Overview - Radio System, MMI Navigation Plus, I8H, From My 2015

I8H - MMI Radio high, MMI Navigation plus 

Information Electronics Control Module 1 -J794- with CD player/DVD Player/SD card reader/navigation system integrated in the instrument panel

• Internal hard drive disc storage (HDD) for storing navigation data and MP3 files
• Front Information Display Control Head -J685- (display) in center of the instrument panel
• Multimedia System Control Head -E380- in the center console, QW1
• DVD Changer -R161- in the glove compartment, 6G2
• External Audio Source Connection -R199- in the center console storage compartment
• Digital Sound System Control Module -J525- in the luggage compartment on the left rear side
• Sound systems: Standard/BOSE/Bang & Olufsen, 9VD/8RY/8RF
• Radio -R- integrated in the Information Electronics Control Module 1 -J794-

Optional 

• TV Tuner -R78- in the luggage compartment on the left rear side, QU1/QV1
• Bluetooth interface, 9ZX
• Bluetooth car phone, 9ZK
• Audi connect and Audi phone box, 9ZC
• Audi phone box, 9ZE
• Digital Radio -R147- integrated in the Radio -R- (Information Electronics Control Module 1 -J794-), QV3
• Satellite Radio -R146- integrated in the Radio -R- (Information Electronics Control Module 1 -J794-), only USA and QV8
• Voice recognition system, QH1

Fig 1: Identifying MMI Navigation Plus, I8H, From My 2015

Courtesy of AUDI OF AMERICA, LLC

1. Roof Antenna -R216-
2. Front Information Display Control Head -J685- in center of the instrument panel
3. Multimedia System Control Head -E380- in the center console
4. Telephone Baseplate -R126- /External Audio Source Connection -R199- in the center console storage compartment
5. Information Electronics Control Module 1 -J794- inside the instrument panel
6. MOST bus
7. Data Bus On Board Diagnostic Interface -J533- under the rear bench seat
8. Digital Sound System Control Module -J525- behind the left luggage compartment trim panel
9. TV Tuner -R78- behind the left luggage compartment trim panel
10. DVD Changer -R161- in the glove compartment
11. Microphone Unit in Front Roof Module -R164- (Left Front Microphone -R140-) 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" on the Vehicle Diagnostic Tester.

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.

The front surface of the connectors must not be dirty.

If disconnecting the connectors: Attach Fiber-Optic Repair Set - Connector Protective Caps VAS 6223/9.

Fig 2: Fiber Optic Plier Repair Set VAS 6223

Courtesy 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 CABLE .