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Introduction81Radio receptionRadio reception may be disrupted bystatic, noise, distortion or loss of
reception due to:
● changes in distance from the transmitter
● multi-path reception due to reflection
● shadowing
Theft-deterrent feature
The Infotainment system is equipped
with an electronic security system for
the purpose of theft-deterrence.
The Infotainment system therefore
functions only in your vehicle and is worthless to a thief.
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82IntroductionControl elements overviewCD 300
Page 83 of 105

Introduction831 RADIOActivate radio or change
waveband .............................. 89
2 CD
Start CD/MP3/WMA
playback ................................ 99
3 Search backwards
Radio: search backwards .....89
CD/MP3/WMA: skip track
backwards ............................. 97
4 Radio station buttons 1...6
Long press: save station .......90
Short press: select station ....90
5 m
Press: switch on/off the
Infotainment system ..............85
Turn: adjust volume ..............85
6 Search forwards
Radio: search forwards .........89
CD/MP3/WMA: skip track
forwards ................................ 977 AS 1/2
Automatic memory levels
(preset radio stations) ...........90
Short press: select
autostore list .......................... 90
Long press: save stations
automatically ......................... 90
8 FAV 1/2/3
Lists of favourites (preset
radio stations) ....................... 90
9 TP
Activate or deactivate
radio traffic service ................92
If Infotainment system is
switched off: display time
and date ................................ 92
10 CD ejection ........................... 97
11 CONFIG
Open settings menu ..............88
12 MP3: folder level lower .......... 9713 INFO
Radio: information on the
currently played station .........89
CD/MP3/WMA:
information on the
currently inserted CD ............97
14 Multifunction knob
Turn: mark menu options
or set numeric values ...........86
Press: select/activate the
marked option; confirm set
value; switch function on/off ..86
15 CD slot .................................. 97
16 BACK
Menu: one level back ............86
Input: delete last character or entire entry ........................ 86
17 MP3: folder level higher ........97
18 TONE
Tone settings ........................ 87
19 PHONE
Activate mute ........................ 85
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84Introduction20 AUXChange audio source ............99Steering wheel audio controls
1qw
No function.
2 SRC (Source) ........................ 85
Press: select audio source ....85
With radio active: turn
upwards/downwards to
select next/previous
preset radio station ...............89
With CD player active: turn upwards/downwards to
select next/previous CD/
MP3/WMA track ....................97
3w
Increase volume .................... 85
4 ─
Reduce volume .....................85
5 xn
Press: activate/deactivate
mute ...................................... 85
Page 85 of 105

Introduction85Usage
Control elements
The Infotainment system is operated
via function buttons, multifunctional
knobs and menus that are shown on
the display.
Inputs are made via: ● the central control unit in the instrument panel 3 82
● controls on the steering wheel 3 82
Switching the Infotainment
system on or off
Press X briefly. After switching on,
the last selected Infotainment source
is active.
Automatic switch-off If the Infotainment system has been
switched on by pressing X when the
ignition was switched off, it will switch
off again automatically after
10 minutes.Setting the volume
Turn X. The current setting is shown
on the display.
When the Infotainment system is
switched on, the last selected volume
is set, provided that the volume is
lower than the maximum start-up
volume.
The following can be set separately: ● the maximum start-up volume 3 88
● the volume of the traffic announcements 3 88
Speed compensated volume
When speed compensated volume is
activated 3 88 the volume is
adapted automatically to make up for the road and wind noise as you drive.
Mute
Press PHONE to mute the audio
sources.
To cancel mute again: turn X or press
PHONE again.Volume limitation at high
temperatures
At very high temperatures inside the
vehicle the Infotainment system limits
the maximum adjustable volume. If
necessary the volume is decreased
automatically.
Modes of operation
Radio
Press RADIO to open the radio main
menu or to change between the
different wavebands.
Press the multifunction knob to open
a submenu with options for station
selection.
Detailed description of the radio
functions 3 89.
Audio players
Press CD or AUX to open the CD,
USB, iPod ®
or AUX menus or to
switch between these menus.
Press the multifunction knob to open
a submenu with options for track
selection.
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86IntroductionDetailed description of:● CD player functions 3 97
● AUX input functions 3 99
● USB port functions 3 100
Basic operation
Multifunction knob The multifunction knob is the central
control element for the menus.
Turn the multifunction knob: ● to display a menu option
● to set a numeric value
Press the multifunction knob: ● to select or activate the option displayed
● to confirm a set value
● to switch a system function on/offBACK button
Press BACK briefly to:
● exit a menu
● return from a submenu to the next higher menu level
● delete the last character in a character sequence
Press and hold BACK for a few
seconds to delete the entire entry.
Examples of menu operation
Menu elements and symbolsThe up and down arrows 1 indicate:
the top menu level is active. Further
options are available in the active
menu.
Turn the multifunction knob to display the other options in the active menu.
The angled arrow 2 indicates: a
submenu with further options is
available.
Press the multifunction knob to select
the option displayed and to open the
corresponding submenu.
The arrow pointing to the right 3
indicates: the first submenu level is
active (two arrows = second submenu
level active).
The down arrow 4 indicates: further
options are available in the active
submenu.
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Introduction87Activating a setting
Press the multifunction knob to open
the corresponding settings menu.
Turn the multifunction knob to display the desired setting.
Press the multifunction knob to
activate the setting.
Setting a value
Press the multifunction knob to open
the corresponding settings menu.
Turn the multifunction knob to change the current value of the setting.
Press the multifunction knob to
confirm the set value.
Switching a function on or off
Press the multifunction knob to open
the corresponding settings menu.
Turn the multifunction knob to mark the setting On or Off.
Press the multifunction knob to
confirm the marked setting.
Tone settings
In the tone settings menu the tone
characteristics can be set for each
radio waveband and each audio
player source.
Press TONE to open the tone menu.
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88IntroductionSetting bass, middle and trebleSelect Bass:, Midrange: or Treble: .
Set the desired value for the selected
option.
Setting the volume distribution
between front - rear
Select Fader:.
Set the desired value.
Setting the volume distribution
between right - left
Select Balance: .
Set the desired value.
Setting an individual setting to "0" Select the desired option and press
and hold the multifunction knob for a
few seconds.
Setting all settings to "0" or "Off"
Press and hold TONE for a few
seconds.Optimizing the tone for the style of
music
Select EQ: (Equalizer).
The displayed options offer optimized
bass, middle and treble presettings
for the relevant style of music.
Select the desired option.
Volume settings
Maximum startup volume
Press CONFIG to open the system
settings menu.
Select Audio settings and then Start
up volume .
Set the desired value.
Speed compensated volume Press CONFIG to open the system
settings menu.
Select Audio settings and then Auto
volume control .
Speed compensated volume can be
deactivated or the degree of volume
adaptation can be selected in the
menu displayed.Select the desired option.
Volume of the traffic
announcements (TA)
The volume of the traffic
announcements can be increased or
reduced proportionate to the normal
audio volume.
Press CONFIG to open the system
settings menu.
Select Audio settings , RDS options
and TA volume .
Set the desired value for the volume increase or reduction.