2008 MERCEDES-BENZ C300 audio

228 Controls in detail
Audio system
With keypad on audio control unit:
Entering passcode: Press the desired
numbers on the keypad.
Confirming passcode: Press
buttons or buttonô in the au-
dio control unit to confirm.
Deleting digits: Briefly press
buttonî in the audio control unit to
delete one number, or press and hold
buttonî to delete all entered num-
bers.
Canceling entry: Press buttoní in
the center console (
page 184).Entering passcode into the telephone
If a Bluetooth
® connection is established
successfully, you will be prompted to enter
a code into the telephone (see the operat-
ing instructions for the telephone).
Enter the same passcode on the tele-
phone as you did on the audio system.
The device is authorized. You can now
make calls via the audio system hands-free
device using the authorized telephone.External authorization
If the audio system cannot find your tele-
phone, this may be due to special security
settings on your telephone. In this case,
you can check whether, conversely, your
telephone can find the audio system. The
audio systems Bluetooth® device name is
“MB Bluetooth”.
h
Tel
Phone List
Update


Options
External Authoriza-
tion
.
Start Bluetooth® search procedure on
the telephone (see the operating in-
structions for the telephone).
Select the audio system (“MB Blue-
tooth”).
When prompted to do so, enter the
passcode on the telephone and then on
the audio system.
iYou may need to enter a confirmation once
you have entered the passcode on your phone.
Check your phone display.
If the message
Authorization Procedure
Unsuccessful
appears on the audio system
display, you may have exceeded the preset peri-
od for authorization. Repeat the process.

229 Controls in detail
Audio system
Displaying details on a telephone
h
Tel
Phone List.
Select the telephone from the list.
Select Options
Details.
The details screen for the device is
shown in the audio display.
To close details screen:
Slideompthe audio controller or
press buttoní in the center
console.
De-authorizing a Bluetooth
® device
h
Tel
Phone List.
Select authorized device.
Select Options
De-Authorize.
A prompt appears asking whether you
really want to de-authorize this device.
Select Yes or No.
If you select
Yes, the device will be
de-authorized.Activating another telephone
If you have several authorized telephones,
you can switch between the individual tele-
phones.
When you authorize a new telephone, it is
automatically activated. Only one tele-
phone can be active at a time.
h
Tel
Phone List.
Select an authorized telephone from
the list.
Press n to confirm.
The selected phone will be searched
for and connected if it is located in the
Bluetooth
® range and Bluetooth® is ac-
tivated on the corresponding device.
The selected telephone is activated.
A dotR in front of the entry, indicates
the current active telephone in the
phone list.
Receiving business cards
You can import business cards (vCards)
into the address book from external Blue-
tooth
® devices (page 233).
iIf you de-authorize a device which has been
authorized in the past and which is not detected
in the search, this device will no longer be dis-
played in the device list.
Devices which have been authorized in the past
but which are not detected in the search are ei-
ther not switched on or not in the vehicle.
iYou cannot switch to another authorized
phone during a call.

230 Controls in detail
Audio system
TEL-Basic display
Press buttonh on the audio control
unit to call up the telephone mode.
When the connected phone is ready for op-
eration, the display will look like this:
The following information is displayed in
the status bar:

Actual time:
04:38

Bluetooth® device name of the con-
nected phone, in this case:
blue_mobil

Mobile phone network signal
strengthI. This information will
only be shown with suitable tele-
phones.The bars indicate the current signal
strength of the mobile phone network
for reception. Optimum reception is in-
dicated by all bars full. All bars empty
indicates very poor or no reception.

Receiver symbols ort.
The receiver symbol indicates whether
a call is being connected or is in
progress:
t - not active

READY indicates that a call is possible.

NO SERVICE indicates that the mobile
network is not available.Setting transmit and receive volume
h
Tel
Phone List.
Select an mobile phone from the list.
Select Options
Reception Volume
or
Transmission Volume.
To set the volume: Slideqmror
rotateymz the audio controller.
The volume bar moves up or down.
To confirm selection: Press n or
slideomp the audio controller.
iThese settings should normally not be
changed as the factory settings are matched to
most mobile phones. Find out about the opti-
mum settings for your mobile phone at an
authorized Mercedes-Benz Center.
iChanges may result in significant impair-
ments to the transmission quality. These set-
tings may not be changed during an active phone
call.

231 Controls in detail
Audio system
“911” emergency call
The following describes how to dial a “911”
emergency call using the audio system
head unit when a Mercedes-Benz specified
mobile phone* is connected via the Blue-
tooth
® interface to the audio system. Un-
less otherwise specified, the descriptions
refer to the audio system head unit. Consult the separate telephone operating
instructions that came with your mobile
phone* for information on how to place a
“911” emergency call on the mobile
phone*.
The following conditions must be met for a
“911” emergency call via the audio
system:

Telephone must be switched on.

The corresponding mobile communica-
tions network must be available.
If you cannot make an emergency call, you
will have to initiate rescue measures your-
self. GSM network phones
Placing a “911” emergency call using
audio control unit with the phone un-
locked
Press hbutton to switch to tele-
phone mode.
Enter 911 using the number keypad on
the audio control unit.
Press sbutton.
or
Press n for dialing to begin.
DIALING appears in the audio display
while the telephone establishes the
connection.
Wait until the emergency call center
answers, then describe the emergency.
iThe “911” emergency call system is a public
service. Using it without due cause is a criminal
offense.
iThis function places a call to the local 911
provider. It does not initiate a Tele Aid call.
iEmergency calls may not be possible with all
telephone networks or if certain network serv-
ices and/or telephone functions are active.
Check with your local service providers.

232 Controls in detail
Audio system
Placing a “911” emergency call with the
phone lockedCDMA network phones
Placing a “911” emergency call using
audio control unit with the phone un-
locked
Press hbutton to switch to tele-
phone mode.
Enter 911 using the number keypad on
the audio control unit.
Press sbutton.
or
Press n for dialing to begin.
DIALING appears in the audio display
while the telephone establishes the
connection.
Wait until the emergency call center
answers, then describe the emergency.
Placing a “911” emergency call with the
phone locked
iIf no SIM card is in the mobile phone, with a
few types of mobile phones
NO SERVICE ap-
pears in the audio display. In that case, you only
can make an emergency call on the mobile
phone itself, without the use of the audio control
unit.
iIf the mobile phone is locked, you only can
make an emergency call on the mobile phone it-
self, without the use of the audio control unit.
iIf the mobile phone is locked, you only can
make an emergency call on the mobile phone it-
self, without the use of the audio control unit.

233 Controls in detail
Audio system
Phone book
You can save telephone numbers in the au-
dio system's phone book.
Receiving business cards (vCards)
You can import business cards (vCards)
from external Bluetooth
® phones into your
audio system's phone book. To do this:

Bluetooth® must be activated on the
audio system and on the external Blue-
tooth
® phone (see the operating in-
structions for the mobile phone).

The external Bluetooth® phone must be
able to send vCards via Bluetooth® (see
the operating instructions for the mo-
bile phone).

The external Bluetooth® phone in the
vehicle must be switched on and au-
thorized.
h
Tel
Receive Business
Cards
.
Press n to confirm.
To import: Start the data transfer on
the external Bluetooth® phone (“Export
business cards (vCards)”, see the oper-
ating instructions for the mobile
phone).
The audio system imports the data for
the business cards and displays the
number of business cards received.
To end reception: Press n.
or
Press buttoní in the center con-
sole (
page 184).Deleting external Data
h
Tel
Delete External Data.
A prompt appears asking whether the
data should be deleted.
Select Yes or No.
If you select
Yes all personal data are
then deleted from the phone book.
Opening the phone book
h
Name.
Entries in the phone book are displayed
in alphabetical order. The smart speller
is active and appears near the bottom
of the display.
You can use the smart speller to reduce
the number of entries you need to make.
iThese entries are retained even if you use
the audio system with another mobile phone.
You should delete these entries before handing
over or selling your vehicle.
iIf you switch to a different mode while
vCards are being received (e.g., press
buttonb), reception of vCards will be abort-
ed.
iSelect Back or switch to a different mode to
abort reception.


234 Controls in detail
Audio system
Switching from the search speller to
the list: Slideqmrepeatedly or press
and holdn until the search speller is
hidden.
or
Selectd.
Switching from the list to the search
speller: Press buttoní.
Selecting an entry
Selecting via search speller
Switch if necessary from the list to the
search speller.
To switch search speller character
set: Select#.
Depending on the previous setting, this
switches it to letters with special char-
acters or numbers with special charac-
ters
To enter characters: Slideompor
rotateymz the audio controller to se-
lect the characters for the required en-
try.
The first letters you enter determine
the first letters of the word you are
looking for.
Press n to confirm.
The first entry containing the selected
initial letters is highlighted in the list. If
there are a number of similar entries,
the next different character is
displayed.
Example:
In the example, the first letters of the
names
Fisher, Bob and Fisher, Kim are
the same. The first possible distinct letter
is the
B or the K.
Therefore,
B and K are offered as possibili-
ties.
Select the characters for the required
entry one after another.
As soon as the selection has been nar-
rowed down to a single entry, the audio
system will switch to the list automati-
cally.
To delete an individual character:
Selectõ and briefly pressn.
or
Press buttonî next to the audio
controller.
After entering each character or after
each deletion of a character, the clos-
est matching entry is given at the top of
the list.


235 Controls in detail
Audio system
To delete an entire entry:
Selectõ and press and holdn un-
til the entire entry has been deleted.
or
Press and hold î until the entire en-
try has been deleted.
Ending search: Switch from the
search speller to the list.
The top list entry is highlighted auto-
matically.
Selecting via list
Switch if necessary from the search
speller to the list.
Slideqmror rotateymz the audio
controller until the desired entry is
highlighted.
Press n to confirm and a call will be
initiated.Displaying details on an entry
The audio system can also fully display an
abbreviated entry.
Select entry.
Slidemp to select Options.
Press n to confirm.
Select Details.
A screen with the details of the select-
ed entry appears.
To close details screen: Slideqmr,
or omp, or rotateymz, or press
buttonî.Deleting entry
Select entry
Slidemp to select Options.
Press n to confirm.
Select Delete.
You will be prompted to confirm that
you really want to delete the entry.
Select Yes or No.
If you select
Yes the actual entry is de-
leted from the phone book.