2001 MERCEDES-BENZ C240 audio

161 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Operating and display elements
1On/off, volume, see page 163
2Telephone mode selector, see page 177
3Seek tuning, see page 167,
Track search (tape), see page 171,
Skipping tracks (CD), see page 175
Manual repeat dialing (telephone), see page 1804Radio mode selector, see page 166
5Manual tuning, see page 167 and 167
Fast Forward/Reverse (tape), see page 171
Fast Forward/Reverse (CD), see page 176
Telephone book, see page 178
6CD mode selector, see page 175
7Tape mode selector, see page 169

162 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 169
9Alpha-numeric keypad for
station storage and frequency entry, see page 169
optional telephone, see page 177
Tape eject, see page 170
Tape track select, see page 171
Dolby, see page 172
CD track access, see page 17710Scan tuning (Radio, see page 167)
Tape track search, see page 171
CD, see page 167
11Function button, see page 169 and 177
12Soft keys for
radio band selection, see page 166
tone controls, see page 164
scan, see page 167
13Tape eject, see page 169

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.

164 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.

165 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.

166 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”
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

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 #

168 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.
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
0OPR