2014 MERCEDES-BENZ C-Class window

Operating safety
Important safety notes
G
WARNING
If you operate integrated communication
equipment in the vehicle when 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.
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. G
WARNING
Modifications to electronic components, their
software as well as wiring can impair their
function and/or the function of other net-
worked components. In particular, systems
relevant to safety could also be affected. As a
result, these may no longer function as
intended and/or jeopardize the operating
safety of the vehicle. There is an increased
risk of an accident and injury.
Never tamper with the wiring as well as elec-
tronic components or their software. You
should have all work to electrical and elec-
tronic equipment carried out at a qualified
specialist workshop.
If you make any changes to the vehicle elec-
tronics, the general operating permit is ren-
dered invalid.
! Note: This equipment has been tested
and found to comply with the limits for a
Class A digital device, pursuant to Part 15
of the FCC Rules. These limits are designed
to provide reasonable protection against
harmful interference when the equipment
is operated in a commercial environment.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the
instruction manual, may cause harmful
interference to radio communications.
This equipment complies with FCC radiation
exposure limits set forth for uncontrolled
equipment and meets the FCC radio fre-
quency (RF) Exposure Guidelines in Supple-
ment C to OET65.
This equipment has very low levels of RF
energy that is deemed to comply without
maximum permissive exposure evaluation
(MPE). However, it is recommended to install
it at a distance of at least 8 inches (20 cm)
between the radiation source and a person's
body (not including limbs such as hands,
wrists, feet and legs). Correct use
Always observe the following when using the
audio equipment:
R the safety notes in this manual
R national road traffic regulations
i Using roof carriers may impair the correct
functioning of a roof antenna (phone, sat-
ellite radio, GPS).
Retrofitting metalized plastic films to the
windows can affect radio reception. It can
also lead to poorer reception of all other
antennas (e.g. emergency call antennas)
inside the vehicle.
i Protection against theft: this device is
equipped with technical provisions to pro-
tect it against theft. Further information on
protection against theft can be obtained
from an authorized Mercedes-Benz Center. Declarations of conformity
Vehicle components which receive
and/or transmit radio waves USA:
"The wireless devices of this vehicle
comply with Part 15 of the FCC Rules. Oper- 8
Introduction

Audio 20 display
Display overview The display shows the function currently
selected and its associated menus. The dis-
play is divided into several areas. Example: radio
0043
Status bar
0044 Main function bar
0087 Waveband/frequency
0085 Display/selection window
0083 Radio text plus (if available)
0084 Submenu bar
006B HD Radio logo (only with HD Radio recep-
tion)
i The layout of the menus may vary,
depending on the vehicle's equipment.
Depending on the current setting of Audio 20,
the following information can be displayed in
the status bar:
R Time
If a mobile phone is operational, additional
information is shown:
R Name of the mobile phone network pro-
vider
R Signal strength of mobile phone network
Ä (Ypage 48)
R Receiver icon 0071,0075(Ypage 48) 16
Audio 20 operating systemAt a glance

Operating Audio 20
Selecting menus
Basic menu X
Press the appropriate 002A,003A,002Bor
0066 button.
The basic menu of the respective function
is shown. The main area is active.
The active area is highlighted.
i The following pictures show the display in
daytime design (Y page 31). The menu
highlighting appearance is different
depending on the display design. Switching from the display window to the
submenu bar
X Slide 00520064the controller.
Horizontal menus Navigating within a menu
X
Slide 009500520096or turn 00790052007Athe controller.
The menu item selected is highlighted in
white. Selecting a menu item
X
Press 0098the controller.
Exiting a menu without making a selec-
tion
X Slide 00970052the controller in the opposite
direction to the direction of the list.
or
X Press the 003Dback button on the control-
ler.
Vertical menus Navigating within a menu
X
Slide 009700520064or turn 00790052007Athe controller.
The menu item selected is highlighted in
white.
Selecting a menu item
X Press 0098the controller.
Exiting a menu without making a selec-
tion
X Slide 009500520096 the controller in the opposite
direction to the direction of the list.
or
X Press the 003Dback button on the control-
ler. Operating Audio 20
19At a glance

Remote control
Overview 0043
Switches the screen on/off
0044 Switches the button lighting on/off
0087 Selects the screen for the remote control
0085 Selects a menu or menu item
0083 Confirms a selection or setting
0084 Switches the sound on/off (for corded
headphones)
006B Adjusts the volume (for corded head-
phones)
006C Skips to a track, fast-forward/fast-rewind
006D Selects a track; direct entry
006E Exits a menu (back) Selecting the screen for the remote
control You can use the remote control to operate
one of the two rear screens at a time. To do
so, you must switch the remote control to the
desired screen.
X
To select the left-hand screen: turn
thumbwheel 0087until "L REAR" is high-
lighted in the window.
X To select the right-hand screen: turn
thumbwheel 0087until "R REAR" is high-
lighted in the window.
Switching the screen on/off i
If the SmartKey is in position 0or 1in the
ignition lock (see the vehicle Operator's
Manual), or the SmartKey is not inserted,
the screens in the rear will switch off after
30 minutes.
Before the screens switch off, they show a
message to this effect.
You can switch the screens back on. How-
ever, this will discharge the starter battery.
X Point the remote control at the rear-com-
partment screen which has been selected
for remote operation.
X Press button 0043on the remote control.
The respective rear screen switches on or
off.
i You can only switch the screens on using
the remote control if the ignition is
switched on.
Switching the button lighting on/off X
Press button 0044on the remote control.
Depending on the previous status, the but-
ton lighting is switched on or off.
i If you do not use the remote control for
about 15 seconds, the button lighting
switches off automatically. Rear Seat Entertainment
25At a glance

0043
Scale with indicator showing current vol-
ume
X Select a volume setting by turning 00790052007A
the controller.
X To close the setting scale: press0098or
slide 009500520096 . Using the telephone
Incoming call
Rejecting or accepting a call When you receive a call, you will hear a ring
tone and the incoming call will appear in the
display.
i Depending on the mobile phone, the
Audio 20 ring tone may differ from the one
you set. You could hear one of the follow-
ing:
R the mobile phone ring tone
R the Audio 20 ring tone
R the Audio 20 ring tone and the mobile
phone ring tone
The name and number of the caller are dis-
played if:
R the caller's details are stored in the phone
book
R the caller has enabled own number sending
and
R the "Hide data" function is deactivated
(default setting) (Y page 55).
Otherwise, the following appears (example): X
To accept: press the0061button on
Audio 20 or on the multifunction steering
wheel.
or
X Press 0098the controller.
X To reject: press the0076button on
Audio 20 or on the multifunction steering
wheel.
or
X Select Reject
Reject using the controller (slide
00950052or turn 00790052007A) and press 0098to confirm.
Once you have accepted the call, you can use
hands-free mode. You can adjust the call vol-
ume (Y page 21). For more information, see
the "Functions available during a call" section
(Y page 51).
i You can also accept a call if the display is
showing a display other than the telephone
mode. Once you have accepted the call, the
display shows telephone mode. After the
call is finished, you see the display of the
previous main application again.
The display does not switch to telephone
mode if you:
R hide the window using the 0038button
next to the controller
R accept the call using the 0066button on
the multifunction steering wheel
R accept the call using the 0061button on
Audio 20 Using the telephone
49Telephone Z

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
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