2005 MERCEDES-BENZ C WAGON phone

212 Controls in detailAudio system

Switching between calls
Press s button.
This switches between the calls.
The non-active call is kept on hold.


Terminating a call
Press t button.
The current call is terminated. The
connection to the caller previously
kept on hold is also interrupted;
however, reconnection is indicated
by an acoustic signal.Placing a second call
If you wish to place another call during an
already active call, you can place the
second call and switch between the callers
or combine them into one call. Note that
this feature is depending on availability
from your mobile phone service provider.


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

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


Terminating a call
Press t button.
The current call is terminated. The
connection to the caller previously
kept on hold is also interrupted;
however, reconnection is indicated
by an acoustic signal.


Combining two calls
Press s button.
The calls are combined into one
call.


Terminating a combined call
Press t button.
The connection to both callers is
terminated.

213 Controls in detail
Audio system
Emergency calls “911”
The following describes how to dial a “911”
emergency call using the audio system
head unit when a Mercedes-Benz specified
mobile phone* is inserted in the phone
cradle*. Unless otherwise specified, the
descriptions refer to the audio system
head unit.
Consult the separate telephone operating
instructions that came with your mobile
phone* for information on how to place a
“911” emergency call on the mobile
phone*. The following conditions must be met for a
“911” emergency call:


Telephone must be switched on.


The corresponding mobile communica-
tions network must be available.
If you cannot make an emergency call, you
will have to initiate rescue measures
yourself. GSM network phones
Placing a “911” emergency call using
audio head unit with the phone locked

Press hbutton to switch to
telephone operation. PIN?
appears in the audio display.

Enter 911 using the number keypad on
the audio head unit.

Press
OK soft key or sbutton for
dialing to begin.
DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency.
Warning!
G
The “911” emergency call system is a public
service. Using it without due cause is a crim-
inal offense.
iEmergency calls may not be possible
with all telephone networks or if certain
network services and/or telephone
functions are active. Check with your
local service providers.

214 Controls in detailAudio systemPlacing a “911” emergency call using
audio head unit with the phone
unlocked
Press hbutton to switch to
telephone operation.

Enter 911 using the number keypad on
the audio head unit.

Press sbutton for dialing to begin. DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency. TDMA/CDMA network phones
Placing a “911” emergency call using
audio head unit with the phone locked

Press hbutton to switch to
telephone operation. CODE?
appears in the audio display.

Enter 911 using the number keypad on
the audio head unit.

Press
OK soft key or sbutton for
dialing to begin.
DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency. Placing a “911” emergency call using
audio head unit with the phone
unlocked

Press hbutton to switch to
telephone operation.

Enter 911 using the number keypad on
the audio head unit.

Press sbutton for dialing to begin. DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency.
iIf no SIM card is in the mobile phone, NO SERVICE
appears in the audio
display. In that case, you only can make
an emergency call on the mobile phone
itself, without the use of the head unit.

235 Controls in detail
Useful features
Armrest storage compartments
1Handle
2Button, passenger side
3Button, driver’s sideOpening storage compartment

Pull handle1 and lift armrest.
Closing storage compartment

Press armrest down until it engages
into place.
Opening telephone compartment

Press button3 on driver’s side or
button2 on passenger side and lift
armrest.
Closing telephone compartment

Press armrest down until it engages
into place.Changing inclination of armrest
1Handle

Pull up on armrest.
Lowering armrest

Pull handle1 to lower armrest.
!Do not store any items between the
telephone holder and the cover for the
blower. Otherwise these items could
be damaged when the holder is closed.
Use the space in the front door pocket
for stowing.

241 Controls in detail
Useful features
Telephone*
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 148).
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/or serious
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.
Warning!
G
Some jurisdictions prohibit the driver from
using a cellular telephone while driving a
vehicle. Whether or not prohibited by law,
for safety reasons, the driver should not use
the cellular telephone while the vehicle is in
motion.
Stop the vehicle in a safe location before
answering or placing a call.

244 Controls in detailUseful featuresA voice connection between the Response
Center and the occupants of the vehicle
will be established automatically soon af-
ter the emergency call has been initiated.
The Response Center will attempt to
determine more precisely the nature of the
emergency provided they can speak to an
occupant of the vehicle.
The Tele Aid system is available if

it has been activated and is
operational. Activation requires a
subscription for monitoring services,
connection and cellular air time


the relevant cellular phone network
and GPS signals are available and pass
the information on to the Response
CenterInitiating an emergency call manually
1Cover
2SOS button

Briefly press on cover1.
The cover will open.

Press SOS button2 briefly.
The indicator lamp in SOS button2
will flash until the emergency call is
concluded.

Wait for a voice connection to the
Response Center.

Close cover1 after the emergency
call is concluded.
iLocation of the vehicle on a map is only
possible if the vehicle is able to receive
signals from the GPS satellite network
and pass the information on to the
Response Center.
Warning!
G
If the indicator lamp in the SOS button is
flashing continuously and there was no
voice connection to the Response Center
established, then the Tele Aid system could
not initiate an emergency call (e.g. the rele-
vant cellular phone network is not available).
The message
Call failed.
appears in the
multifunction display for approximately ten
seconds.
Should this occur, assistance must be
summoned by other means.

246 Controls in detailUseful features
Information button¡
Located below the center armrest cover is
the Information button¡.
Press and hold button (for longer than
two seconds).
A call to the Customer Assistance
Center will be initiated. The button will
flash while the call is in progress. The
message
Connecting call
will appear
in the multifunction display and the
audio system is muted.When the connection is established, the
message
Call connected
appears in the
multifunction display. The Tele Aid system
will transmit data generating the vehicle
identification number, model, color and
location (subject to availability of cellular
and GPS signals).
A voice connection between the Customer
Assistance Center representative and the
occupants of the vehicle will be
established. Information regarding the
operation of your vehicle, the nearest
Mercedes-Benz Center or Mercedes-Benz
USA products and services is available to
you.
For more details concerning the Tele Aid
system, please visit www.mbusa.com and
use your ID and password (sent to you
separately) to learn more (USA only).
iThe indicator lamp on the Roadside
Assistance button• remains illumi-
nated in red for approximately ten
seconds during the system self-check
after switching on ignition (together
with the SOS button and the Informa-
tion button¡).
See system self-check (
page 243)
when the indicator lamp does not come
on in red or stays on longer than
approximately ten seconds.
If the indicator lamp on the Roadside
Assistance button• is flashing
continuously and there was no voice
connection to the Response Center
established, then the Tele Aid system
could not initiate a Roadside Assis-
tance call (e.g. the relevant cellular
phone network is not available). The
message
Call failed.
appears in the
multifunction display.
Roadside Assistance calls can be
terminated using the tbutton on
the multifunction steering wheel or the
respective button for ending a
telephone call on the audio system or
COMAND* head unit.

247 Controls in detail
Useful features
Upgrade scenario
An emergency call is possible even if other
services are active.
iThe indicator lamp on the Information
button¡ remains illuminated in red
for approximately ten seconds during
the system self-check after switching
on ignition (together with the SOS
button and the Roadside Assistance
button•).
See system self-check (
page 243)
when the indicator lamp does not come
on in red or stays on longer than
approximately ten seconds.
If the indicator lamp on the Information
button¡ is flashing continuously
and there was no voice connection to
the Response Center established, then
the Tele Aid system could not initiate
an Information call (e.g. the relevant
cellular phone network is not
available). The message Call failed.

appears in the multifunction display.
Information calls can be terminated
using the tbutton on the
multifunction steering wheel or the re-
spective button for ending a telephone
call on the audio system or COMAND*
head unit.!If the indicator lamps do not start flash-
ing after pressing one of the buttons or
remain illuminated (in red) at any time,
the Tele Aid system has detected a
malfunction or the service is not
currently active, and may not initiate a
call. Visit your Mercedes-Benz Center
and have the system checked or
contact the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada) as soon
as possible.
!If the indicator lamp continues to flash
or the system does not reset, contact
the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada), or
Mercedes-Benz Customer Assistance
at 1-800-FOR-MERCedes
(1-800-367-6372) in the USA or
Customer Service at 1-800-387-0100
in Canada.