X
To set the date: slide006400520097or turn
00790052007Athe controller and press 0098to con-
firm. Setting the format
X Select Format
Format by sliding 00970052or turning
00790052007Athe controller and press 0098to con-
firm. i
You can set the format for the date and
time separately.
X To set the date/time format: slide
0064 00520097or turn 00790052007Athe controller and
press 0098to confirm. Favorites button (asterisk key)
i You can assign a function from the favor-
ites menu to the favorites button (star but-
ton) on the controller. 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
00950052 or turn 00790052007A) and press 0098to confirm.
X Select Assign as Favorite Assign as Favorite by sliding
009700520064 the controller and press 0098to con-
firm. Favorites menu (example: vehicle with a favorites
button)
X
Select the desired function by sliding
009700520064 the controller and press 0098to con-
firm.
The selected function is assigned to the
favorites button.
i If your vehicle has two favorites buttons,
you can assign a function to each favorites
button. The favorites menu will then have
an additional submenu where you can
choose the favorites button to which you
want to assign a function. Bluetooth
®
settings General information about Blue-
tooth
®
Bluetooth ®
technology is a standard for
short-range wireless data transmissions up to
approximately 10 meters. The Bluetooth ®
function must be activated in the Audio 20
system in order to call using hands-free mode
and to receive electronic business cards
(vCards). 32
Bluetooth ®
settingsSystem 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. Seat functions
Overview
The possible settings depend on the type of
seat and the vehicle model series. For M-
Class and GL-Class vehicles with multicon-
tour seats, you can call up the following
adjustment functions:
R seat cushion length
R backrest side bolsters
R lumbar
R massage Selecting the seat
First select the seat which you wish to adjust.
X Option 1: press the 0050button next to the
controller.
X Option 2: press the 0066button.
X Select Seat
Seatand press 0098to confirm. X
To switch to the lower line, for both options
slide 00520064the controller.
X Select Driver's Seat Driver's Seat orPassenger
Passenger
Seat
Seat by turning 00790052007Athe controller and
press 0098to confirm. Adjustment functions
Adjusting the seat cushion This function allows you to adjust the length
of the seat cushion.
X
Select the seat (Y page 36).
X Select Seat Surface Seat Surface by turning00790052007Athe
controller and press 0098to confirm.
A scale appears. X
Turn 00790052007A or slide 009700520064the controller and
press 0098to confirm.
X To exit the menu: press the0038back
button.
Adjusting the seat contour in the lum-
bar region of the seat backrest This function allows you to adjust the air
cushions in the lumbar region of the backrest
(4-way lumbar support).
X
Select the seat (Y page 36).
X Select Lumbar Lumbar by turning 00790052007Athe control-
ler and press 0098to confirm.
A crosshair appears. You can make two
settings: 36
Seat functionsVehicle functions
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. Becker
®
MAP PILOT navigation mod-
ule Important safety notes
G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle 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 the equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary. General notes
You can use the Becker ®
MAP PILOT naviga-
tion module to turn the Audio 20 into a full-
fledged navigation system.
You can find more information under http://
www.beckermappilot.com.
i If your vehicle is equipped with the
Becker ®
MAP PILOT navigation module,
you can slide the controller diagonally to
move the map. Audio fadeout
The audio fadeout function is only active
when the Becker ®
MAP PILOT navigation
module is connected. Audio fadeout reduces
the volume of other audio sources, such as the radio or CD, when you receive a naviga-
tion message.
Audio fadeout on/off 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 Audio
Audio Fadeout
Fadeout for
forNav
NavInstru‐
Instru‐
ction
ction by sliding 006400520097the controller and
press 0098to confirm.
Switch the audio fadeout function on 0073or
off 0053. 40
Becker ®
MAP PILOT navigation moduleNavigation
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. Radio mode
Important notes
Portable electronic devices in the vehicle may
seriously impair radio reception. Introduction
i Information about operating Audio 20 can
be found in the "At a glance" section
(Y page 19).
The sound settings can be found in the
"Basic functions of Audio 20" section
(Y page 21).
i Portable electronic devices in the vehicle
may seriously impair radio reception. Switching to radio mode
Switching on using the 002A 002Abutton X
Press the 002Abutton.
The radio display appears.
Radio mode: you will hear the last station
played on the last waveband selected.
i Repeatedly pressing the 002Abutton
switches between the FM, AM and WB
wavebands in that order and then calls up
satellite radio mode. Pressing the button
again takes you back to FM radio mode. Switching modes via the audio menu X
Select Audio Audiofrom the main function bar
using the controller (slide 00970052and turn
00790052007A ) and press 0098to confirm.
If radio mode was the last mode selected,
it will now be active.
If another audio mode is switched on, you
can now switch to radio mode in the audio
menu.
Radio display Radio display
0043
Main function bar
0044 Display showing station name (if availa-
ble)
0087 Frequency of the selected station
0085 Display/selection window showing sta-
tion name or frequency
0083 Sound settings
0084 To switch between FM, AM, WB and sat-
ellite radio
006B To display radio text
006C Memory functions
006D Radio functions
006E HD Radio logo (only with HD Radio recep-
tion)
i If the station supports radio text and infor-
mation is available, the system shows it
below the display/selection window. 60
Radio
modeAudio
Switching HD Radio on/off
You can switch off HD Radio™ in the radio
submenu:
X Select Radio
Radio in the radio display by sliding
0052 0064the controller and press 0098to confirm.
X Select HD Radio
HD Radio and press0098to confirm.
HD Radio™ on: 0073
HD Radio™ off: 0053
i Notes on HD Radio™:
HD Radio™ is a digital radio system from
the U.S.A. When HD Radio is off, you will
hear only the analog program on all fre-
quencies.
HD Radio™ provides:
R digital transmission on the same wave-
bands as analog AM/FM. The analog
AM/FM stations remain in the same
position when selecting a station.
R broadcasting of several program streams
over a single FM frequency (e.g. HD1,
HD2, etc.).
R clear, interference free reception.
R FM: CD quality sound.
AM: analog FM station sound quality.
R the display of text-based information
(e.g. artist, track name) in the display
For further information on HD Radio™, visit
http://www.hdradio.com . Switching wavebands
You can switch the radio waveband between
FM, MW, WB and SatRadio. Waveband Frequency
FM (VHF) 87.7 – 107.9 MHz
MW (medium wave) 530 – 1710 kHz
WB (weather band) Weather report
channels
Satellite radio Satellite radio sta-
tions
X
Press the 002Abutton once or several
times. Selecting a station
Selecting stations via the station
search function X
Press the 002Abutton once or repeatedly
until the FM FM,AM
AM,WB
WBorSatRadio
SatRadio waveband
appears in the submenu bar.
X Slide 009500520096or turn 00790052007Athe controller
when the display/selection window is
active.
or
X Press the 0048or0049 button.
Station search scans up or down and stops
at the next station, subprogram (HD Radio
mode) or channel (SatRadio mode) found.
Selecting station via the station presets X
Quick setting: press a number key, e.g.
0082. Radio mode
61Audio
X
Select the channel by turning 00790052007Athe con-
troller and press 0098to confirm.
or
X Press a number key on the control panel,
e.g. 4, at any time. Displaying program information
Radio text: example display
This function is only available for analog FM
programs and digital AM/FM programs (HD
Radio™).
Information relevant to the current station is
shown in the display window.
X Select Info
Info in the radio display by sliding
00520064 and turning 00790052007Athe controller and
press 0098to confirm.
Information on the currently selected sta-
tion is displayed. Content is dependent on
the station.
X To return to the radio display: confirm
Info
Info by pressing 0098.
X Slide 00970052the controller up. Displaying station information
This function is only available for analog FM
programs and digital AM/FM programs (HD
Radio™). X
Select Radio
Radio in the radio display by sliding
0052 0064and turning 00790052007Athe controller and
press 0098to confirm.
X Select Show Station Info Show Station Info and press0098
to confirm.
Display Station Info Display Station Info is switched on
0073 or off 0053, depending on the previous
status. Satellite radio
Important notes
This section provides detailed information on
the following topics:
R Selecting a channel and program category
R Memory functions
R Sound settings
i The SatRadio mode described below
requires optional satellite radio equipment
and registration with a satellite radio pro-
vider.
i Note that the categories and channels
shown in the illustrations depend on the
program content offered by the provider.
The program content may vary. The illus-
trations and descriptions in these operat-
ing instructions may therefore differ from
the channels and categories offered by the
provider.
SatRadio mode may be temporarily inter-
rupted or unavailable for a variety of rea-
sons. These reasons include environmental
or topographical conditions as well as other
issues beyond the control of Mercedes-
Benz USA, LLC. Operation may also be
impaired in certain locations (e.g. tunnels,
parking garages as well as inside or next to
buildings) or in the vicinity of other con-
structions.
i SIRIUS XM Radio offers more than 130
digital-quality radio channels providing
100% commercial-free music, sport, news
and entertainment. 64
Satellite radioAudio
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
Using the
003A
003Abutton X
Press the 003Abutton one or more times.
i Pressing the button repeatedly changes
the operating mode in the following order:
R Audio CD/MP3 (disc)
R USB storage media
R Operation with the Media Interface
R Bluetooth ®
audio mode
R Audio AUX
Using the media list X
Select Bluetooth Audio
Bluetooth Audio in the media list
by turning 00790052007Athe controller and press
0098 to confirm (Y page 70).
Audio 20 activates the connected device.
You will see a message to this effect. The
basic display then appears.
i If the Bluetooth ®
audio device connected
supports metadata and corresponding data
is available, then the artist, track and album
name can be displayed.
Bluetooth ®
audio basic display Basic display: Bluetooth
®
audio with the single CD
drive (example)
0043 Track name
0044 Current playback settings (no symbol for
"Normal track sequence")
0087 Sound settings
0085 Album name
0083 Media list 0084
To stop 00DBor start 00D0playback
006B Data medium position in the media list
006C To connect a Bluetooth ®
audio device, to
increase the volume on Audio 20
006D Bluetooth ®
audio data medium type Starting/stopping playback
X To start playback: select00D0using the
controller (slide 00520064and turn 00790052007A) and
press 0098to confirm.
Playback starts. 00DBis selected.
X To stop playback: select00DBby turning
00790052007Athe controller and press 0098to con-
firm.
A message appears. 00D0is selected.
X To resume playback: select00D0by turn-
ing 00790052007Athe controller and press 0098to
confirm.
A message appears. 00DBis selected. Starting playback if the Bluetooth
®
audio device has been stopped
During the search for mobile phones
(Y page 44), the connection with the Blue-
tooth ®
audio device is terminated. In the
Bluetooth ®
audio basic display (Y page 48),
you will see the No Bluetooth Audio No Bluetooth Audio
Device Connected
Device Connected message and theCon‐
Con‐
nect Last Device
nect Last Device menu item cannot be
selected while the system is searching for
mobile phones.
When the search is finished, the Bluetooth ®
audio device can be reconnected.
X Confirm Connect Last Device
Connect Last Device by press-
ing 0098.
Depending on the Bluetooth ®
audio device
used, playback starts immediately or you
must start playback manually.
In this case, you will see the Bluetooth Bluetooth
Audio Device Paused
Audio Device Paused message.78
Bluetooth AudioAudio