Infotainment System Overview (Japan)

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The MMI Infotainment system is available in the following equipment levels:

MMI maximum equipment

The Information Electronics Control Module 1 -J794- inside the instrument panel at the top contains the CD player/DVD player/navigation system/voice recognition system/SD memory card reader
Internal hard drive disc storage (HDD) for storing navigation data and MP3 files
Multimedia System Control Head -E380- in the center console
Front Information Display Control Head -J685- in center of the instrument panel
The CD Changer -R41- /optional External Audio Source Connection -R199- (interface) in the glove compartment
External Audio Source Connection -R199- (AUX IN jack) in the center console storage compartment
Digital Sound System Control Module -J525- in the luggage compartment on the left rear side
Sound system: Standard/Bang & Olufsen (9VD/9VK)
Radio -R- in the luggage compartment on the left rear side
TV Tuner -R78- on the left side of the luggage compartment in the rear
Optional multifunction steering wheel
Optional Bluetooth hands-free equipment

Fig 1: Identifying MMI, From 1 June 2009

Courtesy of AUDI OF AMERICA, LLC

Multimedia System Control Head -E380- in the center console
Roof Antenna -R216- (GPS Antenna -R50-)
Front Information Display Control Head -J685- in center of the instrument panel
not installed
Microphone Unit in Front Roof Module -R164- (Left Front Microphone -R140-) in the Front Interior Lamp -W1-
not installed
Information Electronics Control Module 1 -J794- inside the instrument panel
MOST Bus
CVBS cable
CD Changer -R41- in glove compartment
TV Tuner -R78- behind the left luggage compartment trim panel
External Audio Source Connection -R199- (AUX IN jack) in the center console storage compartment
Radio -R- behind the left luggage compartment trim panel
Digital Sound System Control Module -J525- behind the left luggage compartment trim panel
Data Bus On Board Diagnostic Interface -J533- Behind the Glove Compartment On the Left Side
Microphone Unit in Front Roof Module -R164- (Right Front Microphone -R141-) in the Front Interior Lamp -W1-

The MOST Bus performs the system data exchange in the MMI.

The connection to the other Data Bus systems in the vehicle are provided by the Data Bus On Board Diagnostic Interface -J533-.

Perform the Fault Finding with the Vehicle Diagnostic Tester.

Information Electronics Control Module 1 -J794- (MMI) Overview

Information Electronics Control Module 1 -J794- is a 3rd generation MMI. Depending on the equipment level, the Information Electronics Control Module 1 -J794- contains the following known control modules from the 2nd generation:

Fig 2: Identifying Information Electronics Control Module 1 -J794- MMI Overview

Courtesy of AUDI OF AMERICA, LLC

Front Information Display Control Head Control Module -J523-
CD Player -R89-
Navigation System with CD Drive Control Module -J401-
SD Memory Card Reader
Speech Input Control Module -J507-
Bluetooth hands-free calling
not installed
internal hard drive disc storage (HDD)
Information Electronics Control Module 1 -J794-

Radio -R- Overview, MMI

Depending on the equipment level, the Radio -R- contains the following known 2nd generation control modules:

Fig 3: Identifying Radio -R- MMI Overview

Courtesy of AUDI OF AMERICA, LLC

Digital Sound System Control Module -J525-
Radio -R-
Radio -R- (AM/FM-Tuner)
not installed
not installed

MOST Bus overview

Fig 4: Identifying MOST Bus MMI

Courtesy of AUDI OF AMERICA, LLC

Front Information Display Control Head -J685-
Information Electronics Control Module 1 -J794-
MOST Bus
CD Changer -R41-
TV Tuner -R78-
Radio -R-
Digital Sound System Control Module -J525-
Data Bus On Board Diagnostic Interface -J533-
Multimedia System Control Head -E380-

Notes on MOST Bus

The optical Data bus "MOST Bus" is used in addition to the CAN Bus.

A fiber-optic cable is used as a "connecting cable". Fiber optic cables are routed inside corrugated tubes for protection.

Replace complete fiber optic cable if possible.

Make sure that the face surfaces of the connectors do not become soiled.

If disconnecting the connectors: Attach Fiber-Optic Repair Set - Connector Protective CapsVAS6223/9.

When installing fiber optic cables, make sure not to go below the minimum bending radius of 25 mm. Do not crush or kink fiber optic cables.

Repairing fiber optic cables, refer to FIBER-OPTIC CABLES, REPAIRING .