2008 MERCEDES-BENZ C300 ECO mode

211 Controls in detail
Audio system
Multisession CDs
For multisession CDs, the first session
type of the CD determines how the audio
system will process the CD.
For example, if the first session type is ac-
cording to the audio CD standard and the
second session type is according to the
data CD standard containing MP3 tracks,
the audio system will treat the CD as a con-
ventional audio CD. This means that it is
only possible to access the audio CD
tracks. Access to the MP3 tracks is not
possible.
Similarly, if the first session type is accord-
ing to the data CD standard containing
MP3 tracks and the second session type is
according to the audio CD standard, the
audio system will treat the CD as a data
CD. This means that it is only possible to
access the MP3 tracks. Access to the au-
dio CD tracks is not possible.File structure on a disc
When you create an MP3 disc, the MP3
tracks can be organized in folders. A folder
can also contain other folders. A disc can
contain a maximum of 255 folders. Each
folder can contain a maximum of
255 tracks and 255 folders. A disc can
contain a maximum of 4 000 tracks. Usual-
ly this number will not be reached because
each minute of an MP3 track requires ap-
proximately 1 MB of storage space.Track and folder names
When you create an MP3 disc, you can as-
sign names to the MP3 tracks and folders.
The audio system uses these names for
the corresponding display in MP3 mode.
Empty folders or folders which contain
data other than MP3 tracks are not dis-
played by the audio system.
If MP3 files are saved in the root directory
itself (uppermost directory on storage me-
dium), the root directory will also be treat-
ed as a folder. The audio system will then
show the name of the root directory as the
folder name.

212 Controls in detail
Audio system
You must observe the following when as-
signing track names:

Track names must have at least one
character.

Track names must have the extension
“mp3”.

There must be a period between the
track name and the extension.
Example of a correct track name:
Track1.mp3
The audio system is unable to recognize an
MP3 track if:

there is no period between the track
title and the extension

there is no extensionPermissible MP3 formats
The audio system supports the MPEG1 Au-
dio Layer 3 format.
Compatible file systems and compres-
sion methods
The following compression methods are
compatible:

MP3

WMA
Permissible bit and sampling rates

Fixed and variable bit rates up to
320 kbit/s

Sampling rates of 24 kHz – 48 kHzNotes on copyright
The music tracks that you create for MP3
mode and can play back in MP3 mode are
generally subject to copyright protection in
accordance with the applicable interna-
tional and national regulations.
In many countries, reproductions are not
permitted without the prior consent of the
copyright holder, not even for private use.
Make sure you know the applicable copy-
right regulations and that you comply with
these.
If you own these rights yourself, e.g. for
your own compositions and recordings, or
the copyright holder has granted you per-
mission, these restrictions do not apply.
iThe audio system does not support ID3 tags.
iThis format is generally known as “MP3”.
iIf music files, created with different com-
pression methods, in addition to MP3 files, are
stored together on a disc, the loading process
may take longer before the first track is played.
iOnly use MP3 tracks with a bit rate of at
least 128 kbit/s or higher and a sampling rate of
at least 44.1 kHz or higher. Smaller rates can
cause a noticeable deterioration in sound quali-
ty. This is especially the case if you have activat-
ed the surround sound* function.

213 Controls in detail
Audio system
Operating the CD player
The single CD drive and the CD changer*
have the same controls.
1CD slot
2Eject/load button
3Forward
4RewindSingle CD player
Switching to CD mode: Press
buttoné on the audio control unit.
The CD display appears when you
switch to CD mode. CDs start to play
automatically when they are inserted.
The following message will appear if no
CD is inserted.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.
!If a CD is already loaded, it must be ejected
before inserting a new CD. Inserting a second
CD in the slot with another CD still loaded will
cause damage to the CD drive not covered by the
Mercedes-Benz Limited Warranty.

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.

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.


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.

226 Controls in detail
Audio system
Activating Bluetooth®
Switch on the telephone
(see telephone operating instructions).
Enter the PIN (not necessary at each
telephone or network).
Activate Bluetooth® connection on the
telephone (see telephone operating in-
structions)
Press buttonh on the audio control
unit to call up the telephone mode.
Activate Bluetooth® connection on the
audio system (
page 193).
ê
System
Activate Blue-
tooth
.
You have activated or deactivated
Bluetooth
®. A checkmark appears
when Bluetooth® is activated.
Registering a telephone (authorizing)
When you use your telephone in conjunc-
tion with the audio system for the first
time, you must register (authorize) it.
It is possible to register several tele-
phones. The connection is always estab-
lished to the last activated telephone in
signal range. When you authorize a new
telephone, it is activated automatically.
You can switch between the authorized
telephones.Searching for a telephone
h
Tel
Phone List
Update.
The audio system searches for suitable
Bluetooth
® telephones within range
and enters them in the telephone list.
Authorized Bluetooth
® telephones will
be identified by a telephone-symbol in
front of the list entry once the tele-
phone list has been updated. (The sym-
bol will be grayed out if the authorized
phone is not located in the Bluetooth
®
range.)
iOn certain telephones, not only do you have
to activate the Bluetooth® function but your own
device must additionally be made “visible” for
other devices.
Each Bluetooth
® device has a Bluetooth® device
name. It is recommended to give your telephone
a personal name, by which you can clearly recog-
nize your telephone.
iIf the Bluetooth® function on the audio sys-
tem is disabled, the message
Bluetooth not
activated in system settings
appears.
iThe duration of the search procedure de-
pends on the number and type of Bluetooth®
telephones. The search may take a few minutes.
iIf the telephone list is already full (15 en-
tries), you must de-authorize one of the autho-
rized devices. Then you will start the search
again. Otherwise a new device you are looking
for will not appear in the list.
If the audio system does not find your phone, ex-
ternal authorization may be necessary
(
page 228).

237 Controls in detail
Audio system
Making calls
Press buttonh on the audio control
unit to call up the telephone mode.
When the mobile phone is ready for opera-
tion, the display will look like this:
Initiating an outgoing call
Entering phone number via the audio
control unit
You can enter numbers and special charac-
ters via the telephone keypad.
Entering: Use 0 to 9, ô and ó to
enter characters.You can enter the * character by press-
ing the ó button once. You can en-
ter the + character by pressing the
ó once and then again within ap-
prox. 1.5 seconds.
To delete individual digits: Briefly
press buttonî in the audio control
unit.
To delete an entire entry: Press and
hold buttonî until the entire entry
has been deleted.
or
Press buttont.
Entering phone number via the audio
controller
In addition to the actual menu bar, the tele-
phone main menu features a second bar
containing numbers, the number menu.
When the bar is active (highlighted), you
can select elements.
To enter digits: Slideompor
rotateymz the audio controller to se-
lect the required digit.
Press n to confirm.
Repeat the procedure, until you have
select all digits for the necessary
phone number.
To delete individual digits:
Slideompor rotateymz to
selectõ and briefly pressn.
or
Press îbutton next to the audio
controller.