Page 26 of 106
Rear Seat Entertainment
Components
Overview The Rear Seat Entertainment System includes:
R two rear-compartment screens behind the front-seat head restraints
R a remote control
R a CD/DVD drive
R AUX jacks on both screens (display AUX) and on the CD/DVD drive (drive AUX)
R two sets of cordless headphones
Rear-compartment screens 0043
AUX jacks, detailed view in the "CD/DVD drive and AUX jacks" section (Y page 26)
0044 Display 24
Rear Seat EntertainmentAt a glance
Page 28 of 106
Switching the sound on or off
X
Press button 0084on the remote control.
The sound is on or off.
Selecting a menu/menu item and con-
firming your selection X
Select a menu/menu item using the
0059006500630064 buttons on the
remote control and press the 008Bbutton to
confirm. CD/DVD drive and AUX jacks
The CD/DVD drive is located in the center
behind the front seats. 0043
CD/DVD slot
0044 AUX, right-hand (R) jack for audio signal
0087 AUX, left-hand (L) jack for audio signal
0085 AUX, jack for video signal (V)
0083 CD/DVD eject button
The AUX jacks shown are for the AUX drive.
Identical jacks can be found on the right-hand
side of the rear-compartment screens (AUX
display) (Y page 24). 26
Rear Seat EntertainmentAt a glance
Page 29 of 106

Cordless headphones
Overview 0043
Volume control
0044 Selects a screen for the headphones
0087 Battery compartment cover
0085 Switches the cordless headphones on/off
0083 Indicator lamp with various displays (Y page 27)
X Open both sides of the headphones and adjust the fit of the headphones by pulling the
headphone band in the direction of the arrow.
Switching the cordless headphones
on/off X
Press button 0085.
Depending on the previous status, the
headphones are switched on or off.
To save the battery, the headphones are
switched off automatically if they do not
receive an audio signal within three
minutes.
Adjusting the volume of the head-
phones X
Turn volume control 0043until the desired
volume has been set.
i If you have connected corded head-
phones to a rear-compartment screen, you can adjust the volume by pressing buttons
006B on the remote control (Y page 25).
Selecting a screen for the headphones X
Move push slider 0044toL(left-hand screen)
or R(right-hand screen).
Indicator lamp displays The color of the indicator lamp shows
whether the headphones are switched on or
off and indicates the charge level of the bat-
teries inserted. Rear Seat Entertainment
27At a glance
Page 30 of 106
LED dis-
play Status
Green The batteries are fine.
Red The batteries are almost dis-
charged.
Lit contin-
uously The headphones are switched
on and connected to a screen.
Flashing The headphones are search-
ing for the connection to a
screen.
No display
(dark) The headphones are switched
off or the batteries are dis-
charged.
Connecting additional headphones
You can connect one additional set of corded
headphones to each of the two rear screens
(Y
page 24). The socket is designed for head-
phones with a 3.5 mm stereo jack plug and
an impedance of 32 ohms. Changing batteries
Batteries are required for the remote control
and for the two sets of cordless headphones.
For changing batteries, see (Y page 88).28
Rear Seat EntertainmentAt a glance
Page 35 of 106

Further information on telephone mode
(Y page 43).
Bluetooth ®
is a registered trademark of Blue-
tooth Special Interest Group (SIG) Inc. Activating/deactivating Bluetooth
®
X To call up the basic menu: press0066.
X Switch to the submenu bar by sliding 00520064
the controller.
X Select Settings
Settings using the controller (slide
009500520096 or turn 00790052007A) and press 0098to confirm.
X Select Activate Bluetooth
Activate Bluetooth using the
controller (slide 00C500520097) and press 0098to
confirm.
This switches Bluetooth ®
on 0073 or off 0053.
Audio 20 is now ready to utilize Blue-
tooth ®
functions, such as receiving data
from other devices or connecting mobile
phones. System language settings
X To call up the basic menu: press0066.
X Switch to the submenu bar by sliding 00520064
the controller.
X Select Settings
Settings using the controller (slide
009500520096 or turn 00790052007A) and press 0098to confirm.
X Select Language Language using the controller (slide
0097005200C5 or turn 00790052007A) and press 0098to con-
firm.
X Select the desired language and press 0098
to confirm.
The menu system is shown in the selected
language. Reset function
i You can reset Audio 20 to the factory set-
tings. Among other things, this will delete
all personal data (e.g. phone book entries),
and all system settings are returned to the
factory settings. A system reset is recom-
mended, e.g. before selling the vehicle.
X To call up the basic menu: press0066.
X Switch to the submenu bar by sliding 00520064
the controller.
X Select Settings Settings using the controller (slide
009500520096 or turn 00790052007A) and press 0098to confirm.
X Select Reset Resetand press 0098to confirm.
A prompt appears asking whether you wish
to reset.
X Select Yes YesorNo
No.
If you select Yes
Yes, a prompt will appear again
asking whether you really wish to reset.
X Select Yes
YesorNo
No and press 0098to confirm.
If you select Yes
Yes, Audio 20 will be reset and
restarted. Reset function
33System settings
Page 38 of 106

Audio system features
i These Operating Instructions describe all
standard and optional equipment available
for your audio device at the time of going
to print. Country-specific deviations are
possible. Please note that your audio equip-
ment may not offer all the features descri-
bed. Seat functions
Overview
The possible settings depend on the type of
seat and the vehicle model series. For M-
Class and GL-Class vehicles with multicon-
tour seats, you can call up the following
adjustment functions:
R seat cushion length
R backrest side bolsters
R lumbar
R massage Selecting the seat
First select the seat which you wish to adjust.
X Option 1: press the 0050button next to the
controller.
X Option 2: press the 0066button.
X Select Seat
Seatand press 0098to confirm. X
To switch to the lower line, for both options
slide 00520064the controller.
X Select Driver's Seat Driver's Seat orPassenger
Passenger
Seat
Seat by turning 00790052007Athe controller and
press 0098to confirm. Adjustment functions
Adjusting the seat cushion This function allows you to adjust the length
of the seat cushion.
X
Select the seat (Y page 36).
X Select Seat Surface Seat Surface by turning00790052007Athe
controller and press 0098to confirm.
A scale appears. X
Turn 00790052007A or slide 009700520064the controller and
press 0098to confirm.
X To exit the menu: press the0038back
button.
Adjusting the seat contour in the lum-
bar region of the seat backrest This function allows you to adjust the air
cushions in the lumbar region of the backrest
(4-way lumbar support).
X
Select the seat (Y page 36).
X Select Lumbar Lumbar by turning 00790052007Athe control-
ler and press 0098to confirm.
A crosshair appears. You can make two
settings: 36
Seat functionsVehicle functions
Page 39 of 106

R
Vertical: to move the point of greatest
lumbar support up or down
R Horizontal: to adjust the amount of sup-
port X
Slide 009700520064 or009500520096 the controller and press
0098 to confirm.
X To exit the menu: press the0038back
button.
Adjusting the sides of the seat backrest
(backrest side bolsters) X
Select the seat ( Ypage 36).
X Select Seatb. Sides Seatb. Sides by turning00790052007Athe
controller and press 0098to confirm.
A scale appears. X
Turn 00790052007A or009700520064 slide the controller and
press 0098to confirm.
X To exit the menu: press the0038back
button. Massage function X
Select the seat ( Ypage 36).
X Select Massage
Massage by turning 00790052007Athe con-
troller and press 0098to confirm.
A list appears.
You can select different types of massage
function:
R 0: Off 0: Off
R 1: Slow and Gentle
1: Slow and Gentle
R 2: Slow and Vigorous
2: Slow and Vigorous
R 3: Fast and Gentle
3: Fast and Gentle
R 4: Fast and Vigorous
4: Fast and Vigorous X
Turn 00790052007A or slide 009700520064the controller and
press 0098to confirm.
The massage function runs for approx-
imately 15 to 25 minutes, depending on the
setting.
X To exit the menu: press the0038back
button. Resetting all adjustments
X Select the seat ( Ypage 36).
X Select Reset Reset All
Allby turning 00790052007Athe con-
troller and press 0098to confirm.
A prompt appears. Seat functions
37Vehicle functions
Page 45 of 106

Function restrictions
The telephone is not ready for use in the fol-
lowing situations:
R The telephone automatically tries to log on
to a network. If no network is available, you
may not be able to make a " 911" emer-
gency call. If you attempt to make an out-
going call, the No Service
No Service message will
appear for a short while.
If Audio 20 is switched off during a call in
hands-free mode, the call is disconnected.
You can prevent this as follows: before
switching off Audio 20, switch the mobile
phone to "Private mode" (see the mobile
phone operating instructions). "911" emergency call
The 911 emergency call is a public service.
Using it without due cause is a criminal
offense.
The following requirements must be fulfilled
for a 911emergency call:
R the mobile phone must be switched on.
R a network must be available.
R a valid and operational SIM card must be
inserted in the mobile phone.
R the mobile phone must be connected to
Audio 20 via Bluetooth ®
.
If you cannot make an emergency call, you
must arrange rescue measures yourself.
X Enter numbers on Audio 20 (Y page 50).
X Press 0061.
The telephone makes the connection.
X Wait until the emergency call center
answers and describe the emergency sit-
uation. Telephony via the Bluetooth
®
inter-
face Prerequisites
To use Bluetooth ®
interface telephony in con-
junction with Audio 20, you need a Blue-
tooth ®
-capable mobile phone.
On Audio 20
X Activate the Bluetooth ®
function on
Audio 20 (Y page 33).
On the mobile phone
X Switch on the mobile phone and enter the
PIN when prompted to do so (see the
mobile phone operating instructions).
X Activate Bluetooth ®
functions and, where
necessary, Bluetooth ®
visibility on the
mobile phone (see the mobile phone oper-
ating instructions).
The battery of the mobile phone should
always be kept sufficiently charged in order
to prevent malfunctions.
In preparation for telephoning via the Blue-
tooth ®
interface, you should check the fol-
lowing items on your mobile phone (see the
mobile phone operating instructions):
R Hands-Free Profile
The mobile phone must support Hands-
Free Profile 1.0 or above.
R Bluetooth ®
visibility
On some mobile phones, it is not enough to
activate only the Bluetooth ®
function. Your
device must also be made "visible" to other
devices (see the mobile phone operating
instructions).
This visibility is for restricted periods of
time on some mobile phones.
R Bluetooth ®
device name
Every Bluetooth ®
device has its own Blue-
tooth ®
device name. This device name is
freely definable, but can be identical for all
devices from the same manufacturer. It is
therefore recommended that you change
this name so that you can easily recognize Telephony via the Bluetooth
®
interface 43Telephone Z