Self-Study Programme 435 3rd generation Audi MMI system.pdf

Service Training

3rd Generation Audi MMI System

Self Study Programme 435

3rd generation MMI

– Introducing the latest generation of the best system on the market today

–Even higher pe formance and easier operation

Audi is increasing its lead in infotainment technology even further. A new generation of the MMI –

the supreme solution for multimedia, communications and operation – has been unveiled. With a large hard

drive, a DVD drive and its high-speed processors, it has become even more versatile and more powerful.

When the Audi MMI (Multi Media Interface) was launched in the A8 in 2002, journalists and the general public

were unanimous: the Audi concept was the best on the market. With its control knob on the centre tunnel and

large function keys used for selecting the main menus, it was effortless to use, with self-evident logicthat was

repeated on the MMI display. Audio, TV, information, telephone and navigation – never before had the driver

been able to control all these menus so intuitively.

The MMI set new standards from the outset and became the benchmark for the competition. Its status was

confirmed by many wins in comparative tests. The system was also adopted for the A6 and Q7 model lines,

and for the new A4. In this area of technology, too, the brand with the four-ring emblem has pioneered

progress from the head of the field.

Audi has been intensively developing every aspect of its MMI system. The full version, MMI Navigation plus,

is now a state-of-the-art high-end system. The basic operating principle has been retained, but the innovative

joystick makes it even more convenient. This joystick is located on the central knob and can be moved in eight

directions – with high precision and the high-quality feel that the Audi driver expects.

Apart from the control terminal, the monitor screen is the second important interface between the system

and its users. For the new MMI, Audi has provided a large TFT display measuring seven inches from corner

to corner. It is located in an ergonomically favourable position high up on the centre console. With a very high

resolution of 800 x 480 pixels and LED backlighting, this monitor produces an exceptionally sharp image with

plenty of contrast. Even in poor light conditions, the colours stand out sharply against the black background.

The new central processor, the information electronics control unit -1- J794, integrates all functions,

previously distributed among up to six separate control units. Additional features, such as the SD card reader

and hard drive, which are integrated in the MMI Navigation plus, make the control unit into a truly high-tech

product.

The second new unit is the radio control unit R. It brings together the functions of the tuner and sound

system, previously distributed among up to three control units. This means, therefore, that the total number

control units in the MOST bus system has been reduced. Although the 3rd generation MMI has more

functions and equipment options, it requires less space on the whole and saves more than 4 kg in the full

version.

The new MMI will extend Audi’s lead over its competitors.

Contents

Control unit topology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Feature options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

System versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Information electronics control unit -1- J794 . . . . . . . . 12

Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Sound systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Other components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Glossary* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

*Terms shown in italics and marked by an asterisk are explained in the glossary at the back of this Self Study Programme.

The Self Study Programme provides basic information about the design and functioning of new models,

automotive components or technology.

Reference

Note

The Self Study Programme is not a Repair Manual.

Values specified are for easier understanding only, and refer to the software version valid at the time

of publication of the SSP.

For information about maintenance and repair work, always refer to the current technical literature.

Control unit topology

Control unit topology of the 3rd generation MMI

The MOST bus is used for exchanging data between the control units in the 3rd generation MMI system.

It facilitates a very high data transfer rate, which, for example, is necessary for the transfer of audio data.

Video signals from the TV tuner or rear-view camera are transmitted across an analogue video line to the

information electronics control unit -1- J794 as CVBS* signals (refer to Glossary).

MMI display

J685

Mediaplayer

in position 1

R118

Information electronics

control unit -1-

J794

Data bus

diagnostic interface

J533

TV tuner

R78

Digital sound package

control unit

J525

Radio

435_020

MOST bus

LIN bus

Feature options

System overview for Audi A8 with 3rd generation MMI

(available in Europe only)

MMI Navigation plus

Basic functions

Nav-Info

Destination

Hard drive navigation

Remote control console with joystick

7" display with 800 x 480 pixel resolution

AM */ FM* radio with phase diversity and background tuner

Car menu, climate display, clock, etc.

Single- DVD * drive

Premium speech control

SD* card reader (2 x)

MP3* , WMA* , AAC*

Standard Sound System (6-channel)

Optional features

Premium Sound System (Bose)

Advanced Sound System (Bang&Olufsen)

CD* changer (MP3, WMA)

Audi music interface

Digital radio DAB* (Sirius in North America)

Universal mobile phone preparation ( UHV* )

Audi Bluetooth car phone

TV hybrid, 2 x AV input *

Rear-view camera, Park Assist plus

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