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Infotainment Assembly, From 11/03/2008

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The MMI from 11/03/2008 an advancement of the MMI currently in use. The telephone, cell phone preparation, external audio source connection, CD and DVD drives, navigation (with hard disc drive) and voice recognition system are integrated all together in one unit Information Electronics Control Module 1 -J794-.

The Radio - R- /CD Changer -R41- /TV Tuner -R78- and the Digital Sound System Control Module -J525- are connected via the MOST Bus. The basis sound systems are controlled directly by the Radio -R-. Digital Radio -R147- (DAB) is an optional integration in the Radio -R-

MMI Infotainment is available in the following equipment levels:

MMI Minimum Equipment

Fig 1: MMI Minimum Equipment Overview
GWWA91-11189Courtesy of AUDI OF AMERICA, LLC
  1. Front Information Display Control Head -J685- in Center of the Instrument Panel
  2. Information Electronics Control Module 1 -J794- inside the Instrument Panel
  3. Multimedia System Control Head -E380- in the front of the Center Console
  4. MOST Bus
  5. Data Bus On Board Diagnostic Interface -J533- Behind the Glove Compartment On the Left Side
  6. Radio -R- Behind the Left Luggage Compartment Side Trim Panel
  7. Digital Sound System Control Module -J525- behind the Luggage Compartment Left Side Trim
  8. CD Changer -R41- in Glove Compartment
  9. External Audio Source Connection -R199- in the Center Counsel Storage Compartment, AUX IN Socket

MMI Maximum Equipment

Fig 2: Identifying MMI (From 1 June 2009)
GWWA91-10018Courtesy of AUDI OF AMERICA, LLC
  1. Multimedia System Control Head -E380- in the Front of the Center Console
  2. Radio/Telephone/Navigation System Antenna -R52-
  3. Front Information Display Control Head -J685- in Center of the Instrument Panel
  4. Radio/Telephone/Navigation System Antenna -R52-
  5. Microphone Unit in Front Roof Module -R164- (Left Front Microphone -R140-) in the Front Interior Lamp -W1-
  6. Telephone Baseplate -R126- Inside the Center Console Storage Compartment
  7. Information Electronics Control Module 1 -J794- Inside the Instrument Panel
  8. MOST Bus
  9. CVBS Cable
  10. CD Changer -R41- in Glove Compartment
  11. TV Tuner -R78- Behind the Left Luggage Compartment Side Trim Panel
  12. External Audio Source Connection -R199- in the Center Counsel Storage Compartment, AUX IN Socket
  13. Radio -R- Behind the Left Luggage Compartment Side Trim Panel
  14. Digital Sound System Control Module -J525- Behind the Luggage Compartment Left Side Trim
  15. Data Bus On Board Diagnostic Interface -J533- Behind the Glove Compartment On the Left Side
  16. 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-.

Fault finding is performed via "Guided Fault Finding  " see Vehicle Diagnostic Tester.

Information Electronics Control Module 1 -J794- 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 3: Identifying Information Electronics Control Module 1 -J794- MMI Overview
GWWA91-11271Courtesy of AUDI OF AMERICA, LLC
  1. Front Information Display Control Head Control Module -J523-
  2. CD Player -R89-
  3. Navigation System with CD Drive Control Module -J401-
  4. Telephone Card Reader -R115- /SD Card Reader
  5. Speech Input Control Module -J507-
  6. Telephone Transceiver -R36-, Bluetooth Car Phone
  7. Telephone Transceiver -R36-, Cell Phone Preparation
  8. Internal Hard Drive Disc Storage (HDD)
  9. Information Electronics Control Module 1 -J794-

Radio -R- Components, MMI

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

Fig 4: Identifying Radio -R- MMI Overview
GWWA91-11299Courtesy of AUDI OF AMERICA, LLC
  1. Digital Sound System Control Module -J525-
  2. Radio -R-
  3. Radio -R-, AM/FM-Tuner
  4. Satellite Radio -R146-, USA only
  5. Digital Radio -R147-, Europe only

MOST Bus Overview

Fig 5: Identifying MOST Bus MMI
GWWA91-11300Courtesy of AUDI OF AMERICA, LLC
  1. Front Information Display Control Head -J685-
  2. Information Electronics Control Module 1 -J794-
  3. MOST Bus
  4. CD Changer -R41-
  5. TV Tuner -R78-
  6. Radio -R-
  7. Digital Sound System Control Module -J525-
  8. Data Bus On Board Diagnostic Interface -J533-
  9. 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 Caps VAS6223/9.

Fig 6: Fiber Optic Plier Repair Set VAS 6223
GWWW00-10202Courtesy of AUDI OF AMERICA, LLC

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 .

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