Page 14 of 171

14Introductionor close call list ...................... 16or activate/deactivate mute ...14
or deactivate speech
recognition ............................ 53Usage
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 53
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 X briefly. After switching on,
the last selected Infotainment source becomes active.Automatic switch-off
If the Infotainment system is switched on pressing X while the ignition is
switched off, it switches off again
automatically after 10 minutes.
Setting the volume Turn X. 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 19
● the volume of the traffic announcements 3 19
● the volume of the navigation messages 3 37
Page 88 of 171

88Introductionor activate/deactivate mute...88
or deactivate speech
recognition (if available) ......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 82
● controls on the steering wheel 3 82
● the speech recognition system 3 111
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 using 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 volume is lower
than the maximum start-up volume.
The following can be set separately: ● the maximum start-up volume 3 95
● the volume of the traffic announcements 3 95
Speed compensated volume
When speed compensated volume is activated 3 95 the volume is
adapted automatically to make up for
the road and wind noise as you drive.
Mute
Press 7 / i (if Phone portal is
available: press for a few seconds) to
mute the audio sources.
To cancel mute again: turn X or press
7 / i again (if Phone portal is
available: press for a few seconds).
Page 137 of 171

Introduction137Usage
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 3 134
● audio controls on the steering wheel 3 134
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 3 141
● the volume of traffic announcements 3 141
Speed compensated volume
When speed compensated volume is
activated 3 141, the volume is
adapted automatically to make up for
the road and wind noises as you
drive.
Mute function
Press 7 / i or i (if Phone portal
available: press for a few seconds) to mute the audio sources.To cancel the mute function: turn m or
press 7 / i (if Phone portal available:
press for a few seconds) or press i
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
the waveband menus with options for the station selection.
For a detailed description of the radio functions 3 142.
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.