Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Overview - Infotainment System
7UG - MMI Navigation Plus
- Information Electronics Control Module 1 -J794- with integrated DVD player/SD memory card reader/navigation system in the glove compartment
- Internal hard drive memory (HDD) for storing navigation data and MP3 files
- Radio -R- integrated in the Information Electronics Control Module 1 -J794-, I8G/I8L
- Multimedia System Control Head -E380- in the center console
- Front Information Display Control Head -J685- (display) in center of the instrument panel
- External multimedia device connection in the center console storage compartment, UE3/UE4
- Sound System Basic Plus, 8RM
- Bluetooth interface, 9ZX (standard equipment from MY 2017)
Optional
- Digital Radio -R147- integrated in the Information Electronics Control Module 1 -J794-, QV3
- Radio System, Satellite - R146- integrated in the Information Electronics Control Module 1 - J794-, only North America and QV3
- TV Tuner -R78- behind the right luggage compartment trim panel (3-door and 5-door vehicles, Sedan)/behind the right rear side trim panel (Cabriolet), QV1
- Digital Sound System Control Module -J525- under the left front seat, 9VS
- Audi Sound System 9VD
- Bang & Olufsen Sound System, 9VS
- External multimedia device connection in center console storage compartment, UE7/UI2
- Bluetooth interface, 9ZX (optional only through MY 2016)
- Online Bluetooth car phone, 9ZK (only through MY 2016)
- Audi phone box, 9ZE
- Audi connect and Audi phone box, 9ZC (from MY 2017)
- integrated Wi-Fi with Bluetooth car phone, 9ZC, 9ZK
- Multifunction Steering Wheel
- Roof Antenna -R216-
- Not for the convertible
- Front Information Display Control Head -J685- in Center of the Instrument Panel
- Rear Window Antennas (3- and 5-Door, Sedan)/Front and Rear Window Antennas plus Antennas in the Side Trim Panels (Convertible)
- Information Electronics Control Module 1 -J794- in the Glove Compartment
- Multimedia System Control Head -E380- in the Center Console
- Sound Systems
- MOST Bus
- Digital Sound System Control Module -J525- under the Left Front Seat
- Microphone Unit in Front Roof Module -R164- (Telephone Microphone -R38-) in the Front Interior Lamp -W1-
- External Multimedia Device Connection in Center Console Storage Compartment
The data exchange for the Bang & Olufsen sound system (9VS) and the TV Tuner -R78- (QV1) occurs through the MOST bus.
The connection to other vehicle systems is established through the CAN bus (Infotainment) and the Data Bus on Board Diagnostic Interface -J533-.
Fault Finding is performed using the "Guided Fault Finding"Β 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 the complete fiber-optic cable if possible.
The front surface of the connectors must not be contaminated.
If disconnecting the connectors: Attach the : VAS6223/9Β .
When routing 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 .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.