Audio MERCEDES-BENZ C300 2008 W204 Workshop Manual

214 Controls in detail
Audio system
Ejecting a CD: Press eject/load
button2.
The system ejects the CD.
Please
Remove Disc
appears in the display.
Remove CD from CD slot1.
NO Disc appears in the display.
Loading a CD: Insert CD into CD
slot1.
The system automatically pulls the CD
into the CD slot1 and starts to play
the audio CD if it has been inserted cor-
rectly and is permissible.
CD changer*
The CD changer can hold up to a total of 6
audio CDs
Switching to CD mode: Press
buttoné on the audio control unit.
The CD changer display appears when
you switch to CD changer mode. If
there is a CD in one of the magazine
trays, it will start to play automatically.
The following message will appear if no
CDs are inserted.
iIf you do not take the CD out of the CD
slot1 within approximately. 15 seconds, the
system automatically pulls the CD back in and
plays it.
If a CD is pulled back in, press eject/load
button2 again; the CD will then be ejected.
iIf the audio CD is printed on one side, this
side must face upwards when loaded. If neither
side is printed, the side to be played must face
downwards.
If a CD has been inserted incorrectly or cannot
be read,
Disc Unreadable appears in the
display.
Warning!G
Only insert a CD when the vehicle is station-
ary. There is a risk of accident by being dis-
tracted from road and traffic conditions if
you load a CD while the vehicle is in motion.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.

215 Controls in detail
Audio system
Loading an individual magazine
compartment: Press eject/load
button2.
A menu indicates which magazine com-
partments are currently loaded. The
first available magazine compartment
is indicated by a red number.
Press desired button1 to 6, in
the keypad to select a magazine com-
partment.
or
Slide omp or rotate ymz to select a
magazine compartment.
Press n to confirm.
The CD changer will switch to the se-
lected magazine compartment. The
message
Please Wait... appears in
the display.
Insert CD into CD slot1.
The CD changer automatically pulls the
CD into the CD slot1 and places it in
the selected magazine compartment.
The message
Loading Disc
appears in the display.
Press buttoné, or the eject/load
button2 on the audio control unit to
finish the loading process.
The CD changer plays the disc if it has
been inserted correctly and is permissi-
ble.
To interrupt loading procedure:
Press the eject/load button again.
or
Press buttoní in the center con-
sole (
page 184).
iIf the audio CD is printed on one side, this
side must face upwards when loaded. If neither
side is printed, the side to be played must face
downwards.
If a CD has been inserted incorrectly or cannot
be read,
Disc Unreadable appears in the
display.
iOnly insert a CD after the audio system has
prompted you to do so with the message
Please
Insert Disc
. Only insert one CD per mag-
azine compartment.
iThe loading process may take a while, de-
pending on the type of disc. If you do not insert a
disc, the display will switch back to the
Maga-
zine
menu after approximately 20 seconds.

216 Controls in detail
Audio system
Filling an empty magazine compart-
ments: Press eject/load button2.
A menu indicates which magazine com-
partments are currently loaded. The
first available magazine compartment
is indicated by a red number.
Slidemr to select the menu bar.
Slideompor rotate ymz the audio
controller to select
Fill Empty Slots.
Press the audio controller n.
The message
Please Insert Disc
appears in the display.
Insert CD into CD slot1.
The CD changer automatically pulls the
CD into the CD slot1 and places it in
an empty magazine compartment. The
message
Please Wait... appears in
the display. If the CD is loaded, the CD
changer will switch to the next empty
magazine compartment. The message
Please Insert Disc appears in
the display.
Repeat the steps until all compart-
ments have been loaded.
Press eject/load button2 on the au-
dio control unit to finish the loading
process.
The CD changer plays the last loaded
disc if it has been inserted correctly
and is permissible.
To interrupt loading procedure:
Press the eject/load button2 again.
or
Press buttoní in the center
console (
page 184).
The loading process has not been complet-
ed, the audio system will play the last in-
serted CD.
Ejecting CDs from CD changer*
iOnly insert a CD after the audio system has
prompted you to do so with the message
Please
Insert Disc
. Only insert one CD per mag-
azine compartment.
Warning!G
Only eject a CD when the vehicle is station-
ary. There is a risk of accident by being dis-
tracted from road and traffic conditions if
you unload a CD while the vehicle is in
motion.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.

217 Controls in detail
Audio system
Ejecting one CD: Press eject/load
button2.
The magazine menu with active main
area appears in the audio display. The
magazine compartment with the cur-
rent CD is highlighted.
Press desired button1 to 6, in
the keypad to select a magazine com-
partment.
or
Slideompor rotate ymz the audio
controller to select the desired CD.
Press n to confirm.
Remove the CD from CD slot1.
If you do not remove the CD from the
CD slot 1, the CD changer will auto-
matically pull the CD back in after a
short while.
Ejecting all CDs: Press eject/load
button2.
The magazine menu with active main
area appears in the audio display. The
magazine compartment with the cur-
rent CD is highlighted.
Slidemr to select the menu bar.
Slideompor rotate ymz the audio
controller to select “Eject All”.
Press n to confirm.
The CDs are ejected one after the
other.
Remove the CD from CD slot1.
The CD changer switches to the next
occupied magazine compartment and
ejects the CD.
If you do not remove the CD from the
CD slot 1, the CD changer will auto-
matically pull the CD back in after a
short while.
Repeat the last step until the magazine
is empty.
Selecting a CD
é
Changer.
The magazine menu with active main
area appears in the audio display. The
magazine compartment with the cur-
rent CD is highlighted.
Slideompor rotate ymz the audio
controller to select the desired CD.
Press n to confirm.
iIf you eject a CD while another is being
played, the audio system interrupts playback.
Playback will continue once the CD has been
ejected completely.

218 Controls in detail
Audio system
Playing CDs
Additional button functions
In CD mode, you can use two additional
buttons on the telephone keypad:
ôdisplays information about the
track, if this has been saved
with the track on the CD.
óenables you to enter the track
number directly.Example display in audio CD mode
1Track number
2Track name (only if saved on the disc)
3Elapsed track time
4Disc name (only if saved on the disc)
5Disc number (CD changer*)
6Disc typeExample display in MP3 mode
1Track number
2File name
3Elapsed track time
4Mode
5Folder name (only if saved on the disc)
6Disc number (CD changer*)
7Disc type
Pause function
Pausing playback:
Press F briefly.
Continuing playback: PressF
again briefly.
iThe following section is valid for the single
CD player and the CD changer*. The illustrations
show the audio display of the CD changer*.

219 Controls in detail
Audio system
Selecting a track
Skipping forwards or backwards to
a track: Rotate ymz or slideomp.
or
Briefly press buttonG or H on
audio control unit.
Selecting from the track list:
é

Track List.
or
Press n when the main area is select-
ed.The track list appears. In MP3 mode,
the track list of the current folder ap-
pears. The dotR indicates the current
track.
Select a track by rotating ymz or slid-
ing qmr.
Press n to confirm.
Fast forward/rewind
Select main area.
Slide and hold omp until desired place
is reached.
or
Press and hold buttonG or H on
audio control unit.Selecting a folder
é
Folder.
or
Press n when main area is selected.
The track list of the current folder ap-
pears.
Selecting one folder higher: Select
the Q symbol.
The display changes to the next folder
up in the folder structure on the disc.
Selecting a folder: Slideqmror ro-
tate ymz the audio controller, to se-
lect the desired folder.
Press n to confirm.
You will see the tracks in the folder.
iSkipping forwards through the tracks skips
to the next track. Skipping backwards through
the tracks skips to the beginning of the current
track if the track has been playing for more than
8 seconds. If the track has been playing for less
than 8 seconds, it skips to the start of the previ-
ous track.
If you have switched on the “Random Tracks”
playback option, the order of the tracks is ran-
dom.iIn MP3 mode, the list shows all the tracks in
alphabetical order.
iThis function is only available in audio MP3
mode.


220 Controls in detail
Audio system
Select a track by slidingqmror rotat-
ing ymz the audio controller.
Press n to confirm.
The track is played and the correspond-
ing folder is now the active folder.
Playback options
The following options are available:

Normal Track Sequence
Tracks playback in the order on the
disc (e.g. track 1, 2, 3, etc.).

Random Tracks
Tracks playback in a random order
(e.g. track 3, 8, 5, etc.).

Random Folder (in MP3 mode only)
Tracks in the active folder and any sub-
folders playback in random order.
Selecting an option: é
CD/MP3.
The option list appears. A dot R indi-
cates which option is switched on.
Select an option and press n.
The option is switched on. For all op-
tions except
Normal Track Sequence,
you will see a corresponding indicator
in the main area.
Audio Aux mode
An external audio source (Aux) can be con-
nected to the audio system. The
cinch-connector for connecting the exter-
nal audio source (Aux) is located in the
glove box. Please contact an authorized
Mercedes-Benz Center for more informa-
tion
1External audio source (Aux)
cinch-connector
iThe “Normal Track Sequence” option is au-
tomatically activated when you select a different
medium. If an option is activated, it remains acti-
vated after the audio system is switched on/off.


221 Controls in detail
Audio system
Calling up Aux mode
Selecting audio Aux mode:
é

CD/MP3
Aux.
The audio Aux menu appears. The me-
dium in the external audio source is
heard, provided it is connected and
switched to playback.The following settings can be made in the
audio Aux mode:

Volume (page 189)

Balance control and fader
(
page 190)

Bass and treble control (page 189)

Surround sound (page 190)
Switch back to CD mode
Select Back To Disc in the audio Aux
menu.
The CD mode is switched on.
Warning!G
Only operate an external audio source (Aux)
when the vehicle is stationary. There is a risk
of accident by being distracted from road
and traffic conditions if you operate an ex-
ternal audio source (Aux) while the vehicle is
in motion.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is
covering a distance of 44 feet
(approximately 14 m) every second.Warning!G
Due to the different volumes of the external
audio sources, system messages (e.g. traffic
and navigation announcements) may be
much louder. You may need to disable these
system messages or adjust the volume of
these messages manually.
iPlease refer to the relevant operating guide
for operation of the external audio source.
iThe volume of external audio sources is ex-
tremely variable. It is possible that a device con-
nected as an external audio source will sound
quieter or louder in the vehicle or that the usual
maximum volume cannot be achieved. On cer-
tain devices the volume can be set separately. In
this case, start at a moderate volume and in-
crease it slowly. In this way, you can determine
whether the system is capable of playback with-
out distortion, even at high volume.

222 Controls in detail
Audio system
Telephone*
Safety precautionsWhen the telephone is connected via the
Bluetooth® interface to the audio system,
you can operate the telephone using the
following devices:

audio system (page 237)

Audio controller

Audio control unit

buttonss andt on the multi-
function steering wheel (
page 152)

mobile phone keypad
Please note that these functions are only
available with Mercedes-Benz approved
telephones.
Warning!G
Some jurisdictions prohibit the driver from
using a cellular telephone while driving.
Whether or not prohibited by law, for safety
reasons, the driver should not use the cellu-
lar telephone while the vehicle is in motion.
Stop the vehicle in a safe location before
placing or answering a call.
If you nonetheless choose to use the tele-
phone
1 while driving, please use the hands-
free device and be sure to pay attention to
the traffic situation at all times. Use the tele-
phone only when road, weather and traffic
conditions permit. Otherwise, you may not
be able to observe traffic conditions and
could endanger yourself and others.
1Observe all legal requirements.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approxi-
mately 14 m) every second.
Warning!G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or
personal injury.
iThe functions and services available to you
while using the telephone depend on your ser-
vice provider and the type of telephone you are
using. See also separate operating manual for in-
structions on how to use your telephone.

223 Controls in detail
Audio system
TEL Menu
General notes
Making calls via Bluetooth
® interface
The audio system telephone function via
the Bluetooth
® interface is available in
conjunction with a Bluetooth® enabled
telephone.
With a suitable telephone, you can use the
hands-free device and receive electronic
business cards (vCards) via the Bluetooth
®
interface.Further information on suitable telephones
and on connecting Bluetooth
® enabled
telephones to the audio system are avail-
able at an authorized Mercedes-Benz
Center.
Calls disconnected while the vehicle is
in motion
Interruptions to the connecting may occur
if

there is insufficient mobile network
coverage in certain regions.

you move from one mobile network
transmitter/receiver area (mobile net-
work cell) into another and no channels
are free or the cell is full.

you are using a SIM card that is not
compatible to the available network.

when using a telephone with “Twin-
card”, the telephone is simultaneously
logged into the network with the sec-
ond SIM card.
TelephoneNameCall lists
Microphone off/on
Phone listPhone bookCall Lists
Receive Business Card(s) (vCards)Delete Call Lists
Mic On/Mic Off
Delete external data