SDARS HD radio
(QV3)

SDARS HD radio
(QV3)

Bang & Olufsen Sound System
(9VS)

Bang & Olufsen Sound System
(9VS)

The MMI Radio can only play back AAC files only if the optional Audi music interface is installed.
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On a world-wide basis, Audi offers three main configuration
levels for the Modular Infotainment Platform:

•
•
•

Entry MIB
Standard MIB
High-spec MIB

Each of the main configurations has its own sub-configurations depending on the optional equipment installed. All of
the MIB configurations use Information Electronics Control
Module 1 J794 as the central processing unit.

Front panel of J794 for Entry MIB

618_003

Front panel of J794 for Entry plus MIB

618_004

Front panel of J794 for Standard MIB,
navigation system version

618_006

Front panel of J794 for Standard MIB, radio version*

618_005

Front panel of J794 for High-spec MIB**

618_007

Front panel of J794 for High-spec MIB
with Audi Connect***

618_008

Depending on version, J794 controls the following functions:

•
•
•
•
•
•
•
•
•
•
•
•

Control of information and entertainment systems
System master and diagnostics master for MOST
Radio tuner
Digital radio tuner (SDARS*)
CD* or DVD* drive
Internal audio amplifier for Audi sound system with 180
watts power (6 channels, 3 x 20W + 3 x 40W) (9VD)
Up to two SD* card readers
Bluetooth interface (HFP*, A2DP* and, with Bluetooth car
phone, also SAP*)
Telephone module and SIM* card reader
Navigation system
Voice control
WiFi hotspot

In the North American market, three versions of the MIB will
be available beginning with the 2015 Audi A3*. They are:

•
•
•

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Standard MIB (Audi MMI® radio*)
High spec MIB (Audi MMI® navigation plus**)
High spec MIB (Audi MMI® navigation plus with Audi
connect***)

Standard MIB
In terms of functionality and specifications, the Standard
MIB is comparable with the RMC Radio Media Center. This
will be marketed in the North American region as Audi MMI®
radio.

J794 for the Standard MIB always has a MOST bus connection. If no optional equipment requiring MOST data transfer
is installed, the MOST connection is unused.

Standard MIB (MMI® radio)
MMI® radio is based on the Standard MIB and offers the
following features:

•
•
•
•
•
•
•
•
•
•

Radio with phase diversity module, FM twin tuner (frequency modulation) and AM tuner (amplitude modulation)
Single CD drive which supports MP3, WMA and AAC* files
An SD card reader for MP3, WMA and AAC files
Car menu
Motorized 5.8-inch color TFT screen with 400 x 240 pixel
resolution
A discrete control panel in the center console
AUX IN socket (UE3)
SDARS Tuner (digital radio) (QV3)
Internal audio amplifier for Audi sound system with 180
watts power (6 channels, 3 x 20W + 3 x 40W) (9VD)
Bluetooth interface for HFP and A2DP (9ZX)

MMI® screen for Standard MIB (Audi MMI® radio)

618_016a

Standard MIB can also be equipped with the following
optional feature:

•

Front panel of J794 for Standard MIB, (Audi MMI® radio) 618_005

Audi music interface (UE7)

The PR number for the Standard MIB is i8D with the suffix 7Q0.
Audi MMI® navigation plus is not available on the Standard MIB
version.

Private CAN High

Information/entertainment CAN High

FM1/AM radio signal input
FM2 radio signal input
SDARS radio signal input
Video output for MMI® display

USB* connection to AMI

Rear panel of J794 for Standard MIB, (MMI® radio)

Private CAN Low
MOST bus connection

Information/entertainment
CAN Low

618_018
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High spec MIB with navigation
The High-spec MIB is the current high-end version of the
Modular Infotainment Platform. Two versions will be available in the North American market. In both versions, Information Electronics Control Module 1 J794 has a MOST bus
connection. If no other optional equipment requiring a
MOST connection is installed on the vehicle, the connection
is not used.
The High-spec MIB represents a consistent step forward
from the 3G + MMI and features new 3D screen views and
SSD (solid state drive).

Front panel of J794 for High-spec MIB without
Audi connect (MMI® navigation plus)

618_007

As mentioned earlier, Information Electronics Control
Module 1 J794 MIB incorporates an Nvidia Tegra processor.
It is a multi-core processor that generates ultra-high resolution graphics as well as offering faster rendering of current
audio and video formats. The Tegra chip requires substantially less energy than previous multimedia processors and
fits perfectly with the Audi efficiency philosophy.
The Tegra chip can display entire cityscapes in three-dimensional views – the driver sees the street that he is driving
along in photo-realistic quality.
The High-spec MIB is also the only version of the MIB that
can play video files directly.

Rear panel of J794 for High-spec MIB

618_027

The High-spec MIB offers the following features:

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

Radio with phase diversity module, FM twin tuner (frequency
modulation) and AM tuner (amplitude modulation)
Single DVD drive for audio and video files
Two SD card readers for audio and video files
SSD solid state drive (64 GB)
Jukebox (approximately 11GB on the 2015 Audi A3)
3D navigation system with navigation data on SSD
(data supplier: Navteq)
Audi MMI® touch
Audi music interface
Car menu
Bluetooth interface for HFP and A2DP
Premium interactive voice control system
Provision of predictive route data
7.0-inch motorized TFT display
Discrete control panel with MMI® touch in center console
AUX IN socket (UE3)
SDARS tuner (NAR spec digital radio) (QV3)
Internal audio amplifier for Audi sound system with 180
watts power (6 channels, 3 x 20W + 3 x 40W) (9VD)

Front panel of J794 for High-spec MIB with Audi connect 618_008
(MMI® navigation plus with Audi connect)

Rear panel of J794 for High-spec MIB
with Bluetooth and Audi connect

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618_029

Networking
Information Electronics Control Module 1 J794 is connected to Data Bus On Board Diagnostic Interface J533 by
the Infotainment CAN bus in all versions of the MIB. It is a
high-speed bus with a data transfer rate of 500 kbits/s.

The MOST bus in the A3 is the new MOST 150 bus capable
of a data transfer rate of 150 Mbit/sec. Information Electronics Control Module 1 J794 acts as both the system
master and diagnostic master for the MOST bus.

Front Information Display Control Head J685 and Multimedia System Control Head E380 are connected to J794 via a
private CAN bus for the first time. This bus is also a highspeed bus with a 500 kbit/sec transfer rate.

With the combination of Infotainment CAN bus and the
MOST bus, an open circuit in the MOST bus will not cause a
total failure of the MMI. All functions which are executed
directly by J794 will remain available. However, audio
would no longer be output via an external amplifier.

When equipped with either the Audi sound system or the
optional Bang & Olufsen sound system, the 2015 A3 will
also have the MOST bus in addition to the Infotainment
CAN bus. This is the first time the Infotainment and MOST
bus have been simultaneously integrated in a vehicle.

Rearview Camera System Control Module J772 is also
connected to control modules J794 and J533 by the Infotainment CAN bus.

Multimedia System
Control Head
E380

Front Information
Display Control
Head J685

Digital Sound
System Control
Module
J525

Data Bus Onboard Diagnostic Interface
J533

Information
Electronics Control
Module 1
J794

Battery Monitoring
Control Module
J367

Alternator
C

Rearview Camera
System Control
Module
J772

610_001_pkd

Key:
Infotainment CAN bus
Sub-bus system
MOST bus
LIN bus

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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 slightly
larger than on the other versions.

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:

•
•
•
•

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

Tone
CAR
Phone
Media

MMI® Standard control panel
618_060

75

•
•
•

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

High-spec control panel on vehicles with NAV
618_062
(Audi MMI® touch is standard)

MMI display
Front Information Display Control Head
J685
The MMI display screen of the 2015 A3 is mounted in the
instrument panel and is retracted electrically. The display
is only 0.4 in (11 mm) thick. This was achieved by attaching
the actual TFT screen directly to its ultra-light magnesium
housing.
There are two versions of the screen with the following
features:

•

5.8“ TFT color monitor with 400 x 240 pixel resolution

•

7.0“ TFT color monitor with 800 x 480 pixel resolution

5.8“ TFT color screen with MMI Radio

618_016a

7.0“ TFT color screen with MMI Navigation plus

618_030a

The operating mechanism for the display has the following
electrical components:

•

Display Opening/Closing Motor V301 (with Hall sensor)

•

Two limit switches - Display Open-Stop Switch F330 and
Display Closed-Stop Switch F331

The number of motor revolutions is registered by the Hall
sensor while the display is extending and retracting and
then evaluated by Information Electronics Control Module
J794. The number of motor revolutions dictates the end
position of the display. In addition, both display limit
switches are evaluated. The display extends and retracts
automatically or if necessary, by pushing Display Unit
Button E506.
If Display Open-Stop Switch F330 is triggered while the
display is extended (for example, by pushing down on the
display)the electric motor is activated and the display
retracts automatically. This safety function lessens the
possibility of damage.

Display Closed-Stop Switch
F331

609_108

609_107

MMI display

Display Opening/Closing Motor
V301

Display Open-Stop Switch
F330

MMI display mechanism

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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.
For the 2015 Audi A3, the vehicle must be equipped with
Audi MMI navigation plus with Audi connect.

New services will be available for the 2015 A3 in addition
to the existing Audi connect services.

618_077b

Previous services and functions include:

•
•
•

Audi traffic information online
Google Earth
WLAN hotspot

New services include:

•
•

Facebook
Twitter

Several services, such as "Google Earth", are already activated and ready for use on delivery of the vehicle. Other
services, such as "Facebook", can only be used after they
have been activated via "myAudi". For this purpose, customers must register online at "myAudi". Customers can
then configure their vehicle here. If the configured vehicle
meets the requirements for Audi connect, additional services available for this vehicle can also be activated.

Audi connect ­— Google Earth

609_096

Audi connect ­— activated additional services

609_097

Reference

For more detailed information about Audi connect, please see eSelf-Study Program 970143, Modular Infotainment Platform (MIB)

77

LTE
On the A3 sedan equipped with MMI Navigation plus with
Audi Connect, the UMTS-enabled phone module once
responsible for telephone and Internet connection has
been replaced by an LTE data module. This means shorter
loading times for Audi connect services and a higher
streaming speed for data from and to the Internet via the
Wi-Fi hotspot.
.
LTE stands for long term evolution and is also referred to as
the fourth generation of mobile communication standards.
The name of LTE denotes that the development of this
standard will continue in the future.

Today, download speeds of up to 100 Mbit /sec are possible. It the future rates as high as 2 Gbit /sec may be
reached.
Basically, LTE technology is based on UMTS. Since high
data rates are achieved with LTE, two independent reception antennas are necessary. These provide the two receivers in the LTE module with cell phone signals. The data
processed by the two receivers is then combined and summarized into a single unit. Then the data is used for the
appropriate application (Google Earth ™, data download via
Wi-Fi hotspot, etc.).

Antennas