2008 MERCEDES-BENZ C300 Key go

205 Controls in detail
Audio system
Channel number is valid, but channel is
not included in subscription: The mes-
sage
Please call SIRIUS to subscribe
pops up (
page 202).
Press n to close the message in the
audio display.
Tuning in channels using the satellite ra-
dio channel list
b
Sat
Channel List.
The channel list appears. The dotR in
front of a list entry indicates the cur-
rently selected channel.
Select channel by rotating ymz or
slidingqmr.
Press n to confirm.Tuning in channels using satellite radio
channel presets
b
Presets.
or
Press n when the main area is select-
ed.
The preset menu appears. The dotR
in front of a preset position indicates
that this is the channel currently select-
ed and being listened to.
Select station in memory by rotating
ymz or sliding qmr.
Press n to confirm.
or
Press desired station button1 to
R, with the keypad in audio control
unit briefly.
The audio system tunes in the correspond-
ing channel as long as it is included in your
subscription and is still available.
If the channel is not included in your sub-
scription, you will see the message de-
scribed in the section “Satellite radio
service is not activated” (
page 202).
If the channel is no longer available, you
will see the message
Invalid Channel.
Closing message: Press n.iThe contents of the channel list depends on
which channels are included in your subscription
and which program category you have selected
(
page 203). If only the preview channel is acti-
vated, the channel list contains only the preview
channel.

206 Controls in detail
Audio system
Storing channels
Press n when the main area is select-
ed.
or
b
Presets.
In both cases, the preset menu will appear
in the audio display. The dot R in front of
a preset position indicates that the chan-
nel currently selected is stored there.
Selecting a preset position:
Slideqmr or rotate ymz.
Storing a preset position: Press and
hold n until you hear a signal.
The channel is stored.
or
Press and hold desired channel
button1 to R on keypad, until a
brief signal tone sounds.
The channel is stored.
Show program info
b
Info.
You will see a screen that may contain the
following information (if available):

Selected program category

Selected channel

Artist of the track currently being
played

Name of current trackWith the telephone keypad button ô
you can call up an popup screen, if provid-
ed by the program provider, that shows the
name of the actor and title of the current
track played on the selected channel.
Closing screen: Slide omp or
pressn.
iThere are ten preset positions available.
iIf the program provider does not offer any in-
formation, the “Info” menu item cannot be se-
lected.
iThe program provider determines what in-
formation is displayed on the screen. The audio
system shows no more than two lines per item of
information. If an item of information is too long,
the audio system shortens it.

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.

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*.

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.

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.

227 Controls in detail
Audio system
Authorizing a Bluetooth® device
Select the desired unauthorized device
from the telephone list by pushing the
audio controller.
or
Select Options
Authorize.
The input menu for the passcode
appears.On the audio system, you can enter the
passcode via the digits in the on-screen
menu bar or via the telephone keypad in
the audio control unit.With the audio controller:
Entering passcode: Select the digits
in the menu bar one by one, by
slidingompor rotating ymz the audio
controller.
Press n to confirm each digit.
Confirming passcode: Selectdin
the menu bar and press n to confirm.
Deleting digits: Select õ in the
menu bar and briefly press n to delete
one digit, or press and hold n to delete
all entered digits.
Canceling entry: Press buttoní in
the center console (
page 184).
iThe passcode is any one- to sixteen-digit
number, which you can set yourself. For the
quality of coding of the connection it is recom-
mend to use a passcode of at least four digits.
You must enter the same number in the audio
system and also in the device to be authorized.
Please also refer to the instructions in the tele-
phone operating guide.