wheel MERCEDES-BENZ C-Class 2004 W203 Comand Manual
Page 18 of 243
11 At a glance
Multifunction display
 Multifunction display
The starter switch must be in position 1 or 
2. Refer to vehicle operating instructions.
You can operate the following systems 
with steering wheel buttons 4 and 5:
Radio
CD (CD changer and CD drive)
Auxiliary audio source, e.g. tape recor-
der (
page 218)
Telephone
For more detailed information, refer to 
“Multifunction display” in the chapters dis-
cussing the radio, CD, and telephone ope-
ration.
1
2
5
3
4
P82.85-9290-31
Function
1
Multifunction display in speedo-
meterOperating the control system
2
Adjusting the volume
I lowers the volume
J raises the volume
3
Making a call
K Accept incoming call or 
starts dialing
L End a call or end Tele Aid
4
Switching between menu sys-
tems
E next system
H previous system
5
Moving within a menu system
F next display
G previous displayFunction 
Page 21 of 243
14 At a glanceQuick reference COMANDAt the multifunction steering wheel
To raise the volume
Press J. 
To lower the volume
Press I.
At the COMAND operating unit
Turn the the left-hand rotary/push-
button v.
For the audio sources
Radio
CD (CD drive and CD changer)
you can set the volume jointly.For the service sources
Voice output during route guidance 
(navigation system)
and
Voice Control System (refer to separa-
te operating instruction)
you can set the volume jointly.
For the service source 
Telephone 
you can alter the listening volume for the 
telephone only.
Switching on
Press c.
The radio is switched on. The station 
last tuned to will begin to play.
Changing the radio band
Press c to switch between FM-, 
AM- and WB-Band.
Adjusting the volume 
Radio operation
P82.85-6062-31 
Page 37 of 243
30 AudioRadio operationYou can use the following functions:
Automatic seek tuning (
page 30)
Seek tuning at the multifunction stee-
ring wheel (
page 31)
Manual tuning (
page 31)
Station selection via number keypad 
(presets) (
page 32)
Station selection via direct frequency 
entry (
page 32)
Automatic station scan (
page 33)
Station selection from the preset menu 
(page 38)Automatic seek tuning
Press g or h on the rocker 
switch briefly.FM- and AM-Bands, Weather Band WB
The radio will tune in to the next receivable 
station (FM, AM) or channel (WB) with de-
scending/ascending frequency depending 
on the direction of seek.
WB
Alternatively, you can select the channel 
directly:
Press a number key 1 through 7.
Selecting a station 
P82.85-9080-31 
Page 38 of 243
31 Audio
Radio operation
Seek tuning at the multifunction stee-
ring wheel
If the multifunctional display shows the 
station frequency, then:
Press F or G to select a higher/
lower frequency preset.Manual tuning (FM, AM)
Press g or h on the rocker 
switch longer than 2 seconds.
The menu fields will appear in light grey 
lettering.FM Band
The frequency displayed will change in in-
crements of 0.2 MHz.
AM Band
Tuning will take place in increments of 
10 kHz.
iThe up/down arrows have different 
functions depending on which mode the 
seek function in the multifunction dis-
play is programmed to.
The two available options are Memory 
Scan or Frequency Scan (Station 
search). Refer to the vehicle operator’s 
manual on how to program this option.
P82.85-9081-31
iActivating the AM Band (
page 29). 
Page 47 of 243
40 AudioRadio operation1No audio source has been switched on
2The radio is switched on
3Frequency band and the memory pre-
set, if applicable
4Frequency of the station selected5“SP” (memory) - appears if “Memory” 
instead of “Station search” or “Freq.” 
(depending on model) has been selec-
ted in the “Vehicle” submenu. Refer to 
“Control system” in chapter “Controls 
in detail” in your vehicle's operating in-
structions for further information. 
Press # at the COMAND control 
unit to switch on COMAND.
Press c at the COMAND control 
unit to switch to radio operation.
Repeatedly press key E or H at 
the multifunction steering wheel until 
display 2 appears.
Multifunction display 
Page 48 of 243
41 Audio
Radio operation
Repeatedly press F or G at the 
multifunction steering wheel until the 
desired station frequency appears.
Press E or H at the multifunc-
tion steering wheel to display the next 
or previous system. 
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 104 of 243
97 Telephone*
Telephone operation
If the phone memory has been downloa-
ded to COMAND, the menu fields “Phone 
Book”, “Last Calls” and “Calls” will be avai-
lable. 
If the memory was not downloaded, the 
menu fields will be dimmed out.
Outgoing calls (
page 100).
Use one of these ways
When the telephone is connected to 
the coiled cord, press a on the 
COMAND control unit. 
or
When the telephone is in portable mo-
de, press # on the phone.Accepting the call at the multifunction 
steering wheel
1CALL
The system detects an incoming call, 
the phone rings
2Reception strength
The more bars appear, the stronger the 
signal of the cellular networkAccepting a call
Press K.
Audio source is automatically muted.
Ending a call
Press L.
The main telephone display appears.
Switching telephone operation off
Incoming call
iYou can also accept a call, if another 
display, e.g. navigation, is shown on the 
multifunction display.iCommunication between the multifunti-
on display and the COMAND screen:
If different systems appear, the changes 
made to COMAND will have no effect on 
the driver information display.
Press the COMAND key a to 
switch to the telephone functions.   
Page 110 of 243
103 Telephone*
Telephone operation
Dialing a number from the phone book
Dialing using the multifunction steering 
wheel 
In order to use this feature, the phone 
book must have previously been downloa-
ded to the COMAND memory. This is per-
formed automatically each time the 
portable phone is connected to the coiled 
cord.
The telephone is ready for operation 
(page 96).
Press E or H as often as neces-
sary until the telephone mode appears 
in the multifunction display.
If ENTER CODE
 appears, enter your unlock 
code first (
page 96).
The message NO ENTRY
 appears when the 
portable phone has been put into the crad-
le and no entries are stored in the phone 
book.
Press F or G.
You are paging the phone book back-
wards or forwards in alphabetical or-
der. Name and memory location 
appear.
or
Press F or G longer than 2 se-
conds.
You are scrolling through the phone 
book very quickly.
The name that is selected appears in 
the display.iIf you do not wish to place a call, press 
L. The process will be cancelled and 
the message 
READY
 appears again. 
Page 116 of 243
109 Telephone*
Telephone operation
RedialDialing using the multifunction steering 
wheel1The telephone is ready for operation.
2Number in the redial memory
3Number in the redial memory, dialing 
has begun4Dialing is completed. Name or still the 
dialed number (name has not been sa-
ved).
5Reception strength - the more bars ap-
pear, the stronger the signal of the cel-
lular network received6Memory location number, the last 10 
dialed telephone numbers are stored
L01, number dialed last
L01 to L10, numbers dialed previously 
7Call time