radio controls MERCEDES-BENZ C320 4MATIC WAGON 2004 S203 User Guide

169 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help
you become familiar with your
Mercedes-Benz audio system. They con-
tain useful tips and a detailed description
of the user functions.
Operating safety
Warning!
G
In order to avoid distraction which could
lead to an accident, the driver should enter
system settings with the vehicle at a stand-
still and operate the system only when road
and traffic conditions permit. Always pay full
attention to traffic conditions first before
operating system controls while driving.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is cover-
ing a distance of 50 feet (approximately
14 m) every second.
Warning!
G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, amplifier, CD changer*, satellite
radio*, telephone* and voice control sys-
tem* are interconnected. When one of the
components is not operational or has not
been removed/replaced properly, the func-
tion of other components may be impaired.
This condition might seriously impair the
operating safety of your vehicle.
We recommend that you have any service
work on electronic components carried out
by an authorized Mercedes-Benz Center.

171 Controls in detail
Audio system
Item
Page
1
CD mode selector
185
2
Manual tuning
(radio)
175
Fast forward/reverse
(cassette, CD)
184,
188
Speed dialing memory
(telephone*)
193
3
Radio mode selector
175
4
Display panelCassette compartment
behind display panel
Item
Page
5
Alpha-numeric keypadBand selection,
station buttons (radio)
175
CD selection (CD)
187
Telephone number entry,
retrieving speed dialing
memory (telephone)
190
6
Scanning (radio, cassette,
CD)
177,
184,
188
7
Function button
176
8
Light-emitting diode
Item
Page
9
Function keys
a
Cassette eject
183
b
Cassette mode selector
182
c
Telephone* mode selector
189
d
Seek tuning (radio)
176
Track search (cassette,
CD)
183,
188
Speed dialing memory
(telephone)
193
e
On/off
172
Volume
172

172 Controls in detailAudio systemButton and soft key operation
In these instructions, the alpha-numeric
keypad (right side of radio panel) and the
function buttons (left side of radio panel)
are referred to as “buttons”. The four keys
below the display panel are referred to as
“soft keys”.
Operation
Switching on/off
Switching on:
Turn SmartKey in starter switch to
position1 or2 .
or

Turn control knoba.
Switching off:

Remove SmartKey from starter switch.
or

Turn control knoba.Adjusting the volume

Turn control knoba.
The volume will increase or decrease
depending on the direction turned.
Adjusting audio functions
Press the AUD key to call up the bass, tre-
ble, balance and fader functions in the var-
ious operating modes. Settings for bass
and treble are stored separately for the AM
and FM frequency bands, satellite radio
(SAT) mode, cassette mode and CD mode.
!Do not press directly on the display
face. Otherwise, the display will be
damaged.
iIf the radio is switched on without the
SmartKey in the starter switch, it will
automatically switch off again after ap-
prox. 30 minutes.
iThe volume setting can be selected
separately for the telephone*, audio
system and voice control system*.

175 Controls in detail
Audio system
You can select from among the
following settings:

DRV
: The tone level is set to the
Driver position; sound is directed
toward the passengers.


SP: The tone level is set for Speech,
optimizing the sound for the spoken
word.


AMB
: The tone level is set for
Ambience, producing a
three-dimensional sound.


OFF
: The audio system sound
selection is turned off.
Telephone* muting
If a telephone has been installed in the
vehicle, the radio will switch to telephone
mode when a call is incoming. The current
audio source is muted.
Radio operation
Selecting radio mode
Pressb button.

You can now receive radio stations
over the analog FM, AM or WB station
frequencies or you can receive chan-
nels digitally via satellite radio (SAT)*.
Analog station frequencies
Selecting the band
You can select from among FM, AM or WB
frequency bands.
Weather band (
page 178).

Press FM, AM or WB key repeatedly un-
til desired band has been selected.
The FM, AM and WB frequency bands
are called up one after the other.
The frequency band currently selected
appears in the upper left-hand corner
of the display.
Selecting a station
The following options are available for
selecting a station:


Direct frequency band input
(page 176)


Manual tuning (
page 176)


Automatic seek tuning (
page 176)


Scan tuning (
page 177)


Preset buttons (
page 177)


Automatic station memory (Autostore)
(page 177)
iFM frequency band:
FM 87.7......107.9 MHz
AM frequency band:
MW (medium wave) 530......1710 KHz

176 Controls in detailAudio systemDirect frequency input
Select the desired frequency band.
Press“ button.

Enter desired frequency using
buttons4 toM.Manual tuning

Select the desired frequency band.

Press and hold either thed or
cbutton until the desired
frequency is reached.
Step-by-step station tuning takes place
in ascending or descending order of
frequency. The first three tuning steps
will take place without muting. After-
wards, the radio will be muted and
highspeed tuning will take place until
the button is released.Automatic seek tuning

Select the desired frequency band.

Press either thef or ebutton.
The radio will tune to the next higher or
next lower receivable frequency.
iYou can only enter frequencies within
the respective waveband.
If a button is not pressed within four
seconds, the radio will return to the
station last tuned to.

177 Controls in detail
Audio system
Scan tuning

Starting scan tuning
Select desired frequency band.

Press2 button.SC will appear on the display. The
radio briefly tunes in all receivable
stations on the band selected. The
first scan cycle will tune in only the
stations with a strong signal. The
second scan cycle will tune in every
receivable station.


Ending scan tuning
Press2 button ord, c,
f or ebutton.SC disappears from the display.Manual station memory (Presets)
You can store ten AM and ten FM stations.


Storing stations
Tune in the desired station.

Press and hold desired station
button4 toM until a brief
signal tone is heard.
The frequency is stored on the
selected station button.
The frequency band and station
button number are shown in the up-
per left-hand corner of the display.


Retrieving a station from memory
Press desired station button4
toM.Automatic station memory (Autostore)
The Autostore memory function provides
an additional memory level. The station
memory for manually stored stations is not
overwritten.


Calling up Autostore memory level
Briefly press the
AS key.
AS is highlighted in the display.
The radio finds the ten stations with
the strongest signals. These
stations are stored on the station
buttons4 toM in order of
signal strength.


Retrieving a station from memory
Press desired station button4
toM.


Leaving the Autostore memory level
Press the
AS key.
The highlighted
AS in the display
disappears.

178 Controls in detailAudio systemWeather band
Press the
WB key.
The weather band station last selected
is tuned in.

Select the desired weather band
station with buttons4 to7.
If a station cannot be tuned in, a scan
is automatically started.

Pressf or ebutton. The next
receivable weather band station is
tuned in.
Satellite radio (SAT)* (USA only)Sirius Satellite Radio provides 100 chan-
nels of digital-quality radio, among others
music, sports, news, and entertainment,
free of commercials. Sirius Satellite Radio
uses a fleet of high-power satellites to
broadcast 24 hours per day
coast-to-coast.
This diverse, satellite-delivered program-
ming is available for a monthly subscrip-
tion fee.
For more information, call the Sirius ser-
vice or contact www.siriusradio.com
Program categories
The channels are categorized. The catego-
ries allow you to tune to stations broad-
casting a certain type of program
(PTY mode) (
page 181).
iAdditional optional satellite radio
equipment and a subscription to
satellite radio service provider is re-
quired for the satellite radio operation
described here. Feature description is
based on preliminary information
available at time of printing.
At time of printing, no date for the
availability of optional equipment re-
quired for satellite radio operation had
been set. Contact your authorized
Mercedes-Benz Center for details and
availability for your vehicle.
Satellite radio service may be unavail-
able or interrupted from time to time
for a variety of reasons, such as envi-
ronmental or topographic conditions
and other things we can't control.
Service might also not be available in
certain places (e.g., in tunnels, parking
garages, or within or next to buildings)
or near other technologies.

179 Controls in detail
Audio system
Starting satellite radio (SAT)
Start radio mode.
If the radio was in SAT radio mode be-
fore being turned off or changed to an-
other operating mode, the last SAT
channel selected is called up.
or

Press the
SAT
key.
When you call up the SAT radio mode
for the first time,
ACQUIRING
will appear
on the display during the initialization
process.
or
The last channel selected is called up.Entering the Electronic Serial Number
(ESN)
The first time SAT radio is called up, you
must give your SAT radio provider the Elec-
tronic Serial Number (ESN) of your SAT re-
ceiver over the telephone.

Press the
SAT
key.
The radio switches to SAT mode.
CALL SIRI
appears on the display.

Press the
ESN
key.
The provider’s phone number will ap-
pear first. After pressing the
ESN
key
again, the ESN number will appear.
Make note of the phone number and
ESN number.

Press the
ESN
key repeatedly until all
required information has appeared on
the display.

Call the telephone number and give
provider your ESN number.iCredit card information is also required
for your application.
The activation process takes approxi-
mately five to ten minutes after calling
the SIRIUS Service Center.

180 Controls in detailAudio systemChannel selection
The following options are available for se-
lecting a channel:

Direct channel input (
page 180)


Manual tuning (
page 180)


Preset channels (
page 180)
Direct channel input

Press“key.

Enter desired channel number using
buttons4 toM.Manual tuning

Press and holdf, d, c or
e button until the desired channel
has been reached.
Preset channels
You can store up to ten channels.


Retrieving a channel from memory
Press the desired channel
button4 toM.


Storing channels
Tune in the desired channel.

Press and hold desired channel
button4 toM until a brief
signal tone sounds.
The channel is stored on the selected
channel button.
iOnly inputs for available channels are
possible.
If a button is not pressed within four
seconds, the radio will return to the last
station tuned.

181 Controls in detail
Audio system
Program type (PTY) mode
In PTY mode, you can tune in and select
channels of a specific program type.
Calling up PTY mode
Start SAT radio mode.

Press the
PTY
key.
The name of the channel currently
being received is shown.
Leaving PTY mode

Press the
CH
key.
The number of the channel currently
being received is shown.Selecting channel category

Pressd or cbutton.
The individual program types are se-
lected.
Tuning in a PTY channel
Once you have selected a program type,
you can tune in channels broadcasting a
program that corresponds to the selected
program type.

Pressf or ebutton.
The radio will tune to the next highest
or lowest channel broadcasting this
type of program.Program Descriptive Text (PDT)
In PDT mode, you can call up additional in-
formation on the channel, the current track
and the performing artist(s).

Press the
TXT
key.
The station category appears on the
display.

Press the
TXT
key again within four
seconds.
The title of the current track appears.

Press the
TXT
key again within four
seconds.
The name of the musician(s) of the cur-
rent track appear on the display.