2001 MERCEDES-BENZ C320 buttons

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
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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
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172 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Scanning
Press the button. “SEEK
FWD” will appear on the
display. Each track will be
played for 8 seconds in
ascending order. The search
will stop if any of the , , , ,
buttons are pressed.
Skipping of blank sections (Skip-Blank)
Press the “SB” key. The Skip-
Blank function is switched on
or off. When switched on, the
“SB” on the display is
highlighted.
With the “SB” function activated and no sound signal
received for approximately 10 to 15 seconds, the tape
will fast forward to the next sound signal.Dolby NR
1 (noise reduction system)
To enable optimum sound
reproduction of cassettes
recorded using the Dolby B
system, press the “NR” key so
the “NR” on the display is
highlighted. To turn off Dolby B noise reduction, press
the “NR” key so the “NR” on the display is not
highlighted.
1 Dolby and the double-D symbol
Ù
are trademarks of Dolby
Laboratories Licensing Corporation. The Dolby noise reduction
system is manufactured under licence from Dolby Laboratories
Licensing Corporation.
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175 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Playing CDs
Press the button. When the changer is used for the
first time after removing/inserting a magazine, play
begins at CD 1 track 1. After that, the CD most recently
played will start at the point where it was last switched
of f. CDs stored in the magazine can be selected by using
the station preset buttons 1-6.
The magazine slot number of
the selected CD will be
displayed after “CD”. The
number of the track being
played will be displayed after
“TRACK”.
If there is no CD in the
selected magazine slot,
“NO CD” and the
corresponding slot number
will be displayed
(e.g.“NO CD3”). After the last track on a CD has been
played, the next CD will automatically be selected and
played.Skipping tracks forward/backward
Press the button. The next track on the CD will be
played.
Press the button. If the track has been playing for
more than10 seconds, it will revert to the start of that
track. If it has been playing for less than ten seconds it
will revert to the preceding track. To skip several tracks,
the respective button must be pressed until the desired
track is reached. If the beginning or end of the CD is
reached during the search, the first or last track will be
played.

176 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Fast forward/reverse
Press and hold the button for audible fast forward.
Press and hold the button for audible reverse.
The search will stop when the
button is released. The played
time of the track will be
displayed during the search.
The search mode will cancel if
the beginning or end of the CD is reached.
Scanning
Press the button. Each track will be played for
8 s econ d s i n as cen di ng or de r. The s earch will stop at t he
current track if any of the , , , ,
buttons are pressed.Random play/repeat function
The tracks of the current CD are played in random order
when the random feature (RDM) is selected. Press the
“RDM” key to switch on. “RDM” will be highlighted.
Press “RDM” again to switch off.
When the repeat function
(RPT) has been selected, a
particular track can be played
for as many times as desired.
Press the “RPT” key to switch
on. “RPT” will be highlighted. Press “RPT” again to
switch off.
Note:
Both functions cannot be used simultaneously.
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177 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Direct track selection
Tracks can be selected directly using the buttons on the
alpha-numeric keypad. Press the “ function button,
followed by the track number.
Track and time display
Pressing the function button
“T” displays the track number
and elapsed playing time of
the track being played.
Pressing the function button “T” again displays the total
number of tracks and the total playing time of the CD
being played. After 8 seconds the display switches back
to the main display.Te l e p h o n e o p e ra t i o n
Various functions of the Mercedes-Benz integrated
portable cellular telephone
1 can be performed and
displayed via the system. Further instructions for
operating the integrated telephone can be found in the
operation guide for the telephone
1.
Switching the telephone on and off
Switching on:
Press the button.
Switching off:
Press and hold the button until “PHONE OFF”
appears on the display.
1Optional equipment

179 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Searching and selecting telephone book entries by
name
Press the “ABC” key. The
current name is shown on the
display. The stored entries in
alphabetical order can be
selected using the or
button. By pressing the or button, the
stored entries can be selected according to alphabetical
initial letters (e.g. A-Adam, B-Brown, M-Miller).
Using the buttons - on the alpha-numeric
keypad the stored entries can be selected according
initial letters (e.g. B-Brown, press button twice).
Note:
Some signs and symbols cannot be displayed.Searching and selecting telephone book entries by
number
Press the “NUM” key. The
current number is shown on
the display. The stored entries
can be selected in numerical
order using the or
button. By pressing the or button, the stored
entries can be selected in increments of 5 (e.g. Entry
no.2, Entry no.7, etc.).
Placing a call
When a number or a name
has been selected using the
method described above,
press the “SND” key.
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