2008 MERCEDES-BENZ R320 service

305 Controls in detail
Useful features
Closing CD changer*
1CD changer
Gently push CD changer 1 up in
direction of arrow until it engages.
For information on CD changer operation,
see separate COMAND system operating
instructions.
Locking and unlocking the glove box
separately
You can lock the glove box separately, e.g.
when the vehicle is in the shop for service.
Take the mechanical key out of the
SmartKey or SmartKey with
KEYLESS-GO* (
page 474).
1Unlocking glove box
2Locking glove box
Insert mechanical key into glove box
lock.
Turn mechanical key to position 2 to
lock the glove box.
Turn mechanical key to position 1 to
unlock the glove box.Storage compartment in front center
console
1Cover
2Chrome label
Tab lightly on chrome label 2 of
cover1.
Cover 1 swings open.
iThe glove box can only be locked or
unlocked with the mechanical key.

319 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 Light Truck Center
for information on the installation of an
approved external antenna. Refer to the
radio transmitter operation instructions
regarding use of an external antenna.When the mobile phone is inserted in the
cradle, you can operate the telephone
using the following devices:

mobile phone keypad

COMAND system (see separate operat-
ing instructions)

buttonss andt on the multi-
function steering wheel (
page 158)

Voice Control System* (see separate
operating instructions)
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,
possibly resulting in an accident and/or
serious personal injury.
Warning!G
Please do not forget that your primary
responsibility 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
recommend that you pull over to a safe loca-
tion and stop before placing or taking a
telephone 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
mobile telephone while driving a vehicle.
Only operate the COMAND 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.
iVarious mobile phone cradles can be
installed in the front center armrest, see
separate installation instructions for the mobile
phone cradle. These mobile phone cradles can
be obtained from an authorized Mercedes-Benz
Light Truck Center.
The functions and services available to you while
using the mobile phone depend on your service
provider and the type of mobile phone you are
using. See also separate operating manual for
instructions on how to use the mobile phone.

324 Controls in detail
Useful features
A voice connection between the Response
Center and the occupants of the vehicle
will be established automatically soon
after the emergency call has been initiat-
ed. The Response Center will attempt to
determine more precisely the nature of the
accident provided they can speak to an
occupant of the vehicle.
The Tele Aid system is available if

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

vehicle battery power is available

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 opens.
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
10 seconds.
Should this occur, assistance must be
summoned by other means.

326 Controls in detail
Useful features
The Mercedes-Benz Roadside Assistance
dispatcher will either dispatch a qualified
Mercedes-Benz technician or arrange to
tow your vehicle to the nearest
Mercedes-Benz Light Truck Center. For
services such as labor and/or towing,
charges may apply. Refer to the Roadside
Assistance Manual for more information.
The following is only available in the USA:

Sign and Drive services: Services such
as jump start, a few gallons of fuel or
the replacement of a flat tire with the
vehicle spare tire are obtainable.Information button¡
The Information button¡ is located
below the center armrest cover.
1Information button¡
Open the telephone* tray
(
page 306).
Press and hold button1 (for longer
than 2 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.
iThe indicator lamp on the Roadside
Assistance button• remains illuminated in
red for approximately 10 seconds during the
system self-check after switching on the ignition
(together with the SOS button and the
Information button¡).
See system self-check (
page 323) if the indi-
cator lamp does not come on in red or stays on
longer than approximately 10 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 Assistance call (e.g. the rele-
vant cellular phone network was not available).
The message
Call Failed appears in the
multifunction display.
Roadside Assistance calls can be terminated
using thet button on the multifunction
steering wheel or the END button on the
COMAND system headunit.

327 Controls in detail
Useful features
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 estab-
lished. Information regarding the operation
of your vehicle, the nearest
Mercedes-Benz Light Truck 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 sep-
arately) to learn more (USA only).
iWhile the call is connected, you can change
to the navigation menu by pressing the NAV
button on the COMAND system headunit.
iThe indicator lamp in the Information
button¡ remains illuminated in red for
approximately 10 seconds during the system
self-check after switching on the ignition
(together with the SOS button and the Roadside
Assistance button•).
See system self-check (
page 323) if the
indicator lamp does not come on in red or stays
on longer than approximately 10 seconds.
If the indicator lamp in 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
thet button on the multifunction steering
wheel or the END button on the COMAND
system headunit.
!If the indicator lamps do not start flashing
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 authorized
Mercedes-Benz Light Truck 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.

328 Controls in detail
Useful features
Call priority
If other service calls such as a Roadside
Assistance call or Information call are
active, an Emergency call is still possible.
In this case, the Emergency call will take
priority and override all other active calls.Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. SmartKey inside vehicle),
and the reserve SmartKey is not handy:
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.
Then return to your vehicle at the time
arranged with the Response Center
and pull the tailgate recessed handle
for a minimum of 20 seconds until the
SOS button is flashing.
The message
Connecting Call
appears in the multifunction display.
As an alternative, you may unlock the vehi-
cle via Internet using the ID and password
sent to you shortly after the completion of
your acquaintance call.The Response Center will then unlock your
vehicle with the remote door unlocking
feature.
iThe indicator lamp in the respective button
flashes until the call is concluded. Emergency
calls can only be terminated by a Response
Center or Customer Assistance Center repre-
sentative, whereas Roadside Assistance and
Information calls can also be terminated using
thetbutton on the multifunction steering
wheel or the END button on the COMAND
system headunit.
!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.
iThe remote door unlock feature is
available if the relevant cellular phone network is
available.
The SOS button will flash and the message
Connecting Call will appear in the multifunc-
tion display to indicate receipt of the door unlock
command.
Once the vehicle is unlocked, a Response Center
specialist may attempt to establish voice contact
with the vehicle occupants.
If the tailgate recessed handle was pulled for
more than 20 seconds before door unlock autho-
rization was received by the Response Center,
you must wait 15 minutes before pulling the
tailgate recessed handle again.

329 Controls in detail
Useful features
Stolen Vehicle Recovery services
In the event your vehicle was stolen:
Report the incident to the police.
The police will issue a numbered
incident report.
Pass this number on to the
Mercedes-Benz Response Center along
with your password issued to you when
you subscribed to the service.
The Response Center will then attempt
to covertly contact the vehicle’s
Tele Aid system. Once the vehicle is
located, the Response Center will
contact the local law enforcement and
you. The vehicle’s location will only be
provided to law enforcement.
Garage door opener
The integrated remote control is capable of
operating up to three separately controlled
devices. It provides a convenient way to
replace up to three hand-held remote
controls used to operate devices such as
garage door openers, gate openers, or
other devices compatible with HomeLink
®
or some other systems.
Before the integrated remote control can
be used, it must be programmed to the
garage door opener, gate operator or other
device you wish to operate. See the follow-
ing instructions for programming informa-
tion.
Interior rear view mirror with integrated
remote control
1Indicator lamp
2 3 4Signal transmitter button
Needed for programming (not part of
vehicle equipment):
5Hand-held remote control of
garage door opener, gate
operator or other device
6Hand-held remote control
button
iWhen the anti-theft alarm stays on for more
than 30 seconds, a call is initiated automatically
to the Response Center. For more information,
see “Anti-theft systems” (
page 106).

334 Controls in detail
Useful features

If another hand-held remote control is
available for the same device, try the
programming steps again using that
other hand-held remote control. Make
sure new batteries are in the hand-held
remote control before beginning the
procedure.

Straighten the antenna wire from the
garage door opener assembly. This
may help improve transmitting and/or
receiving signals.
Compass
Calling up the compass
Press buttonè orÿ repeatedly
until the
AIRMATIC/Compass menu
appears in the multifunction display.
The compass displays the direction
into which the vehicle is currently trav-
eling:
N, NE, E, SE, S, SW, W orNW.
Example for compass display on vehicles
equipped with AIRMATIC*
iCertain types of garage door openers are
incompatible with the integrated remote control.
If you should experience further difficulties with
programming the integrated remote control,
contact an authorized Mercedes-Benz Light
Truck Center, or call Mercedes-Benz Customer
Assistance Center (in the USA only) at
1-800-FOR-MERCedes, or Customer Service
(in Canada) at 1-800-387-0100.
iUSA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the following
two conditions:
(1) This device may not cause harmful interfer-
ence, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
iCanada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation of the device.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
iIf your vehicle is not equipped with
AIRMATIC*, the multifunction display will show
the compass only.