Page 97 of 227

88 Telephone*Important notesIn chapter “Telephone”, you will find de-
tailed information regarding the telepho-
ne*, including emergency call.
1 Observe all legal requirementsWarning
G
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a ve-
hicle. Whether or not prohibited by law, for
safety reasons, the driver should not use the
cellular telephone while the vehicle is in mo-
tion. Stop the vehicle in a safe location be-
fore answering or placing a call.
If you nonetheless choose to use the cellular
phone while driving, please use the hands-
free device and be sure to pay attention to
the traffic situation at all times. Use the cel-
lular phone
1 only when road, weather and
traffic conditions permit.
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e.
without being connected to an external an-
tenna) from inside the vehicle while the en-
gine is running. Doing so could lead to
malfunction of the vehicle’s electronic sys-
tems, possibly resulting in an accident and
personal injury.
!Radio transmitters, such as a portable
telephone or a citizens band unit
should only be used inside the vehicle
if they are connected to a separate ex-
terior antenna that has been approved
by Mercedes-Benz.
Important notes
Page 98 of 227

89 Telephone*
Important notes
iIf you have a Mercedes-Benz specified
integrated mobile telephone (TDMA/
CDMA or GSM) and the telephone is
inserted in the cradle, the telephone
functions can be used as follows:
at the COMAND
at the multifunction steering wheel
with the Voice control system*
This instruction manual describes the
operation at the COMAND. Unless
otherwise indicated, the descriptions
and illustrations refer to the COMAND.
Operation at the mobile phone and
operation with the Voice control
system* are described in separate
operating guides. Refer to the vehicle
Operator's Manual for operation of the
telephone using the multifunction
steering wheel.
iIn certain menus, the COMAND can
display date and time of the calls.
The COMAND can display phone
number and name of the other party
(e.g. if the COMAND detects an
incoming call, but also in other menus).
For the number to be displayed, the
number information must be
transmitted with the incoming call. The
same goes for the name display which
additionally requires that the caller’s
number and name are saved in the
phone book.
Page 99 of 227

90 Telephone*Important notes
Please read the chapter “Telephone”
first before attempting to operate your
telephone.
Please also read the important notes in
the telephone and Voice control sys-
tem* operating manuals.
Always drive with extreme caution
when you operate the telephone
hands-free.
For safety reasons, you should not use
the mobile telephone handset to make
a call while driving the vehicle.
If the signal strength is very weak (dis-
play in the symbol bar of all menus):
Wait until reception improves before
making a call.
Close the windows and reduce all out-
side noise as much as possible when
you use hands-free operation.
Also make sure that the air vents are
not pointed in the direction of the
microphones located in the overhead
control panel near the rear view mirror.
Adjust air vents and/or reduce blower
speed if necessary.
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
Enter Lock Code
for Cell
appears, enter the unlock
code to enable all telephone functions
(
page 92). If you do not do so, only
the emergency call (911) is available.
GSM mobile phone
If the message
Enter PIN:
on the
mobile phone appears, enter the PIN-
code to enable the telephone functions
(
page 92). If you do not do so, only
the emergency (911) call is available on
the mobile phone.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 Serv.
appears in the
status bar. The telephone will try to re-
gister 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 Service Unavailable
appears
for 8 seconds)
Page 100 of 227
91 Telephone*
Important notes
The message
Activating Telepho-
ne. 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
Telephone
Unavailable
or
Telephone
Not
Inserted
appears.
Please connect the mobile phone.
One of the two messages
Telephone
Error
or
Telephone
Not In-
stalled
appears.
Please contact an authorized
Mercedes-Benz Center.GSM mobile phone
If the message
Check SIM Card
(Emergency Call “911” Only
Possible With Tel.)
:
Insert the SIM card into the mobile
phone (Telephone Operating
Manual).
Page 101 of 227
92 Telephone*Telephone operationAutomatically
The telephone* is automatically activated
when the COMAND is switched on. The
mobile phone must be inserted in the
mobile phone cradle* at the time
COMAND is switched on.
Manually
Press a.
The menu to enter the unlock code
(page 95) will appear (only if phone
has been locked before).GSM mobile phone:
Enter the PIN on the mobile phone.
If no SIM card is in the telephone,
the message
Check
SIM
Card
ap-
pears.
Insert a SIM card. Refer to the mo-
bile phone operator’s manual.
Switch the COMAND off (
page 23) or
turn off the engine.
The telephone* is switched off with a
time-lag of around 1 minute. If you
make a call within that time, the
telephone will be switched off around 1
minute after you end the call. or
In the Telephone menu (
page 94),
press a longer than two seconds.
The message
Deactivating Tele-
phone
will appear.
Switching telephone operation on
Switching telephone operation off
Telephone operation
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93 Telephone*
Telephone operation
You 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.
TDMA/CDMA mobile phone
The emergency call will also be placed
if the phone is locked (
page 94).
GSM mobile phone
If no SIM card is in the phone or SIM
PIN is not entered, you can only make
an emergency call at the mobile phone.
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.
If you cannot make an emergency call, you
must initiate rescue measures yourself.
Emergency call “911”iThis function places a call to the local
911 provider. It does not initiate a
Tele Aid* call.
Warning
G
The 911 emergency call system is a public
service. Using it without due cause is a cri-
minal offense.
Page 103 of 227
94 Telephone*Telephone operationInitiating an emergency call
Telephone is locked
Press the
911
soft key.
The system opens an inquiry menu
prompting if you want to dial a “911”
call.
The selection marker in the inquiry
menu should be on
Yes
.
If necessary, press H to select Yes
.
Press E to confirm
Yes
if you want to
place the “911” emergency call.
The emergency call will be placed.
Wait until the emergency rescue
station answers and describe the
emergency.
If you do not want to place the emergency
call:
Press h to select
No
when the
inquiry menu appears.
Press E to confirm
No
. Telephone is ready for operation
Press a repeatedly until the
telephone menu is displayed.
Press 9, 1 and 1 one after the
other.
Press E.
The emergency call will be placed.
Wait until the emergency rescue
station answers and describe the
emergency.
Page 104 of 227

95 Telephone*
Telephone operation
Entering the unlock code
Use the number keys 1 through 0
to enter the four-digit unlock code.
Asterisks instead of digits will appear in
the input line.
Press the
OK
soft key.
If entered code is correct and the pho-
ne is registered in a network, the phone
is ready for use.GSM mobile phone
Entering the PIN code
Enter the four-digit PIN code on the
mobile phone. Refer to the mobile pho-
ne operator’s manual on how to do this.
If no SIM card is in the telephone, the
message
Check
SIM
Card
appears.
Insert a SIM card. Refer to the mo-
bile phone operator’s manual.
Entry incorrect:
You will hear a warning sound.
You need to re-enter your PIN code.
Entering codes
iYour unlock code prevents unauthori-
zed persons from using your telephone.
B e s u re t o m em o ri z e t hi s c o d e , a f o u r d i -
git number, carefully.
If you enter an incorrect code, the sys-
tem returns to the menu for entering the
unlock code.iYou must always enter the unlock code
when you switch on the telephone the
first time (if phone is in locked mode). Warning
G
When in the enter lock code screen, the
emergency number 911 (default input) will
be dialed if you press “1” longer than 2 se-
conds.
The 911 emergency call system is a public
service. Using it without due cause is a cri-
minal offense.
!If the PIN is entered incorrectly three
times in a row, the SIM card will be
blocked. The message
PIN Blocked
is displayed briefly. After that the
message
Please Enter PUK on
Cell Phone
is displayed.