2002 MERCEDES-BENZ C230 KOMPRESSOR COUPE index

175 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 8Display panel
The cassette slot is located behind the display panel.
For notes on playing cassettes, see page 182
9Alpha-numeric keypad for
station storage and frequency entry, see page 182
optional telephone, see page 190
Tape eject, see page 183
Tape track select, see page 184
Dolby, see page 185
CD track access, see page 19010Scan tuning (Radio, see page 180)
Tape track search, see page 184
CD, see page 180
11Function button, see page 182 and 190
12Soft keys for
radio band selection, see page 179
tone controls, see page 177
scan, see page 180
13Tape eject, see page 182

176 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 key in
the starter switch is turned to position 0 or removed.
The radio is switched on again when the electronic key
in the starter switch is turned to position 1 or 2.
Note:
The system can also be switched on separately with the
electronic key removed, but will switch itself off
automatically after half an hour to conserve vehicle
battery power.

177 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Adjusting the volume
Turning the control knob clockwise will increase the
volume, counterclockwise will decrease the volume.
Note:
The volume setting can be selected separately for the
telephone, audio system and voice recognition system.
Audio fu nctions
The “AUD” key is used to select the BASS, TREBLE,
FADER and BALANCE functions. Settings for bass and
treble are stored separately for the radio, cassette and
CD modes. Tone level settings are identified by the
vertical bars. The center (flat) setting is shown by one
longer bar in the center of the display.Bass
Press the “AUD” key
repeatedly until “BASS”
appears on the display.
Press the “+” key to increase
or the “-” key to decrease the level.
Pressing the “+” and “-” keys simultaneously resets the
Bass to its center (flat) level.
Treble
Press the “AUD” key
repeatedly until “TREBLE”
appears on the display.
Press the “+” key to increase
or the “-” key to decrease the level.
Pressing the “+” and “-” keys simultaneously resets the
Treble to its center (flat) level.

178 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Fader
Press the “AUD” key
repeatedly until “FADER”
appears on the display. Press
the “R” key to move the sound
to the rear speakers or the “F”
key to move the sound to the front speakers.
Pressing the “F” and “R” keys simultaneously resets the
Fader to its center level.
Balance
Press the “AUD” key
repeatedly until “BALANCE”
appears on the display.
Press the “L” key to move the
sound to the left speakers or the “R” key to move the
sound to the right speakers.
Pressing the “L” and “R” keys simultaneously resets the
Balance to its center level.Centering all audio functions
Push and hold down the
“AUD” key. All audio
functions (bass, treble,
balance and fader) are set to
center or flat positions, and
the volume is adjusted to a preset level. “RESET”
appears on the display.

179 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Audio system tone level selection
To select the tone level
settings for radio, cassette,
and CD operation press the
key “AUD”. The tone level
settings menu is now
displayed. Press key “EXT”, and “SOUND” appears on
the display.
Press the key “DRV” to adjust the sound to the driver
and co-driver position.
The key “SP” is for “Speech”, optimizing the sound for
spoken language.
The key “AMB” offers “Ambience”, a three-dimensional
sound.
The key “OFF” switches off the tone level setting
selection.Radio mode
Selecting radio mode
Press button.
Selecting the band
Press the key located below
the desired band. The band
selected is shown in the top
line of the display.
Frequency ranges: FM 87.9 -107.9 MHz
AM 530 -1710 kHz
WB approx.162 MHz

180 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
Press either the or button. The radio will tune
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 #

181 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index We a t h e r B a n d
Press the “WB” key. The last weather band station is
tuned in.
Use buttons - to select a different station. If
the station cannot be received, the next available station
is selected automatically.
Press button or . The next available station is
tuned in. The message “WB NONE” appears if no station
can be received.
Station memory
Ten stations each in the AM and FM bands can be stored
via the alpha-numeric keypad. The button
corresponds to location 10. Weatherband (WB)
channels 1 to 7 are preset at the factory and can be
retrieved via the alpha-numeric keypad, but cannot be
changed.Storing stations automatically (Autostore)
Press the “AS” key until the
word “SEARCH” is displayed.
The ten strongest stations are
stored automatically, with
having the strongest
signal.
If less than 10 stations are available within receiving
range, only those will be stored.
Pressing a station selection button without a stored
station will not display a frequency for approximately
2 seconds. Thereafter the station selected last will be
displayed.
Note:
Autostore memory is in addition to the regular station
memory. Previously stored stations are not erased.
Briefly press “AS” to leave the Autostore and return to
manual presets. Press “AS” again to call up Autostore.
7PQRS
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182 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Storing stations
Hold the desired number button - down for
approximately 2 seconds. The currently displayed
frequency is stored on the selected station button. The
storage procedure is confirmed by a short signal tone.
Retrieving a station from memory
Press the desired station button - .
Direct frequency input (AM and FM only)
Select the band. Press the
“ button and enter the
desired frequency using the
alpha-numeric keypad -
. Frequencies outside of
the frequency ranges (frequencies specified on
page 179) will not be accepted. The frequency input
mode is cancelled if no button is pressed within
4seconds.Cassette mode
Playing cassettes
Press the button. When the button is pressed,
the display folds down and the cassette slot becomes
visible. Push the cassette gently into the slot until it
engages. The cassette will be pulled in automatically.
Note:
Do not press directly on the display face.
Return the display panel to its normal position by
folding it back up and pressing gently on the display
frame to lock in place.
Important!
If the display is in the down position for more than
20 seconds, 2 successive beeps will be heard. This will
continue at 5 second intervals until the display is
returned to its normal position.
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