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182 Controls in detail
Audio system
Instrument cluster multifunction 
display
This section describes features and con-
trols via the audio control unit, display and 
controller only.
Please refer to the “Instrument cluster 
control system” section of this manual 
(
page 151) for function descriptions and 
operation of the instrument cluster multi-
function display and multifunction steering 
wheel buttons as they relate to audio func-
tions described in this section.Audio controller
1Audio controller
The menu functions are selected on the 
audio display using the audio controller. 
For this purpose, a selector bar is moved.
In this way, you can open menus or lists, 
move within menus or lists, and quit 
menus or lists.
Operating audio controller
The audio controller features the following 
options:
press briefly or press and hold n
rotate to the left or right ymz
slide to the left or right omp
slide up or down qmr
iYou cannot operate the audio system via the 
audio controller when the protective cover is 
closed. 
         
        
        
     
        
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185 Controls in detail
Audio system
Menu
The illustration below shows the structure 
of the modes and their menus.Each mode has a basic menu. In the menu 
line of the basic menu display are several 
menu items listed.Each menu item in turn has several sub-
menu items.
ButtonMode/Basic menuMenuPage
bRadioRadio (FM/AM)194
Weather Band194
Sat Radio*200
Presets198
Sound189
éDiscCD/MP3208
Track list/folder list219
CD changer*214
Sound189
hTelephone*Telephone*222
Name233
Call lists236
êSystemSystem192
Language193 
         
        
        
     
        
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186 Controls in detail
Audio system
Calling up an operating mode
Press the respective button 
(b,é,h,orê) on the 
audio control unit.
The basic menu of the selected mode 
appears in the audio display. The main 
area is active.
The active area is highlighted.
Illustration: radio function basic menu
Moving to the menu bar: Slidemr.Horizontal menus
Moving through the menu bar: 
Slideomp or rotate ymz.
A white bar under the menu indicates 
the selected menu.
Confirm the selected menu item: 
Press n.
Exiting the menu bar without con-
firming a selection: Slide qmin the 
opposite direction of the list orienta-
tion.
or
Press buttoní.Vertical submenus
Moving through the menu: 
Slideqmr or rotate ymz.
A white bar under the submenu indi-
cates the selected submenu.
Confirm the selected submenu 
item: Press n.
Exiting a menu without confirming a 
selection: Slide ompin the opposite 
direction of the list orientation.
or
Press buttoní.
iThe following screens show the audio dis-
play's day design. The appearance of the high-
lighted items in the menu will vary depending on 
the display design. 
         
        
        
     
        
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188 Controls in detail
Audio system
Operation
In the following descriptions, an operation 
step is described as in example below.
b Radio  Enter Frequency 
is the short for
Press buttonb on audio control 
unit repeatedly until desired waveband 
has been selected.
Slidemr.
Slideomor rotate ymz the audio con-
troller to select 
Radio.
Press the audio controller n.
The 
Radio menu is selected and a list of 
submenus appears.
Slideqmor rotate ymz the audio con-
troller to select 
Enter Frequency.
Press the audio controller n.
The 
Enter Frequency submenu is 
selected and appears in the audio 
display.Switching audio system on or off
Rotary control/push buttono
1Push buttono
2Rotary control
Switching on: Press push 
buttono.
or
Open the audio display cover.
or
If the audio system was on as you 
switched off the ignition, turn the 
SmartKey in the starter switch to 
position2.The audio system will come back on 
with the last selected function.
Switching off: Press push 
buttono.
or
Turn the SmartKey in the starter switch 
to position0.
iIf the audio system is switched on without 
the SmartKey in the starter switch, it will 
automatically switch off again after 
approximately 30 minutes.
If your vehicle is equipped with a telephone*, the 
audio display may prompt you to enter your PIN 
(GSM network) or passcode (CDMA network).
iShould excessively high temperatures occur 
while the audio system is being operated, 
HIGH TEMP will appear in the audio display, after 
which the audio system will be switched off for a 
cooling-down period.
iWhen you switch off the audio system, you 
also switch off the currently playing audio source 
and the telephone* operating via audio control 
unit is not possible. 
         
        
        
     
        
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189 Controls in detail
Audio system
Adjusting volume
Rotary control/push buttono
1Push buttono
2Rotary control
Adjusting: Turn rotary control2.
The volume will increase or decrease 
depending on the direction turned.Adjusting volume for telephone calls
In hands-free mode, you can adjust the vol-
ume of a telephone call while the call is 
currently active.
During a telephone call:
Turn rotary control2.
The volume will increase or decrease 
depending on the direction turned.
Sound
To switch on/off: Press button F 
on the audio control unit (
page 177).
The sound of the current audio source 
is switched on or off.Selecting sound settings
You can select different sound settings for 
each individual audio source. The particu-
lar 
Sound menu can be opened from the 
basic menu for the desired operating 
mode, or by pressing the TONE button on 
the audio control unit.
Example:
b  
Sound  Bass
Adjusting bass or treble
Press TONE button repeatedly until 
Bass or Treble appears in the audio 
display.
or
Select SoundBass or Treble.
The setting last selected is indicated by 
an red pointer.
iThe volume of the audio system or a tele-
phone call can also be adjusted by pressing the 
æ or ç button on the multifunction steer-
ing wheel (
page 158).
iWhen the sound is switched off, the 
symbolF appears in the status line.
If you change the audio source, or alter the vol-
ume, the sound is automatically switched on 
again.
 
         
        
        
     
        
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192 Controls in detail
Audio system
SYS menu
SYS settings menu overviewDisplay settings
You can adapt the brightness of the audio 
display to the prevailing light conditions.
Setting the display design
ê  System  Display.
Select Brightness, Day Mode, Night 
Mode
 or Automatic.Bluetooth
® settings
General information about Bluetooth
®
Bluetooth® technology is the standard for 
short-range wireless technologies, suitable 
for transmitting voice and data. It is possi-
ble to connect Bluetooth
® devices wire-
lessly. Bluetooth® can be used to 
exchange vCards or make calls using a 
hands-free device.
Bluetooth
® technology uses the freely 
available ISM (Industrial Scientific Medi-
cal) wireless network that works at 
2.45 GHz. Ranges of up to ten meters are 
possible with Bluetooth
®.
MenuPage
System
Display
Brightness
Day Mode
Night Mode
Automatic
192
Activate Bluetooth®192
Reset 193
Language193
iWhen you select Brightness, a scale ap-
pears on which you can set the brightness 
manually.
In the 
Automatic setting, the audio system an-
alyzes the automatic vehicle light sensor and 
switches between the display designs automati-
cally. 
         
        
        
     
        
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196 Controls in detail
Audio system
Switching to radio mode 
Press buttonb on audio control 
unit.
The radio basic menu appears in the 
audio display once you have switched 
to radio mode. You will hear the 
station/channel last tuned in the previ-
ously selected waveband, provided 
that the station/channel can be re-
ceived. 
Illustration: radio mode in FM waveband
1Status line
2Station name
3Store position of station
4Main area with wavebandInformation displayed in the status line 
(example)
The following information is displayed in 
the status line:
Time (04:38)
Station name (WNYC)
Mobile phone readiness is indicated by 
additional information being shown:
Mobile phone network signal 
strengthI
Receiver symbol 4 ö.Calling up wavebands
You can choose from among the FM, AM 
and WB wavebands and then request the 
Sat mode*. Pressing again will switch back 
to FM radio mode.
Press buttonb on audio control 
unit repeatedly until desired waveband 
has been selected.
The FM, AM, and WB wavebands and 
the satellite radio* mode are called up 
one after another.
The waveband currently selected 
appears in the status line of the audio 
display. The last selected station in the 
selected waveband is heard.
iStation names 3, available for the FM 
waveband, can only be seen when the station 
transmits a name.
In the WB waveband, the audio system displays 
the channel number, e. g. Channel 6, instead of 
the station names and/or frequency.
WavebandFrequency
WB (Weather Band)Weather channels
FM87.7......107.9 MHz
AM530.......1 710 KHz 
         
        
        
     
        
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198 Controls in detail
Audio system
Tuning to a station by entering the fre-
quency manually
b Radio  Enter Frequency 
The menu for manual frequency entry 
appears.
or
Press buttonó, on the keypad in 
audio control unit briefly.
Enter frequency with keypad: 
Enter desired frequency with 
buttons1to R, with the keypad 
in audio control unit briefly.
The audio system tunes in to the fre-
quency entered.
Exiting menu without making an en-
try: Press button í in the center 
console (
page 184).Storing stations
You can store ten AM and ten FM stations 
in the memory.
Storing stations manually with keypad
Tune in desired station.
Basic menu is shown in the audio 
display.
Press and hold desired station 
button1 to R until a brief signal 
tone sounds.
The station is stored.
iThis function is not available for Weather 
Band.
iIt is not possible to enter a frequency in the 
respective waveband which is outside the fre-
quency range.
iIf you select a memory preset which is al-
ready in use, it will be overwritten by the new 
station.