
Coolant temperature gauge, see page 124
Engine oil level indicator, see page 128
2Audio systems, see page 98
Radio, see page 98
CD player, see page 99
Cassette player, see page 1003Navigation system, see page 106
4Malfunction message memory, see page 109
5Individual settings, see page 111
6Trip computer, see page 107
After start
After reset
Fuel tank content
7Telephone, see page 101
Press the è or ÿ button repeatedly until the
required system is displayed.
The display advances by one system each time the
button is pressed.
You may call up add ition al d is plays wit hin som e of t hes e
categories by pressing the j or k button.

143 Climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Defrosting
Press the P button. The indicator lamp in the button
illuminates.
Switch off air recirculation, if selected. Press
buttonO, the indicator lamp in the button will go
out.
Close center air outlets.
Turn wheels (8, page 138) up to open left and right side
air outlets (9, page 138). Adjust side air outlets upward.
Pressing the switch again returns the system to the
previous setting.Windows fogged up on the inside
Switch off the economy mode, if selected. Press
buttonS. The indicator lamp in the button will go
out.
Switch off air recirculation, if selected. Press
buttonO. The indicator lamp in the button will go
out.
Press the P button. The indicator lamp in the button
illuminates.
Increase temperature setting.
Open the side air outlets (9, page 138) and direct them
onto the side windows.

163 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Button and soft key operation
In these instructions, the alpha-numeric keypad (right
side of radio face) and the function buttons (left side of
the radio face) are referred to as “buttons” and the four
keys under the display are referred to as “soft keys”
Note:
Do not press directly on the radio display face.Operation
Switching on and off
Press the control knob .
The system is switched off when the electronic main key
in the starter switch is turned to position 0 or removed.
The radi o is swi tched on again when the electron ic main
key in the starter switch is turned to position 1 or 2.
Note:
The system can also be switched on separately with the
electronic main key removed, but will switch itself off
automatically after half an hour to conserve vehicle
battery power.

167 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Manual tuning
Press either the or
button. Step-by-step station
tuning in ascending or
descending order of
frequency will take place.
The first three tuning steps will take place without
muting. The radio will then be muted and high-speed
tuning will take place until the button is released.
The following tuning intervals will be shown on the
display:Seek tuning
Pre ss eit her t he or b utton. T he radi o will tun e
to the next receivable station.
Scan tuning
Press the button. Each
strongly receivable station on
the band selected will be
tuned in for 8 seconds. The
first scan will tune only the
stations with a high signal strength. The second scan
wi ll tune eve ry r ece ivable station . By pr ess in g e it her t he
, , , buttons or the button the
scan mode can be cancelled. FM 200 kHz
AM 10 kHz
WB Channels 1-7
SC #
SC #