Overview - Infotainment System

WARNING: This page is about a different car, the 2025 Audi S3, 2025 Audi RS 3, and 2025 Audi A3 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

The Infotainment system contains the following functions / components:

Information Electronics Control Module 1 -J794- behind the glove compartment
Radio function is integrated in the Information Electronics Control Module 1 -J794-
Front Information Display Control Head -J685-, 10.1 inch display in the center of the instrument panel
Instrument Cluster Control Module -J285-, Display in Instrument Cluster
The Control Module for Emergency Call Module and Communication Unit - J949- is located behind the display of the center instrument panel.
USB Distributor -R293- in the front center console storage compartment, two USB ports for data and charging
Sound system: Basic Sound, 8RL
Bluetooth Hands-Free Calling, 9ZX

Optional

The Digital Radio is integrated in the Information Electronics Control Module 1 -J794-, only for Europe/Rest of World and QV3/Q0D
The Satellite Radio System is integrated in the Information Electronics Control Module 1 - J794-, only for North America and QV3
Digital Sound System Control Module -J525- is located on the left rear side of the luggage compartment, 9VS only
Pre-installed navigation with optional function activation, 7UZ
MMI Navigation plus navigation system, 7UG
Sound systems: Audi sound system, 9VD/Premium Sound System, 9VS
TV-Tuner -R78- is located behind the instrument panel to the right, only for Japan and QV1
Audi phone box, 9ZE/Audi phone box light, 9ZV
Multifunction Steering Wheel

Courtesy of AUDI OF AMERICA, LLC

Front Information Display Control Head -J685-, display in center of the instrument panel
The Control Module for Emergency Call Module and Communication Unit - J949- is located behind the display of the center instrument panel.
Right Multifunction Buttons on Steering Wheel -E441- /Left Multifunction Buttons on Steering Wheel -E440-
Information Electronics Control Module 1 -J794- behind the glove compartment
USB Distributor -R293- in the front center console storage compartment
Driver Volume Control -E67- in the Center Console
Mobile Device Charger 1 -J1146- in the front center console storage compartment
Digital Sound System Control Module -J525- in luggage compartment on right rear side
Sound Systems
TV-Tuner -R78- located on the right behind instrument cluster
MOST Bus
Instrument Cluster with Instrument Cluster Control Module -J285-

The data exchange of the systems in the MMI is done via the MOST bus, the CAN bus and the Ethernet.

Fault Finding is performed using the "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. 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 Fiber-Optic Repair Set - Connector Protective Caps :VAS 6223/9 .

Fig 1: Fiber-Optic Conductor Repair Set (VAS 6223A)

Courtesy of AUDI OF AMERICA, LLC

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.

Fiber-optic cable repair. Refer to WIRING HARNESSES AND CONNECTORS, REPAIRING .