2006 MERCEDES-BENZ C280 buttons

225 Controls in detail
Audio system
GSM network phones
Using your Mercedes-Benz specified
mobile telephone*, a number of functions
and operating steps can be performed and
displayed in the audio system display.
Further operating instructions not covered
here can be found in the operating instruc-
tions for the multifunction steering wheel
and the cellular telephone*.
I f y o u r a u d i o s y s t e m i s s e t u p f o r t e l e p h o n e
operation, the tsymbol will appear in
the display.
When you insert your Mercedes-Benz
specified mobile telephone* into the
telephone cradle, you will be prompted to
enter your PIN for 30 seconds
(page 225). This display disappears
when you press any button.
When your mobile telephone is inserted
into the telephone cradle, you will see the
reception strength in the upper right-hand
corner of the display.Switching on the telephone
Switching on the telephone

Pressh button.
If the telephone was previously
switched off,
PROCESSING
appears in
the display and you will then be
prompted to enter your PIN.
Switching off the telephone

Pressh button for approx.
3 seconds.PROCESSING
appears in the display until
the telephone is off. Afterward,
PHONE OFF
appears in the display.PIN entry

Enter PIN number using buttons 1
to R.

If necessary, correct number entered
with the
CLR
soft key. Press soft key
briefly to delete the last digit entered;
press soft key and hold to delete the
complete number.

Press
OK soft key after entering correct
PIN.

READY
or
ROAMING
will appear in the
display.

226 Controls in detailAudio systemAdjusting the volume
Turn rotary control of N button
during a telephone call.
The volume will increase or decrease
depending on the direction turned.
Adjusting sound

Adjust sound during a telephone call.
Sound adjustment (
page 203).Placing a call
Entering a telephone number and
starting the dialing process

Enter desired telephone number using
buttons 1 to R.
The number can have up to 32 digits,
but only twelve of these are visible in
the display.

If necessary, correct number entered
with the
CLR
soft key. Press soft key
briefly to delete the last digit entered;
press soft key and hold to delete the
complete number.

After correct telephone number has
been entered, press s button.
Phone book
The numbers stored in the phone book of
the telephone can be called up either by
name or number.
In addition, incoming calls are stored in the
phone book.
iIf the PIN is entered incorrectly three
times,
NEED PUK
will appear in the
display. Enter PUK via your telephone.
Please refer to the separate telephone
operating instructions for more
information.
iThe volume can be adjusted separately
for telephone mode and audio mode.
iIf the telephone number has been
saved together with a name in the
telephone book, the name will appear
in the display.

228 Controls in detailAudio system

When you have selected a number,
press s button.
The call will be made.


Viewing the telephone number of a
telephone book entry
Search for desired entry.

Press
NUM
soft key.
The telephone number of the phone
book entry appears in the display.


Returning calls received

Press
MEM
soft key or press
button‚ orƒ.

Press
RCV
soft key (received calls).
The number of received calls and
then the call last received appear
briefly in the display.

Select desired telephone number
with button ‚ or ƒ.
The letter
R and the number of the
memory position appear in the
upper left-hand corner of the
display. The numbers are stored in
the order of the calls received.

When you have selected a number,
press s button.
The call will be made.


Speed dial
If you have stored telephone numbers
as speed dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
head unit.
Press desired button 1 to R
briefly.

Press s button.
The call will be made.


Turbo dial
If you have stored telephone numbers
as turbo dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
head unit.
Press desired button 1 to R
until the call is made.


230 Controls in detailAudio systemMuting a call
It is possible to mute a call; the caller is
then no longer able to hear you.

Mute on
Press
MUT
soft key.

MIC MUTE
will appear in the display.


Mute off
Press
MUT
soft key again.
Terminating a call

Press t button.
The current call is terminated and the
muted audio source becomes active
again.Talking with two callers at the same
time
If you wish to receive or place another call
during an already active call, you can
accept or place the second call and switch
between the callers or combine them into
one call. Note that the features described
here are depending on availability from
your mobile phone service provider.


Placing/accepting a second call
Place new call by entering
telephone number manually.

Press s button.
You are connected to the second
caller; the first caller is kept on
hold.
or

Press s button to accept a
second call.
You are connected with the second
caller; the first caller is kept on hold.


Switching between calls
Press 2 and s buttons.
This switches between the calls.
The non-active call is kept on hold.
iYou will be notified of the second call
acoustically, but you will not see this in
the display.

231 Controls in detail
Audio system


Terminating a call
Press t button.
The current call is terminated. You
are again connected with the caller
previously placed on hold.


Combining two calls
Press 3 and s buttons.
The calls are combined into one
call.


Terminating a combined call
Press t button.
The connection to both callers is
terminated.
TDMA or CDMA network phones
Using your Mercedes-Benz specified
mobile telephone*, a number of functions
and operating steps can be performed and
displayed in the audio system display.
Further operating instructions not covered
here can be found in the operating instruc-
tions for the multifunction steering wheel
and the mobile telephone*.
If your audio system is set up for telephone
operation, the t symbol will appear in
the display.
When you insert your Mercedes-Benz
specified mobile telephone* into the
telephone cradle, you will be prompted to
enter your PIN for 30 seconds
(page 231). This display disappears
when you press any button.
When your mobile telephone is inserted
into the telephone cradle, you will see the
reception strength in the upper right-hand
corner of the display.Switching on the telephone
Switching on the telephone

Press h button.
If you have programmed an unlock
code for the telephone, you must now
enter the code.

Enter code using buttons 1
toR.

If necessary, correct number entered
with the
CLR
soft key. Press soft key
briefly to delete the last digit entered;
press soft key and hold to delete the
complete number.


232 Controls in detailAudio system
Press
OK soft key after entering correct
code.
The telephone is unlocked. If you have
entered an incorrect code, you must
enter the correct code.
Switching off the telephone

Press h button for approx.
3 seconds.PROCESSING
appears in the display until
the telephone is off. Afterward,
PHONE OFF
appears in the display.
Adjusting the volume

Turn rotary control of N button
during a telephone call.
The volume will increase or decrease
depending on the direction turned.Adjusting sound

Adjust sound during a telephone call.
Sound adjustment (
page 203).
Placing a call
Entering a telephone number and
starting the dialing process

Enter desired telephone number using
buttons 1 to R.
The number can have up to 32 digits,
but only twelve of these are visible in
the display.

If necessary, correct number entered
with the
CLR
soft key. Press soft key
briefly to delete the last digit entered;
press soft key and hold to delete the
complete number.

After correct telephone number has
been entered, press s button.
Phone book
The numbers stored in the phone book of
the mobile telephone can be called up
either by name or number.
In addition, incoming calls are stored in the
phone book.
iThe volume can be adjusted separately
for telephone mode and audio mode.
iIf the telephone number has been
saved together with a name in the
phone book, the name will appear in
the display.


234 Controls in detailAudio system

When you have selected a number,
press s button.
The call will be made.


Viewing the telephone number of a
phone book entry
Search for desired entry.

Press
NUM
soft key.
The telephone number of the phone
book entry appears in the display.


Returning calls received

Press
MEM
soft key or press
button‚ orƒ.

Press
RCV
soft key (received calls).
The number of received calls and
then the call last received appear
briefly in the display.

Select desired telephone number
with button ‚ or ƒ.
The letter
R and the number of the
memory position appear in the
upper left-hand corner of the
display. The numbers are stored in
the order of the calls received.

When you have selected a number,
press s button.
The call will be made.


Speed dial
If you have stored telephone numbers
as speed dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
unit.
Press desired button 1 to R
briefly.

Press s button.
The call will be made.


Turbo dial
If you have stored telephone numbers
as turbo dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
unit.
Press desired button 1 to R
until the call is made.


264 Controls in detailUseful featuresTelephone*
Radio transmitters, such as a portable tele-
phone or a citizens band unit, should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Center for informa-
tion on the installation of an approved
external antenna. Refer to the radio trans-
mitter operation instructions regarding use
of an external antenna.You can take and place telephone calls
using thes andt buttons on the
steering wheel. To carry out other tele-
phone functions, use the control system
(
page 157).
See separate operating manual for instruc-
tions on how to use the telephone.
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 personal
injury.
Warning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his/her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
cellular telephone while driving a vehicle.
Only operate the COMAND* (Cockpit Man-
agement and Data System)
1 if road, weather
and traffic conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
1Observe all legal requirements.