Page 12 of 167

12Introduction
1s
Short press: take phone call . 73
or activate speech
recognition ............................ 65
or interrupt a prompt and
speak directly ........................ 65
or open OnStar menu if no
phone connected ..................12
Long press: activate voice
pass-thru (if supported by
phone) ................................... 65
2 n
Press: end/decline call ..........73
or deactivate speech
recognition ............................ 65
or activate/deactivate
mute function ........................ 12For a description of all other controls,
see Owner's Manual.
Usage
Switching Infotainment system
on/off
Press X briefly. After switching on,
the last selected Infotainment source
becomes active.
Automatic switch-off
If the Infotainment system is switched on by 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 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 3 27.
Page 95 of 167

Introduction95Usage
Control elements
The Infotainment system is operated
via function buttons, a touch screen
and menus that are shown on the
display.
Inputs are made optionally via: ● the central control unit in the control panel 3 92
● the touch screen 3 98
● audio controls on the steering wheel 3 92
● the speech recognition 3 117
Switching the Infotainment
system on or off
Press X. After switching on, the last
selected Infotainment source
becomes active.
Automatic switch-off
If the Infotainment system has been
switched on by pressing X while the
ignition is switched off, it will switch off
again automatically 10 minutes after
the last user input.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 it is lower than themaximum start-up volume. For a
detailed description 3 101.
Speed compensated volume
When the speed compensated
volume is activated 3 101, the
volume is adapted automatically to
make up for the road and wind noise
as you drive.
Mute
Press X to mute the Infotainment
system.
To cancel the mute function: press
X again. The last selected volume is
set again.
Modes of operationPress ; to display the home menu.
Notice
For a detailed description of menu
operation via touch screen 3 98.
AUDIO
Select AUDIO to open the main menu
of the last selected audio mode.
Select Source on the screen to
display the interaction selector bar.
Page 136 of 167

136IntroductionSteering wheel audio controls
1qw
Short press: accept phone
call ....................................... 151
or dial number in call list .....154
With Phone portal active
and calls waiting: short
press: switch between calls 154
Long press: activate
speech recognition ..............150
2 SRC (Source) ...................... 136
Press: select audio source ..136
With radio active: turn
upwards/downwards to
select next/previous
preset radio station .............142
With Phone portal active
and call list open: turn
upwards/downwards to
select next/previous entry
in call list ............................. 154
3 w
Increase volume .................. 136
4 ─
Reduce volume ...................136
5 xn
Short press: end/decline
call ....................................... 154
or close call list .................... 154
or deactivate speech
recognition .......................... 150
or activate/deactivate mute . 136Usage
Control elements
The Infotainment system is operated
via function buttons, a MENU 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
● the speech recognition 3 150
Switching the Infotainment
system on or off
Press X briefly. After switching on,
the last selected Infotainment source
becomes active.
Press and hold X again to switch the
system off.
Automatic switch-off
If the Infotainment system is switched
on by pressing X while the ignition is
switched off, it switches off again
automatically after 10 minutes.
Page 164 of 167
164Phone holder
2. Attach the phone holder to thepower connector and press both
locking shifters (4) to lock.
Inserting the phone in the phone holder
1. Press button (2) to disengage
shifter.
2. Insert the smartphone in a way that the power supply of the
smartphone is accessible and no
buttons are pressed.
3. Press down the shifter.
Connecting the smartphone with the power supply
Connect the smartphone to the phone
holder by using the compatible
connecting cable. Different versions
of the connecting cable are available
as accessory.
Operating the smartphone
When the smartphone is connected with the power supply, it will be
charged with ignition on.
For connecting the smartphone with
the Infotainment system, a
Bluetooth ®
connection must be
established.