2003 MERCEDES-BENZ C-Class Cd Operation

61 Audio
CD operation
“Being activated”
The CD changer is not yet ready for opera-
tion.
“Reading error”
The CD that has been inserted cannot be
read.
“Temperature is too high”
CD operation will switch off automatically
after 3 seconds.
Press the corresponding key to select a
different audio source.
“Error”
Another error has occurred.
iIf an error occurs in the operation of the
CD drive or CD changer, COMAND auto-
matically switches to the other device
after 3 seconds.
If it is not possible to play the CD selec-
ted in the CD changer, the system will
automatically select the next CD in the
magazine.

62 AudioCD operation1No audio source has been switched on
2CD unit is switched on
3If the CD changer is switched on, the
number of the CD currently playing ap-
pears
4Track number

Press d on COMAND.
CD unit is switched on.

Press E or H repeatedly until
display 2 appears.

Press F or G until the desired
track number 4 appears.

Press E or H to display the next
or previous system.
Multifunctional display

64 AudioSound settings
Turn the right-hand rotary/push-button
v to highlight “Sound“ in the main
menu for radio or CD operation and
press to confirm.
The main sound menu will appear dis-
playing the actual settings.For service sources
1Volume difference
Set the difference between voice out-
put during route guidance and an acti-
ve audio source
“0” The volume of the audio source
is not affected during voice out-
put.
“10” The audio source is set very low
during voice output.

Turn the right-hand rotary/push-button
v to highlight “Settings” in the main
destination input menu (
page 122)
and press to confirm.
The “NAVI Settings” menu will appear
(
page 181).

Turn the right-hand rotary/push-button
v to highlight “Sound” and press to
confirm.
The “Speech Bass/Treble” menu will
appear.
iIt is also possible that “AM Bass/Treb-
le”, “WB Bass/Treble”, “CD Bass/Treb-
le” or “AUX Bass/Treble” are indicated
in 1.
Fader defines sound-center front/
back
Balance defines sound-center left/
right
iNo predefined sound optimizations are
available for service sources.
During adjustment in the “Speech
Bass/Treble” menu, COMAND will is-
sue a repetative voice output of “Samp-
le” to allow you to set the settings as
you prefer.

65 Audio
Sound settings
Setting Bass/Treble/Fader/Balance
1Setting mode active
Turn the right-hand rotary/push-button
v to move the cursor to the parameter
you want to adjust and press to con-
firm.
The setting mode is active. The activa-
ted sound parameter is shown in red.

Turn the right-hand rotary/push-button
v to set the desired value.

Press the button.
The value is set. The sound feature is
shown in black.Reset the Settings to “0”

Turn the right-hand rotary/push-button
v to highlight “Reset” and press to
confirm.
COMAND sets treble and bass to “0”
and sets the sound-center into the
middle of the vehicle.
Return to the main audio menu

Press *.iThe sound-center adjustments affect
the settings for the radio (FM/AM/WB)
and CD operation.
Adjustments which are made to the na-
vigation system will affect the voice re-
cognition system and the telephone.

67 Telephone
Important notes
Multifunction display
Telephone operation
SMS function
Emergency call
Service numbers

69 Telephone
Important notes


Close the windows and reduce all out-
side noise as much as possible when
you use hands-free operation.


A brief disconnection from the cellular
network is not a malfunction, as this
can occur when the network switches
areas. The phone will automatically try
to sign on to a network again.


If the message “Locked. Please enter
code” appears, enter the unlock code
to enable all telephone functions
(page 78).


If a menu other than the telephone
menu is displayed on the COMAND
screen, the display will change if an
outgoing call is sent out via the multi-
function steering wheel.In the following situations, it is not possible
or not yet possible to use the telephone:


The telephone is already unlocked but
is not or not yet registered in the net-
work.
The message “No Service” appears.
The telephone will try to register into
an existing network. If the network is
available, the telephone will be ready
for use.
The above message also appears

if the network is no longer available
due to weak signals


if you try to make a call (message
appears for 8 seconds)


The message “Telephone is being acti-
vated. Please wait.” appears.
COMAND prepares the telephone for
use. Select other system functions, e.g.
radio, by pressing the corresponding
button or wait until the telephone is ac-
tive.


One of the two messages “No telepho-
ne” or “Telephone not connected” ap-
pears.
Please connect the telephone.


The message “Telephone defective”
appears.
Please contact an authorized
Mercedes-Benz Center.

70 TelephoneImportant notesIn the following situation, it is not yet pos-
sible to use the functions “Dial number
from phone book”, “Redial” and
“Speed-dial”:

The mobile telephone has been
plugged into its holder correctly, the
COMAND operating unit has been swit-
ched on and the phone book download
function has been actuated (see tele-
phone operation guide).
Once the download process has been
completed, the above functions be-
come available. It is not possible to make a call when one
of the following messages appears:


“System busy, redial?”
Dialing has failed because system is
busy.


“No service, redial?”
Dialing has failed because network
cannot received.


“Phone off”
Tele Aid is active, the telephone func-
tion will switch on automatically after
Tele Aid is ended.

74 TelephoneTelephone operation
Telephone operationQuick reference