Service MERCEDES-BENZ C-Class 2004 W203 Comand Manual
Page 94 of 243
87 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 96).
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. 
Page 95 of 243
88 Telephone*Important 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 be received.
“Phone off”
Tele Aid is active, the telephone func-
tion will switch on automatically after 
Tele Aid is ended. 
Page 102 of 243
95 Telephone*
Telephone operation
Function
Page
1
Main telephone menu
96
2
Telephone system is active 
96
3
Accepting a call using 
COMAND 
Begin dialing
98
101
4
Ending a call
102
5
Microphone mute
98
6
Reception strength is indica-
ted by up to 5 bars for a con-
nected and functional 
telephone
M   Incoming SMS mes-
sage
RM   ROAM indicator
RM in black - using a 
home type system
RM in red - using a non 
home type system
121
121
Function
Page
7
Input line
8
Alphabet to enter the name
117
9
Menu fields to activate sub-
menus
98
a
“Phone book” selection menu
is activated when the input 
line 7 is empty
Phone book with names
is activated according to input 
of up to 3 letters
105
105
b
Main telephone menu with 
other menu fields is activated 
via the symbol “V”
c
SMS list
Reading or deleting an SMS 
message
122
d
“Service Number” menu 
Selecting a service number 
for an outgoing call or chan-
ging a service number
126
Function
Page
e
Notebook, noting a telephone 
number
Dialing from the notebook
115
115
f
“Calls” function
The last incoming calls are 
stored
112
g
Redial memory, the last 10 
numbers (L01-L10) dialed are 
stored
L01  last number or 
name dialed
L01-L10  numbers or names 
dialed previously
111
111
h
Telephone menu for entering 
telephone numbers
Switch back to the main tele-
phone menu via the “ABC/
123” menu field
100 
Page 120 of 243
113 Telephone*
Telephone operation
Speed-dialing (only with COMAND)
For all memory locations
You can enter up to 2 digits
The main telephone menu is displayed
Use the number keys, e.g. 1 and 4 to 
enter the memory location number. Begin dialing
Use one of these ways
Press the last number key for more 
than 2 seconds.
or
Press the right-hand rotary/push-
button v to confirm the “Send” but-
ton.
The phone number or name will appear 
in the menu. The telephone will dial the 
phone number that has been stored in 
this memory location.
When the call is initiated, the call time 
will appear.
P82.85-9140-31
Warning
G
If you enter “1” and confirm this memory lo-
cation using one of the described ways in 
“Begin dialing”, the emergency number 
9-1-1 (default input) will be dialed.
The 9-1-1 emergency call system is a public 
service. Using it without due cause is a cri-
minal offense.
P82.85-9141-31 
Page 121 of 243
114 Telephone*Telephone operation
Ending a call (
page 112).Quick-dialing for the first 10 memory 
locations
The main telephone menu is displayed
Press 2 to 0 longer than 2 seconds.
The phone number or name will appear 
in the menu. The telephone will dial the 
phone number that has been stored in 
this memory location.
When the call is initiated, the call time 
will appear.
Ending a call (
page 112).
iIf the memory location called is free, the 
message “Memory location not alloca-
ted” will appear.
P82.85-9142-31
Warning
G
If you press “1” the emergency number 
9-1-1 (default input) will be dialed.
The 9-1-1 emergency call system is a public 
service. Using it without due cause is a cri-
minal offense. 
Page 131 of 243
124 Telephone*Emergency call
 Emergency callYou can make an emergency call to an 
emergency rescue station with a mobile 
communication network.
The emergency call will be placed as long 
as the corresponding mobile communicati-
on network is available. To do this, switch 
the telephone on if you have not already 
done so.
Emergency calls may not be possible with 
all mobile phone networks or if certain net-
work services and/or telephone functions 
are active. Check with your local network 
operating company.
iThe emergency call will also be placed if 
the phone is locked.iThis function places a call to the local 
9-1-1 provider. It does not initiate a Tele 
Aid call.
Warning
G
The 9-1-1 emergency call system is a public 
service. Using it without due cause is a cri-
minal offense.!If you enter “1” and press the right-
hand rotary/push-button v, the num-
ber stored in memory location “1” (de-
fault is 9-1-1) will be dialed.
Pressing or holding “1” longer than 2 
seconds will also initiate the call.
!It will not be possible to complete the 
emergency call if the cellular system is 
busy. The message “System busy, 
redial?” appears.
Take appropriate measures to alert an 
emergency service as soon as possible. 
Page 133 of 243
126 Telephone*Service numbers
 Service numbers1Personal Service Number
2Number for Roadside Assistance
Turn the right-hand rotary/push-button 
v to highlight “Service No.” in the 
main telephone menu and press to 
confirm.
The menu “Service No.” will appear.
Use the right-hand rotary/push-button 
v to highlight the service you require 
and press to confirm.
The main telephone menu will appear.Begin dialing
Press the right-hand rotary/push-
button v to confirm the “Send” but-
ton. 
One of the messages “Personal Service 
Number” or “Roadside Assistance” will 
appear. The “End” button is highligh-
ted.
When the call is initiated, the call time 
will appear.
Use one of these three ways to end a call
Press the right-hand rotary/push-
button v to confirm the “End” button.
or
Press a.
or
Press *.
Calling a service number
P82.85-9156-31
12 
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127 Telephone*
Service numbers
Turn the right-hand rotary/push-button 
v to highlight “Change 1” in the 
“Service No.” menu and press to con-
firm.
The “Change Service No. 1” menu will 
appear.
Enter the new service number with 
number keys 1 through 0.
Press the right-hand rotary/push-
button v to confirm the service num-
ber.
The new service number is now stored 
in the “Service No.” menu.
Returning to the menu “Service No.”
The menu “Service No.” will appear auto-
matically after 7 seconds
or
Press *.
Changing personal service number
P82.85-9157-31
iPressing the right-hand rotary/push-
button v and inserting an empty input 
line will delete the personal service 
number. 
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128 Telephone*Service numbers
Turn the right-hand rotary/push-button 
v to highlight “Change 2” in the 
“Service No.” menu and press to con-
firm.
The “Change Service No. 2” country list 
will appear.Select a new country service number from 
the list
Turn the right-hand rotary/push-button 
v to highlight the country abbreviati-
on  you want and press to confirm.
The new service number is now stored 
in the “Service No.” menu.
Returning to the menu “Service No.”
The menu “Service No.” will appear auto-
matically after 7 seconds
or
Press *.
Changing the number for Roadside 
Assistance
P82.85-9158-31 
Page 138 of 243
131 Navigation
Important notes
Warning
G
The CD reader contains a Class 1 laser pro-
duct. There is a danger of invisible laser ra-
diation if the cover is opened or damaged.
Do not remove the cover. The CD reader 
does not contain any parts which can be ser-
viced by the user. For safety reasons, have 
any service work which may be necessary 
performed only by qualified personnel. 
!COMAND calculates the route with the 
help of data that is stored on the navi-
gation CD.
Only use Mercedes-Benz navigation 
CDs. Using other navigation CDs might 
lead to malfunctions.
Because of changes in local traffic pat-
terns (e.g. road works) and/or incom-
plete data, errors in calculation may 
occur. 
As a result, the recommended route 
may deviate from the ideal route. The 
data stored on the CD only reflects lo-
cal conditions at the time of CD pro-
duction.
iThe CD drive can read navigation CDs 
and playback audio CDs.
If an audio CD is in the CD drive and 
b is pressed, the message “No CD 
available. Insert NAVI-CD type DX only” 
will be displayed.
Remove the audio CD and insert a 
navigation CD (
page 137).