1, 2, 3 ...
911 emergency call .............................43A
Active partition (USB devices
only) Selecting .......................................... 72
Adjusting the bass .............................. 21
Adjusting the volume ..........................21
Alphabetical track selection ..............84
Audio 20 Components .................................... 12
Audio AUX ............................................ 85
Audio CD/DVD and MP3 mode Switching to (Rear Seat Entertain-
ment System) .................................. 92
Audio CD/MP3 mode
Switching to ..................................... 69
Audio DVD
Pause function ................................. 95
Stop function ................................... 95
Audio fadeout ...................................... 40
Audio format Setting (audio DVD mode) ...............95
AUX ....................................................... 85
AUX (Rear Seat Entertainment Sys-
tem) Connecting .................................... 101
Switching to ................................... 102
AUX jacks
CD/DVD drive ................................. 26
AUX mode
Setting the brightness/contrast/
color .............................................. 102
Switching picture format ...............102 B
Back button ......................................... 15
Basic functions .................................... 20
Basic menu Calling up ........................................ .19
Becker ®
MAP PILOT
see Navigation Bluetooth
®
Activating/deactivating ...................33
Connecting another mobile
phone .............................................. 47
Device list ........................................ 75
Searching for a mobile phone ..........44
Settings ........................................... 32
Bluetooth ®
audio basic display ..........78
Bluetooth ®
audio device
Connecting ...................................... 75
Reconnecting ................................... 76
Bluetooth ®
audio mode
Switching on .................................... 77
Bluetooth ®
interface
Telephony ........................................ 43
Bluetooth ®
interface telephony
Conditions ....................................... 43 C
Call lists ................................................ 56
Opening and selecting an entry .......57
Camera
see Rear view camera
Category
Satellite radio .................................. 66
CD
Ejecting ............................................ 68
Fast forward/fast rewind .................72
Inserting .................................... 68, 69
Mode, switching to ..........................69
Multisession .................................... 73
Selecting a track .............................. 71
CD/DVD
Ejecting (Rear Seat Entertainment
System) ........................................... 92
Inserting (Rear Seat Entertain-
ment System) .................................. 91
CD mode ............................................... 68
Pause function ................................. 70
Playback options .............................. 72
Selecting a medium .........................70
Clear button ......................................... 15
Connecting an iPod ®
/iPhone ®
........... 80
Connecting a USB device .................... 694
Index
Overview
Symbol Controller operation Function (examples)
0098
Press briefly R
Selects a menu item Press and hold until the selected
action is carried out R
Stores a station 00790052007A
Turn R
Scrolls through vertical or hori-
zontal menus
R Scrolls through text
R Makes settings 009700520064 Slide R
Scrolls through a vertical menu
R Exits a horizontal menu 009500520096
Slide R
Scrolls through a horizontal
menu
R Exits a vertical menu Slide and hold R
Fast forward or rewind during CD
playback
R Scrolls through lists Controller buttons
0043
Back button 003D
0044 Clear button 0084
0087 Seat function button
0085 Favorites button
i If the seats on your vehicle can be
adjusted via Audio 20, it will have the seat
function button. Otherwise, a second favor-
ites button will be located here. X
To go up a level in the menu: briefly press
the 003D back button
Audio 20 changes to the next higher menu
level in the current operating mode.
X To switch to the basic menu: press and
hold the 003Dback button.
Audio 20 changes to the basic menu of the
current operating mode.
X To delete individual characters: briefly
press the 0084delete button.
X To delete an entire entry: press and hold
the 0084 delete button.
X To call up the favorites function: press
the left or right star button.
i Information on setting the Favorites func-
tion (Y page 15). Audio 20 operating system
15At a glance
X
To select a setting: slide009700520064or turn
00790052007Athe controller.
X To save a setting: press0098the controller.
The setting is stored and you exit the menu.
i The balance setting is automatically reset
to the default value (0) when Logic 7 ®
is
switched on or off.
i Please bear the following in mind:
R To provide the optimum audio experi-
ence for all passengers when Logic 7 ®
is
switched on, the balance should be set
to the center of the passenger compart-
ment.
R MP3 tracks should have a bit rate of at
least 128 kbit/s.
R Surround-sound playback does not func-
tion for mono signal sources, such as the
medium wave range (MW) in radio mode.
R If radio reception is poor, e.g. in a tunnel,
you should switch off Logic 7 ®
. Other-
wise, it may switch between stereo and
mono and cause temporary sound dis-
tortions.
R On some stereo recordings, the sound
characteristics may differ from conven-
tional stereo playback. Basic functions of Audio 20
23At a glance
Further information on telephone mode
(Y page 43).
Bluetooth ®
is a registered trademark of Blue-
tooth Special Interest Group (SIG) Inc. Activating/deactivating Bluetooth
®
X To call up the basic menu: press0066.
X Switch to the submenu bar by sliding 00520064
the controller.
X Select Settings
Settings using the controller (slide
009500520096 or turn 00790052007A) and press 0098to confirm.
X Select Activate Bluetooth
Activate Bluetooth using the
controller (slide 00C500520097) and press 0098to
confirm.
This switches Bluetooth ®
on 0073 or off 0053.
Audio 20 is now ready to utilize Blue-
tooth ®
functions, such as receiving data
from other devices or connecting mobile
phones. System language settings
X To call up the basic menu: press0066.
X Switch to the submenu bar by sliding 00520064
the controller.
X Select Settings
Settings using the controller (slide
009500520096 or turn 00790052007A) and press 0098to confirm.
X Select Language Language using the controller (slide
0097005200C5 or turn 00790052007A) and press 0098to con-
firm.
X Select the desired language and press 0098
to confirm.
The menu system is shown in the selected
language. Reset function
i You can reset Audio 20 to the factory set-
tings. Among other things, this will delete
all personal data (e.g. phone book entries),
and all system settings are returned to the
factory settings. A system reset is recom-
mended, e.g. before selling the vehicle.
X To call up the basic menu: press0066.
X Switch to the submenu bar by sliding 00520064
the controller.
X Select Settings Settings using the controller (slide
009500520096 or turn 00790052007A) and press 0098to confirm.
X Select Reset Resetand press 0098to confirm.
A prompt appears asking whether you wish
to reset.
X Select Yes YesorNo
No.
If you select Yes
Yes, a prompt will appear again
asking whether you really wish to reset.
X Select Yes
YesorNo
No and press 0098to confirm.
If you select Yes
Yes, Audio 20 will be reset and
restarted. Reset function
33System settings
Audio system features
i These Operating Instructions describe all
standard and optional equipment available
for your audio device at the time of going
to print. Country-specific deviations are
possible. Please note that your audio equip-
ment may not offer all the features descri-
bed. General notes
Important safety notes
G
WARNING
If you operate mobile communication equip-
ment while driving, you will be distracted from
traffic conditions. You could also lose control
of the vehicle. There is a risk of an accident.
Only operate this equipment when the vehicle
is stationary.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is cov-
ering a distance of 44 feet (approximately
14 m) every second.
If you make a call on your mobile phone while
driving, always use hands-free mode. Only
use the mobile phone when road, weather
and traffic conditions permit. Introduction
Audio 20, in conjunction with a Bluetooth ®
-
capable mobile phone, enables you to make
calls via the Bluetooth ®
interface. Using the
Bluetooth ®
interface and a suitable mobile
phone, you can use the Audio 20 hands-free
facility and receive vCards.
With a suitable mobile phone, you can use the
hands-free system via the Bluetooth ®
inter-
face. You can also import contacts from the
mobile phone via PBAP (Phone Book Access
Profile) and receive vCards.
You can obtain more detailed information
about suitable mobile phones and about con- necting Bluetooth
®
-capable mobile phones
from your authorized Mercedes-Benz Center.
You can also obtain information via the Inter-
net at http://www.mbusa-mobile.com (for
customers in the USA only). Call disconnection while the vehicle is
in motion
A call may be disconnected if:
R there is insufficient network coverage in
certain areas.
R you move from one transmitter/receiver
area (cell) into another and no channels are
free.
R you use a SIM card which is not compatible
with the network available.
R you are using a mobile phone with "Twin-
card" and the mobile phone with the sec-
ond SIM card is already logged into the net-
work. Operating options
You can operate the telephone by using the
following controls:
R Audio 20 controller
Turn 00790052007A
Slide 009500520096 or009700520064
Press 0098
R the 0061 or0076 button and the number
keypad on Audio 20
R using the 0061or0076 button on the mul-
tifunction steering wheel
All descriptions and illustrations in this sec-
tion refer to the Audio 20 operating system
unless stated otherwise. 42
General notesTelephone
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
X
Directly in the station presets: select
Presets
Presets by sliding 00520064and turning 00790052007A
the controller and press 0098to confirm.
or
X Press 0098the controller when the display/
selection window is active.
The station preset memory appears. The
0036 dot indicates under which preset the
currently selected station is stored.
X Select a station by turning 00790052007Aand press-
ing 0098to confirm or press a number key,
e.g. 0082.
Selecting stations by entering the fre-
quency manually X
Select Radio Radiousing the controller (slide
0052 0064,009500520096or turn 00790052007A) and press 0098to
confirm.
X Select Enter Frequency
Enter Frequency and press0098to
confirm. i
Only permissible numbers for the fre-
quency range can be entered in front of the
decimal point. If a non-permissible number
is entered after the decimal point, the next
lowest frequency is set.
X Press the number keys on the number key-
pad.
Audio 20 tunes in to the frequency. Setting a station via the multifunction
steering wheel X
In the audio menu in the instrument cluster:
press the 0063or0064 button briefly.
The next or the previous station from the
station list is set.
X In the audio menu in the instrument cluster:
press and hold the 0063or0064 button for
longer than two seconds.
The previous or next station/channel in the
waveband will be set. Storing a station
Storing stations manually Ten stations can be stored for each wave-
band.
i
If a selected preset is already occupied,
the new station will be stored in place of
the old station.
X Quick save: when the display/selection
window is active, press and hold a number
key (0 to 9) on the number keypad until you
hear a tone.
The station is now stored on the selected
preset.
X Directly in the station presets: press0098
the controller when the display/selection
window is active.
or
X Select Presets
Presets using the controller (slide
0052 0064,009500520096or turn 00790052007A) and press 0098to
confirm.
The station preset display appears. The
0036 dot in front of a preset position indi-
cates that the currently selected station is
stored there. 62
Radio modeAudio
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