USB connection to AMI (input for
video files)

Video inputs on J794

16

FBAS lead (+)
Video input from J772

MOST bus connection
Video input from TV Tuner R78
and DVD Changer R161

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MMI® display
Front Information Display Control Module J685

MOST bus

LVDS lead

TV tuner
R78 (not for the North American region)

Information Electronics Control Module 1 J794

FBAS+
FBAS lead

FBAS-

USB lead

FBAS lead

AMI connector

Rear View Camera System Control Module J772

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Schematic diagram of video transmission to J794

17

Multimedia System Control Head E380
Two different versions of Multimedia System Control Head
E380 are available in the North American market. To allow
even more intuitive operation, the number of buttons on the
control units has been optimized compared to the previous
systems. There are now two new rocker buttons which can be
used to choose between two menus in each case.

If the vehicle is equipped with the High-spec MIB system
(MMI® navigation plus, MMI® navigation plus with Audi
connect), the left rocker button is used to choose between
Telephone and Navigation. The rotary push button is larger
than that used on the MIB Standard version.

The volume control also has a right/left rocker action. It can
be used to skip backwards or forwards to the previous/next
track on the Music menu, for example.

Integrated in the rotary push-button is the touch-sensitive
input zone (Audi MMI® touch). This can be used to control
the following functions:

The control panels are connected to Information Electronics
Control Module 1 J794 via a private CAN bus.

•

If the vehicle is equipped with MIB Standard (MMI® radio),
the following functions are available:

•
•
•
•

•
•
•

Entry of letters, numbers and characters using automatic handwriting recognition
Scrolling through album covers
Operating DVD main menu
Moving the navigation map

The combination of rotary push-button and MMI® touch is
also referred to as the "touchwheel".

Tone
CAR
Phone
Media

MMI® Standard control panel

High-spec control panel on vehicles with NAV
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(Audi MMI® touch is standard)

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Key combinations for service on E380
System reset

Engineering menu

To restart (reset), the following buttons must be briefly
pressed simultaneously:

The Engineering menu is required, for example, to install a
software update. To access the menu, the following buttons
must be pressed one after the other and held down:

•
•
•

Rotary push button
Top right soft key
MENU

•
•

BACK
Top left softkey

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Button combination for system reset
18

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Button combinations for the Engineering menu

Screenshot
Screenshots of the current MMI display can be taken and
saved. To save them, an SD card must be inserted in the SD
card reader. There are different procedures depending on the
MMI system installed in the vehicle.

After inserting an SD card into the SD reader, press and hold
the following keys one after another.

•
•

The bottom left soft key
The bottom right soft key

The display screen will turn white when the screenshot
is being saved to the SD card.

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MMI® Standard control panel

Press and hold the following keys one after another.

•
•

The bottom left soft key
The bottom right soft key

The display screen will turn white while the screenshot
is being saved. The screenshots are saved to the solid state
drive (SSD) on these systems.
To download these screenshots, two special script files must
first be loaded on an SD card. When the SD card is inserted
into the SD reader, the screenshots will download automatically. When they have finished downloading, the following
text message will be displayed on a green background:
completed successfully

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MMI Navigation plus
MMI Navigation plus with Audi connect

There is only space for 50 screenshots allotted on the SSD.
The 51st screenshot will overwrite the first screen shot
taken and so on.
The script files needed to download screenshots from
these systems will be made available to the dealer network
at a later date.

19

Network systems
Information Electronics Control Module 1 J794 is connected
to Data Bus On Board Diagnostic Interface J533 via the Information/Entertainment CAN on all versions of the MIB. This is
a high speed bus with a data transfer rate of 500 kbit/s.

If Digital Sound System Control Module J525 is installed, the
system is also equipped with a MOST bus. This is the first
time an Audi vehicle will have both the Information/Entertainment CAN and the MOST bus.

For the first time, Front Information Display Control Head
J685 and Multimedia System Control Head E380 are connected to J794 via a private CAN bus. This is also a high
speed bus with a data transfer rate of 500 kbit/s.

Due to the combination of the information/entertainment
CAN and the MOST bus, a break on the MOST bus does not
result in complete failure of the MMI®. All functions which
are carried out directly on the J794 remain available.
However, audio signal output via an external amplifier
would not be possible.

Multmedia System
Control Head E380

Front Information Display
Control Head J685

Digital Sound System
Control Module J525

Instrument Cluster Control
Module J285

Data Bus On Board
Diagnostic Interface J533

Information Electronics
Control Module 1 J794

DVD changer R161

TV tuner R78
(not for the North
American market)

Rearview Camera System
Control Module J772

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Information/entertainment CAN
Sub-bus system (private CAN bus)
MOST bus
CAN bus system to which J285 and
J533 are both connected

20

Optical data bus system MOST150
History
The first optical data bus, MOST25, was introduced on the
2004 Audi A8. The data bus system was named after a group
known as the "Media Oriented Systems Transport (MOST)
Cooperation". This group is made up of various automobile
manufacturers, their components suppliers and software
companies, who joined forces to create a standardized highspeed data transfer system.

The term "Media Oriented Systems Transport" refers to a
network designed for transmission of media-based data.
This means that, unlike in the CAN data bus, address-oriented messages are sent to a specific recipient. This technology is used in Audi vehicles to transfer data within the infotainment system. The data transfer rate on the MOST25 bus
is approximately. 25 Mbit/s.

MOST150
With the arrival of the Modular Infotainment System, the
MOST150 is being used by Audi for the first time. This
developmental stage in MOST technology is six times faster
than the MOST25 bus. The development process necessitated various modifications to MOST components. The transmitter and receiver units had to be adapted, for example.
Other components such as the optical connectors, the
fiber-optic cables or the electrical connectors for the control
units are identical to those for the MOST25.

With the advent of the MOST150, the video signal from the
DVD Changer R161 is transmitted directly via the optical
data bus for the first time. A separate FBAS connection on
J794 as with the MOST25 is no longer installed.

System and diagnostics manager
With the Modular Infotainment System, a maximum of five
control units are connected to the MOST bus:

•
•
•
•
•

With the MIB, J794 performs the function of the system
manager for the MOST bus as well as being the diagnostics
manager. That was previously the job of J533.

Information Electronics System Control Module 1 J794
Digital Sound System Control Module J525
TV tuner R78 (not for the North American market)
DVD changer R161
Instrument Cluster Control Module J285

Diagnosis
The Address Word for J794 is 5F. It is the same for all MIB
versions.
The Modular Infotainment System J794 is also the diagnostics manager for ring break diagnosis.

Ring break diagnostics
The procedure for ring break diagnosis is the same as with
the previous MOST bus system. However, with the MIB, the
testing program for ring break diagnosis is accessed using
Address Word 5F.
Although the ring break diagnosis sequence has remained
the same, new special tool VAS 6778 must be used.

Optical substitute control unit VAS 6778

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21

Bluetooth interfaces
The Modular Infotainment Platform offers two different ways
of using a phone and other Bluetooth devices in the car. They
are:

•
•

Bluetooth interface for MMI® radio
Bluetooth interface for MMI® navigation plus and MMI® navigation
plus and Audi connect

HFP

A2DP

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Simultaneous connection of two devices to MMI® using Bluetooth

Bluetooth interface for MMI® radio
Using the Bluetooth interface, a mobile phone can be paired
with the MMI® by means of the Hands-Free Profile (HFP). With
this connection method, the mobile phone's address book is
also imported using the Phonebook Access Profile (PbAP*).
Using the voice control facility, drivers can make phone calls
without taking their hands of the steering wheel.

The Bluetooth-enabled device can also be controlled via the
AVRCP* Bluetooth profile. The AVRCP specification supported by the MIB is 1.3.

The Bluetooth interface also supports Bluetooth audio streaming. This requires connection of a Bluetooth-enabled device to
the MMI via the A2DP Bluetooth profile.

The PR number for the Bluetooth interface is 9ZX.

!

If a mobile phone is connected using HFP, a second device
can be simultaneously connected using A2DP.

Note
The functions of the telephone option 9ZX are also supported by options 9ZE and 9ZK.

Reference
Information on which functions of various mobile terminal devices are supported by Audi vehicles can be found
in the database for mobile terminal devices at www.audi.com/bluetooth
22

Bluetooth interface for MMI® navigation plus and MMI® navigation
plus with Audi connect
If a vehicle is equipped with MMI® navigation plus, Information Electronics Control Module 1 J794 is not equipped with
a telephone module. If a vehicle is equipped with MMI® navigation plus with Audi connect, Information Electronics
Control Module 1 J794 is equipped with a telephone module
and a SIM card reader.
This option also incorporates all the Bluetooth interface
functions. For example, a mobile phone can be connected by
means of the Hands Free Profile (HFP*). In this case, the
telephone module in J794 is not used.
The telephone module installed in the J794 is designed for
GSM* and UMTS* networks. On vehicles with MMI® navigation plus with Audi connect, this is done by inserting a SIM
card in the SIM card reader.
The mobile network standard currently in use is displayed at
the bottom right of the MMI® screen. For the GSM network
it shows 2G and for the UMTS network it shows 3G. If a data
connection is also active, a two-headed arrow also appears.

Telephone module in J794

J794 with SIM card reader

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GSM reception
Data connection
UMTS reception

Indication of mobile phone network

!

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Note
To be able to receive data from the internet for Audi Connect services, the sim card inserted in the J794 must
be activated.

Reference
Information on which mobile phones support the SIM Access Profile can be found in the database for mobile
terminal devices at www.audi.com/bluetooth
23

List of Bluetooth profiles supported

Hands-Free Profile
Bluetooth profile
HFP

Phonebook

SIM Access

Advanced Audio

Message Access

Message Access

Access Profile

Profile

Distribution Profile

Profile for SMS*

Profile for e-mail

PbAP

SAP

A2DP

MAP

MAP

Telephone option
Bluetooth interface (9ZX)
Audi Connect (9ZK)
1)

ü
ü

ü
ü

ü

ü
ü

ü1)

= only with High-spec MIB

Bluetooth profile symbols on Telephone menu

24

ü1)

!

Note
The MMI® only shows the Bluetooth profiles (connections) supported by the mobile phone.

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Audi Connect
Overview
Audi connect is a wireless/internet-based system which
brings together applications that connect present-day and
future Audi models with the internet. Audi connect brings
the benefits of an increasingly networked world into the
vehicle; services supported by Audi connect are tailored for
in-vehicle use. They offer the driver more information with a
great level of precision, permit intuitive operation through
MMI® Navigation plus interface and can make driving even
more comfortable.

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25

Audi connect requirements

The following requirements must be met in order to use Audi
connect services:

•

Audi MMI® Navigation plus with Audi connect

•

The vehicle must be in an area covered by the current service
provider.

•

A SIM card configured for Audi connect services with a data
package from the current service provider must be inserted in
the SIM card reader.

Communication with the internet is via the integral roof
antenna, over the vehicle’s own UMTS or LTE* data module.
One advantage of the integral roof antenna is that it provides the best connection possibility when driving.

Audi connect advantages

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•

Always online: the internet connection is wireless.

•

•

Relevant content: Audi connect in the vehicle
exclusively delivers applications and services that
enhance driving pleasure and comfort.

More information: the vehicle’s connectivity provides access to real-time information, such as weather
and news.

•

More comfort: many services make driving simpler
because they are tailored entirely to the everyday processes that need to be carried out in the vehicle - for
example, navigation.

•

More infotainment: access to the wide range of
online based services permits an almost limitless selection of entertainment and information sources.

•

More communication: Audi connect makes it
possible to stay in touch even while driving.

•

Speed: UMTS and LTE assure swift data transmission
and are also capable of handling complex, data intensive
services.

•

Intuitive control: all Audi connect services must
meet the criterion of being easy to operate, while assuring high driving safety.

Audi connect availability
Audi connect is available to the customer in the following
models:

•

MMI® 3G+ system: Audi A4, A5, A6, A7, A8, Q5, Q7

•

Modular infotainment platform (MIB) system: Audi A3

With the introduction of the MIB on the 2015 Audi A3, more
features are available to the customer.

26