ation is subject to the two following two con-
ditions: 1) These devices may not cause
harmful interference, and 2) These devices
must accept any interference received,
including interference that may cause unde-
sired operation. Changes or modifications not
expressly approved by the party responsible
for compliance could void the user’s authority
to operate the equipment."
Canada: "The wireless devices of this vehicle
comply with Industry Canada license-exempt
RSS standard(s). Operation is subject to the
following two conditions: (1) These devices
may not cause interference, and (2) These
devices must accept any interference, includ-
ing interference that may cause undesired
operation of the device." Audio system features
These Operating Instructions describe all
standard and optional equipment available
for your audio device at the time of going to
print. Country-specific differences are possi-
ble. Please note that your audio equipment
may not offer all the features described. This
also applies to safety-relevant systems and
functions. The equipment in your vehicle may
therefore differ from that shown in the
descriptions and illustrations.
The original purchase agreement lists all sys-
tems installed in your vehicle. Contact an
authorized Mercedes-Benz Center if you have
any questions about equipment or operation. Function restrictions
For safety reasons, some functions are
restricted or unavailable while the vehicle is
in motion. You will notice this, for example,
because you will not be able to select certain
menu items. Data stored in the vehicle
A wide range of electronic components in
your vehicle contain data memories.
These data memories temporarily or perma-
nently store technical information about:
R The vehicle's operating state
R Incidents
R Malfunctions
In general, this technical information docu-
ments the state of a component, a module, a
system or the surroundings.
These include, for example:
R operating conditions of system compo-
nents, e.g. fluid levels
R the vehicle's status messages and those of
its individual components, e.g. number of
wheel revolutions/speed, deceleration in
movement, lateral acceleration, accelera-
tor pedal position
R malfunctions and defects in important sys-
tem components, e.g. lights, brakes
R vehicle reactions and operating conditions
in special driving situations, e.g. air bag
deployment, intervention of stability
control systems
R ambient conditions, e.g. outside tempera-
ture
This data is of an exclusively technical nature
and can be used to:
R assist in recognizing and rectifying mal-
functions and defects
R analyze vehicle functions, e.g. after an acci-
dent
R optimize vehicle function
The data cannot be used to trace the vehicle's
movements.
When your vehicle is serviced, technical infor-
mation can be read from the event data mem-
ory and malfunction data memory.
Services include, for example:
R repair services
R service processes Introduction
9 Z
R
warranties
R quality assurance
It is read by employees of the service network
(including manufacturers) using special diag-
nostic devices. More detailed information is
obtained from it, if required.
After a malfunction has been rectified, the
information is deleted from the malfunction
memory or is continually overwritten.
When operating the vehicle, situations are
conceivable in which this technical data, in
connection with other information (if neces-
sary, under consultation with an authorized
expert), could be traced to a person.
Examples include:
R accident reports
R damages to the vehicle
R witness statements
Further additional functions that have been
contractually agreed upon with the customer
allow certain vehicle data to be conveyed by
the vehicle as well. The additional functions
include, for example, vehicle location in case
of an emergency. 10
Introduction
Function restrictions
The telephone is not ready for use in the fol-
lowing situations:
R The telephone automatically tries to log on
to a network. If no network is available, you
may not be able to make a " 911" emer-
gency call. If you attempt to make an out-
going call, the No Service
No Service message will
appear for a short while.
If Audio 20 is switched off during a call in
hands-free mode, the call is disconnected.
You can prevent this as follows: before
switching off Audio 20, switch the mobile
phone to "Private mode" (see the mobile
phone operating instructions). "911" emergency call
The 911 emergency call is a public service.
Using it without due cause is a criminal
offense.
The following requirements must be fulfilled
for a 911emergency call:
R the mobile phone must be switched on.
R a network must be available.
R a valid and operational SIM card must be
inserted in the mobile phone.
R the mobile phone must be connected to
Audio 20 via Bluetooth ®
.
If you cannot make an emergency call, you
must arrange rescue measures yourself.
X Enter numbers on Audio 20 (Y page 50).
X Press 0061.
The telephone makes the connection.
X Wait until the emergency call center
answers and describe the emergency sit-
uation. Telephony via the Bluetooth
®
inter-
face Prerequisites
To use Bluetooth ®
interface telephony in con-
junction with Audio 20, you need a Blue-
tooth ®
-capable mobile phone.
On Audio 20
X Activate the Bluetooth ®
function on
Audio 20 (Y page 33).
On the mobile phone
X Switch on the mobile phone and enter the
PIN when prompted to do so (see the
mobile phone operating instructions).
X Activate Bluetooth ®
functions and, where
necessary, Bluetooth ®
visibility on the
mobile phone (see the mobile phone oper-
ating instructions).
The battery of the mobile phone should
always be kept sufficiently charged in order
to prevent malfunctions.
In preparation for telephoning via the Blue-
tooth ®
interface, you should check the fol-
lowing items on your mobile phone (see the
mobile phone operating instructions):
R Hands-Free Profile
The mobile phone must support Hands-
Free Profile 1.0 or above.
R Bluetooth ®
visibility
On some mobile phones, it is not enough to
activate only the Bluetooth ®
function. Your
device must also be made "visible" to other
devices (see the mobile phone operating
instructions).
This visibility is for restricted periods of
time on some mobile phones.
R Bluetooth ®
device name
Every Bluetooth ®
device has its own Blue-
tooth ®
device name. This device name is
freely definable, but can be identical for all
devices from the same manufacturer. It is
therefore recommended that you change
this name so that you can easily recognize Telephony via the Bluetooth
®
interface 43Telephone Z
SIRIUS XM Radio employs a fleet of high-
performance satellites to broadcast around
the clock in the contiguous USA and Can-
ada.
The satellite radio program is available for
a monthly fee. Details are available from
the SIRIUS XM Service Center and at
http://www.sirius.com (USA) or
http://www.siriuscanada.com (Can-
ada). Registering SatRadio
X Switch on SatRadio mode (Y page 65).
The SatRadio basic menu appears showing
the weather channel. You cannot select any
other stations.
X Select Sat
Sat in the menu bar and press 0098to
confirm.
X Select Service
Service and press 0098to confirm.
The service information screen appears. Service information screen
0043
Telephone number of the satellite radio
provider (SIRIUS XM Radio)
0044 Your satellite radio's SIRIUS XM ID
X Call the phone number of your satellite
radio provider shown on the screen.
i You can also have the satellite service
activated online. To do so, visit the SIRIUS
XM Radio website at
http://www.sirius.com (USA) or
http://www.siriuscanada.com (Can-
ada). Once the connection has been established:
X Follow the instructions of the service staff.
The activation process may take up to ten
minutes. If the activation is successful, the
Updating
Updating Channels... Channels... message appears
in the display, followed by the SatRadio
basic menu.
i If registration is not included when pur-
chasing the system, your credit card details
will be required to activate your account.
If the satellite radio is not installed or is not
installed correctly, the Device Unavail‐ Device Unavail‐
able
able message will appear. Switching on satellite radio mode
Notes You can also use the multifunction steering
wheel to tune in channels or scroll through
lists, e.g. by pressing the
00590065
00630064 buttons (Y page 18).
For important notes on registration, see "Reg-
istering satellite radio" (Y page 65).
X Press 00E2.
The No Service No Service message appears when
starting up or if no signal is being received.
Once Audio 20 receives the signal, the
SatRadio basic menu appears. The station
last selected is played.
i Repeatedly pressing this button switches
between the FM, AM and WB wavebands in
that order and then switches to satellite
radio mode. Pressing the button again
takes you back to FM radio mode.
If the satellite radio is not installed or is not
installed correctly, the Device Unavail‐ Device Unavail‐
able
able message will appear.
Once Audio 20 receives the signal, the SatRa-
dio basic menu appears. The station last
selected is played. Satellite radio
65Audio
X
To return to the SatRadio basic menu:
slide 009500520096 the controller. Displaying service information
The provider's customer service center is
available by phone at any time to answer any
general questions or questions on the ver-
sions available.
X In the menu bar, select Sat
Sat by turning
00790052007A the controller and press 0098to con-
firm.
X Select Service Service and press 0098to confirm.
The provider's details appear. Service information screen
0043
Telephone number of the satellite radio
provider (SIRIUS XM Radio)
0044 Your satellite radio's SIRIUS XM ID
X To return to the SatRadio basic menu:
slide 009500520096 the controller. Channel list updates
When receiving a new channel list, the display
shows the Updating Channels...
Updating Channels... mes-
sage.
The station last selected is switched to mute
until the update has been completed. SatRa-
dio mode is not available during this process.
Once the update has been completed, the
SatRadio basic menu appears. The station
last selected is played. Sound settings
You will find details on the sound settings in
the "At a glance" section (Y page 21). Audio CD and MP3 mode
Important safety notes
G
WARNING
The CD/DVD drive is a class 1 laser product.
If you open the CD/DVD drive housing, you
could be exposed to invisible laser radiation.
This laser radiation could damage your retina.
There is a risk of injury.
Never open the housing. Always have main-
tenance and repair work carried out at a quali-
fied specialist workshop. G
WARNING
Handling discs while driving may distract you
from traffic conditions. You could also lose
control of the vehicle. There is a risk of an
accident.
Handle discs only when the vehicle is station-
ary.
Bear in mind that at a speed of only 30 mph
(approximately 50 km/h), your vehicle covers
a distance of 44 feet (approximately 14 m)
every second.
Audio 20 is equipped with a single CD drive.
The drive can play back audio CDs and MP3
CDs. The settings available in the menu may
vary depending on the type of disc. Inserting and removing CDs
Notes If the CD has a printed side, this must face
upwards when the CD is inserted. If neither
side is printed, the side to be played should
face downwards. The system may not be able
to play discs with copy protection.68
Audio CD and MP3 modeAudio
Operation with the Media Interface
Important safety notes
G
WARNING
If you handle or operate mobile audio/video
sources when driving, you will be distracted
from the traffic conditions. You could also
lose control of the vehicle. There is a risk of
an accident.
Only handle or operate these mobile audio/
video sources when the vehicle is stationary.
Only operate mobile audio/video sources
using the communication equipment inte-
grated in the vehicle when traffic conditions
permit. If you are not sure that this is possible,
park the vehicle paying attention to traffic
conditions and operate the equipment when
the vehicle is stationary. Connection options
Overview You will find the connection sockets in the
center console stowage compartment.
Device-specific adapter cables are required
to connect external devices to the Media
Interface. These are supplied in country-spe-
cific versions with the Media Interface.
i Store individual parts in a safe place.
Only use genuine Mercedes-Benz connec-
tion cables.
The Media Interface allows you to connect the
following devices to Audio 20:
R iPod ®
R iPhone ®
R certain MP3 players
i iPod ®
and iPhone ®
are registered trade-
marks of Apple Inc., Cupertino, California,
USA.
i MP3 players that support MTP (Media
Transfer Protocol) can be used. This allows
the MP3 player to be easily connected to the Media Interface and removed after use.
Audio data is played without problem. On
some MP3 players, you have to activate the
relevant function; see the MP3 player oper-
ating instructions.
Supported devices For further details and a list of supported
devices, please visit
http://www.mbusa-mobile.com
(custom-
ers in the USA only). Then follow the instruc-
tions in the "Media Interface" section. You
can also call Mercedes-Benz Customer
Service at 1-800-FOR-MERCedes
(1-800-367-6372) (US), or Customer Rela-
tions at 1-800-387-0100 (Canada). Connecting an external device
i At extreme temperatures, e.g. direct sun-
light, external devices cannot be guaran-
teed to function correctly. Mercedes-Benz
accepts no liability for damage to external
devices. Do not leave external devices in
the vehicle.
Never connect more than one device at a
time. You will otherwise not be able to play
back from the external device. Please consult
an authorized Mercedes-Benz Center for fur-
ther information.
USB hubs (devices with several USB connec-
tions) are not supported. 0043
Socket for 3.5 mm jack plug, e.g. for MP3
players
0044 iPod ®
plug, to connect an iPod ®80
Operation with the Media InterfaceAudio