Page 14 of 131

14Introduction
or close call list ...................... 63or activate/deactivate mute ...14
or activate voice pass-thru (if supported by phone) .........56Usage
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 central control unit on the instrument panel 3 8
■ controls on the steering wheel 3 8
■ the speech recognition system 3 56.
Notice
Only the most direct ways for menu operation are described in the
subsequent chapters. In some
cases, there may be other options.
Switching the Infotainment
system on or off
Press the X knob briefly. After
switching on, the last selected
Infotainment source becomes active.Automatic switch-off
If the Infotainment system is switched
on using the X knob while the ignition
is switched off, it switches off again
automatically after 10 minutes.
Setting the volume Turn the X knob. The current setting
is shown in a pop-up at the bottom of
the screen.
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 volume settings can be
set separately:
■ the maximum start-up volume 3 20
■ the volume of the traffic announcements 3 20
■ the volume of the navigation messages 3 39.
Page 86 of 131

86Introduction
or activate/deactivate mute...86
or deactivate speech
recognition .......................... 111Usage
Control elements
The Infotainment system is operated
via function buttons, multifunctional
knobs and menus that are shown on
the display.
Inputs are made optionally via: ■ the central control unit in the instrument panel 3 80
■ controls on the steering wheel 3 80
■ the speech recognition system 3 111
Switching the Infotainment
system on or off
Press the X knob briefly. After
switching on, the last selected
Infotainment source is active.
Automatic switch-off
If the Infotainment system has been
switched on using the X knob when
the ignition was switched off, it will switch off again automatically after
30 minutes.Setting the volume
Turn the X knob. The current setting
is shown on the display.
When the Infotainment system is
switched on, the last selected volume is set, provided that volume is lower
than the maximum start-up volume.
The following can be set separately: ■ the maximum start-up volume 3 93
■ the volume of the traffic announcements 3 93
Speed compensated volume
When speed compensated volume is
activated 3 93 the volume is
adapted automatically to make up for
the road and wind noise as you drive.
Mute
Press the PHONE button (if Phone
portal is available: press for a few
seconds) to mute the audio sources.
To cancel mute again: turn the X
knob or press the PHONE button
again (if Phone portal is available:
press for a few seconds).
Page 94 of 131

94IntroductionPersonalisation(only with CD 400plus)
Various Infotainment system settings
can be separately memorised for
each vehicle key (driver) of the car.
Memorised settings
By removing the vehicle key from the
ignition switch the following settings
are automatically saved for the key being used:
■ last volume settings; one volume level for all non-phone audio
sources (radio, CD player, AUX,
USB) and one for phone audio
■ all radio station presets
■ all tone settings; each of these settings are separately saved foreach of the following audio
sources: AM, FM, DAB, CD player,
AUX, USB
■ last active audio source
■ last active radio station (separately for each waveband)
■ last active display mode■ last position in Audio/MP3 CD including track number and folder
■ state of shuffle songs setting (CD player)
■ state of TP (Traffic Programme) setting
■ cursor position for each menu on the display
Activating/deactivating
personalization
Press the CONFIG button to open the
system settings menu.
Select Vehicle settings and then
Comfort settings .
Set Personalization by driver to On or
Off .