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Introduction113Radio receptionRadio reception may be disrupted bystatic, noise, distortion or loss of
reception due to:
● changes in distance from the transmitter
● multipath 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 isworthless to a thief.
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114IntroductionControl elements overviewCD 400plus
Page 115 of 155

Introduction1151 RADIO................................. 122
Activate radio or change
waveband ........................... 122
2 CD ....................................... 134
Start CD/MP3/WMA
playback .............................. 134
3 Search backwards ..............122
Radio: search backwards ...122
CD/MP3/WMA: skip track
backwards ........................... 132
4 Radio station buttons 1...6 ..123
Long press: save station .....123
Short press: select station ..123
5 m......................................... 117
Press: switch on/off ............117
Infotainment system ...........117
Turn: adjust volume ............117
6 Search forwards ..................122
Radio: search forwards .......122
CD/MP3/WMA: skip track
forwards .............................. 1327 AS 1/2................................. 123
Automatic memory levels
(preset radio stations) .........123
Short press: select
autostore list ........................ 123
Long press: save stations
automatically ....................... 123
8 FAV 1/2/3 ............................ 123
Lists of favourites (preset
radio stations) .....................123
9 TP ....................................... 127
Activate or deactivate
radio traffic service ..............127
If Infotainment system is
switched off: display time
and date .............................. 127
10 CD ejection ......................... 132
11 CONFIG .............................. 121
Open settings menu ............12112 INFO ................................... 114
Radio: information on the
currently played station .......122
CD/MP3/WMA:
information on the
currently inserted CD ..........132
13 Multifunction knob ...............118
Turn: mark menu options
or set numeric values .........118
Press: select/activate the marked option; confirm set
value; switch function on/off 118
14 CD slot ................................ 132
15 BACK .................................. 118
Menu: one level back ..........118
Input: delete last character
or entire entry ......................118
16 TONE .................................. 120
Tone settings ...................... 120
17 PHONE ............................... 140
Open telephone main menu 143
Activate mute ...................... 117
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116Introduction18 AUX..................................... 134
Change audio source ..........134Steering wheel audio controls
1qw
Short press: take phone call 140
or dial number in call list .....143
Long press: show call list ....143
2 SRC (Source) ...................... 117
Press: select audio source ..117
With radio active: turn
upwards/downwards to
select next/previous
preset radio station .............122
With CD player active: turn
upwards/downwards to
select next/previous CD/
MP3/WMA track ..................132
With Phone portal active:
turn upwards/downwards
to select next/previous
entry in call list ....................143
With Phone portal active
and calls waiting: turn
upwards/downwards to
switch between calls ...........143
3 w
Increase volume .................. 117
4 ─
Reduce volume ...................117
5 xn
Short press: end/decline
call ....................................... 143
or close call list .................... 143
or activate/deactivate mute . 117
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Introduction117Usage
Control elements
The Infotainment system is operated
via function buttons, a multifunction
knob and menus that are shown on
the display.
Inputs are made optionally via: ● the control panel on the Infotainment system 3 114
● audio controls on the steering wheel 3 114
Switching the Infotainment
system on or off
Press X briefly. After switching on,
the last selected Infotainment source becomes active.
Press X again to turn the system off.
Automatic switch-off
If the Infotainment system is switched
on pressing X while the ignition is
turned off, it will switch off again automatically 10 minutes after the last user input.Setting the volume
Turn m. The current setting is shown
on the display.
When the Infotainment system is
switched on, the last selected volume is set, provided this setting is lower
than the maximum start-up volume
(see below).
The following inputs can be made
separately:
● the maximum start-up volume 3 121
● the volume of traffic announcements 3 121
Speed compensated volume
When speed compensated volume is
activated 3 121, the volume is
adapted automatically to make up for
the road and wind noises as you
drive.
Mute function
Press PHONE (if Phone portal
available: press for a few seconds) to mute the audio sources.To cancel the mute function: turn m or
press PHONE (if Phone portal
available: press for a few seconds).
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
the waveband menus with options for the station selection.
For a detailed description of the radio functions 3 122.
Audio players
Press CD or AUX once or several
times to open the USB, iPod ®
or AUX
main menu (if available) or to switch
between these menus.
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118IntroductionPress the multifunction knob to open
the relevant menus with options for
the track selection.
For a detailed description of CD
player functions 3 131, AUX
functions 3 134, USB port functions
3 135 and Bluetooth music functions
3 138.
Phone
Press PHONE briefly to open the
telephone menu.
Press the multifunction knob to open
the phone menu with options for the
input and selection of numbers.
For a detailed description of the
Phone portal 3 140.
System settings Adjusting the language
The menu texts on the Infotainment
system's display can be displayed in
various languages.
Press CONFIG to open the Settings
menu.
Select Languages in the Settings
menu to display the respective menu.Choose the desired language for the
menu texts.
Notice
For a detailed description of menu
operation 3 118.
Time and date settings
For a detailed description, refer to
your Owner's manual.
Basic operation
Multifunction knob The multifunction knob is the central
control element for the menus.
Turn the multifunction knob: ● to mark a menu option
● to set a numeric value
Press the multifunction knob: ● to select or activate the marked option
● to confirm a set value ● to switch a system function on/offBACK button
Press BACK briefly:
● to exit a menu
● to return from a submenu to the next higher menu level
● to 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
Selecting an option
Page 119 of 155
Introduction119Turn the multifunction knob to move
the cursor (= coloured background) to
the desired option.
Press the multifunction knob to select
the marked option.
Submenus
An arrow on the right-hand edge of
the menu indicates that after
selection of the option a submenu
with further options will be opened.
Activating a setting
Turn the multifunction knob to mark
the desired setting.
Press the multifunction knob to
activate the setting.
Setting a value
Turn the multifunction knob to change the current value of the setting.
Press the multifunction knob to
confirm the set value.
The cursor then switches to the next
value. If all values are set, you are
automatically returned to the next
higher menu level.
Adjusting a setting
Turn the multifunction knob to adjust
the setting.
Press the multifunction knob to
confirm the setting.
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120IntroductionSwitching a function on or off
Turn the multifunction knob to mark
the function to be switched on or off.
Press the multifunction knob to switch
between the settings On and Off.
Entering a character sequence
To enter character sequences, e.g.
PIN codes or telephone numbers:
Turn the multifunction knob to mark
the desired character.
Press the multifunction knob to
confirm the marked character.
The last character in the character
sequence can be deleted by selecting
k on the display or pressing BACK
on the instrument panel. Pressing
and holding BACK deletes the entire
entry.
To change the position of the cursor
in the character sequence already
entered, select ◀ or ▶ on the display.
Tone settings
In the tone settings menu the tone characteristics can be set differently
for each radio waveband and each
audio player source.
Press TONE to open the tone settings
menu.
Setting bass, midrange, and
treble
Scroll through the list and select
Bass , Midrange or Treble .
Set the desired value for the selected
option.
Setting the volume distribution
between front and rear
Scroll through the list and select
Fader .
Set the desired value.
Setting the volume distribution
between right and left
Scroll through the list and select
Balance .
Set the desired value.