2008 MERCEDES-BENZ C300 Controls in detail

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

224 Controls in detail
Audio system
Operating options
When the telephone is connected via the
Bluetooth
® interface to the audio system,
you can operate the telephone using the
following devices:

buttonss andt and keypad on
audio control unit

audio controller in center console

multifunction steering wheel
Please note that these functions are only
available with Mercedes-Benz approved
telephones. Please contact an authorized
Mercedes-Benz Center for information on
features available for your telephone of
choice. Unless otherwise indicated, the descrip-
tions and illustrations in this section refer
to audio system.Caller ID
The audio system can display the tele-
phone number and the name of the caller,
e.g. for an incoming call and also in other
menus or displays.
For the telephone number to be displayed,
the caller must transmit their telephone
number.
This is also the case for name displays. For
this, the telephone number and the name
of the caller must also be saved in the tele-
phone book.
iThe components and operating principles of
the audio system can be found on (
page 177)
and (
page 187).
iIn order for the functions described in this
section to work correctly, the Bluetooth® tele-
phone must be linked to the audio system
(
page 192). Please make sure any other Blue-
tooth® device linked with the telephone is
switched off before you use the telephone func-
tions with the audio system.

225 Controls in detail
Audio system
Functional restrictions
You will not be able to use the telephone,
or you may have to wait a while, in the fol-
lowing situations:

If the telephone is switched off.

If the telephone is not connected via
the Bluetooth® interface to the audio
system.

The telephone must not be locked.

If the telephone has not yet logged into
the network.
The telephone automatically tries to
log into a network. If no network is
available, you will also not be able to
make a “911” emergency call.
If you attempt to make an outgoing call,
the
No Service message will appear for
a short while.

If you switch off the audio system in the
middle of a call, e. g. by switching off
the ignition, that call will be cut off. You
can prevent this from happening as fol-
lows:

Switch the phone to “private mode”
before switching the audio system
off (see telephone operating in-
structions).Activating the telephone
Prerequisites for the telephone
For making calls using the audio system
via the Bluetooth
® interface, you will need
a Bluetooth® enabled telephone.
Before attempting to make or receive calls
via the Bluetooth
® interface, check your
phone's hands-free profile. It must support
version 1.0 or higher (see telephone oper-
ating instructions).
iNot all telephones on the market are suit-
able. Further information on suitable telephones
and on connecting Bluetooth
® enabled tele-
phones to the audio system are available from an
authorized Mercedes-Benz Center.