Audi A4 Owners & Service Manuals

Audi A4: Overview - Infotainment System

Overview - Infotainment System, MMI Radio Plus, 18E

  • Information Electronics Control Module 1 -J794- with integrated CD player/SD card reader in the glove compartment
  • Multimedia System Control Head -E380- in the center console, UJ0
  • Front Information Display Control Head -J685-, display in center of the instrument panel
  • External Audio Source Connection -R199- (USB Charging, AUX IN) in the center console storage compartment, UE4
  • Sound systems: basic/standard (8RM/9VD)
  • The Radio -R- is integrated in the Information Electronics Control Module 1 -J794-
  • Bluetooth Hands-Free Calling, 9ZX

Optional

  • Digital Radio -R147- integrated in the Information Electronics Control Module 1 -J794-, only ER1/ER2 and QV3
  • Radio System, Satellite -R146- integrated in the Information Electronics Control Module 1 -J794-, only ER3 and QV3
  • Digital Sound System Control Module -J525- in the left rear of the luggage compartment, only 9VS
  • Instrument Cluster Control Module -J285-, instrument cluster display, 9S7
  • Premium Sound System, Bang & Olufsen, 9VS
  • External Audio Source Connection -R199- (USB quantity 2, Aux IN) in the center console storage compartment, UE7
  • Audi phone box, 9ZE
  • Multifunction Steering Wheel

Fault Finding is performed using the "Guided Fault Finding" on the Vehicle Diagnostic Tester.

Overview - Infotainment System

1 - Front Information Display Control Head -J685-, Display in Center of the Instrument Panel

2 - Multimedia System Control Head -E380- in the Center Console

3 - CAN Bus, MMI

4 - Information Electronics Control Module 1 -J794- in the Glove Compartment

5 - External Audio Source Connection -R199- in the Center Console Storage Compartment

6 - MOST Bus

7 - Digital Sound System Control Module -J525- in Luggage Compartment on Left Rear Side

8 - Antenna Amplifier

9 - Rear Window Antennas

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

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 -VAS6223/9-.

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 → Chapter "General Repair Information".

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Overview - Infotainment System, MMI Navigation, I8S

  • Information Electronics Control Module 1 -J794- with integrated CD player/SD memory card reader/navigation system in the glove compartment, 7UF
  • Multimedia System Control Head -E380- in the center console, UJ0
  • Front Information Display Control Head -J685-, display in center of the instrument panel
  • External Audio Source Connection -R199- in the center console storage compartment, UE4
  • Sound system: Standard/Bang & Olufsen, 9VD/9VS
  • Digital Sound System Control Module -J525- in the left rear of the luggage compartment, only 9VS
  • Radio -R- integrated in the Information Electronics Control Module 1 -J794-, I8S
  • Bluetooth Hands-Free Calling, 9ZX
  • Voice recognition system, QH1

Optional

  • Digital Radio -R147- integrated in the Information Electronics Control Module 1 -J794-, only ER1/ER2 and QV3
  • Radio System, Satellite -R146- integrated in the Information Electronics Control Module 1 -J794-, only ER3 and QV3
  • External Audio Source Connection -R199- (USB quantity 2, Aux IN) in the center console storage compartment, UI2/UE7
  • Instrument Cluster Control Module -J285-, instrument cluster display, 9S7
  • Audi phone box, 9ZE
  • Audi phone box connect, 9ZE/EL3
  • Multifunction Steering Wheel

ASI - Audi Smartphone Integration

ASI - Audi Smartphone Integration

1 - Roof Antenna -R216-

2 - Rear Window Antenna with Antenna Amplifier

3 - Front Information Display Control Head -J685-, Display in Center of the Instrument Panel

4 - Multimedia System Control Head -E380- in the Center Console

5 - CAN Bus, MMI

6 - Information Electronics Control Module 1 -J794- in the Glove Compartment

7 - External Audio Source Connection -R199- in the Center Console Storage Compartment

8 - MOST Bus

9 - Digital Sound System Control Module -J525- in Luggage Compartment on Left rear Side

10 - Bumper Antennas

11 - Microphone Unit in Front Roof Module - R164- in the Front Interior Lamp -W1-

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

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 -VAS6223/9-.

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 → Chapter "General Repair Information".

W00-11495

Overview - Infotainment System, MMI Navigation Plus, I8H

  • Information Electronics Control Module 1 -J794- with integrated DVD player/SD memory card reader/navigation system/HDD in the glove compartment, 7UG
  • Multimedia System Control Head -E380- MMI touch in the center console, UJ1
  • Front Information Display Control Head -J685-, display in center of the instrument panel
  • Instrument Cluster Control Module -J285-, instrument cluster display, 9S7
  • External Audio Source Connection -R199- (USB Charging, AUX IN) in the center console storage compartment, UE4/UE7
  • Sound systems: basic/standard (8RM/9VD)
  • The Radio -R- is integrated in the Information Electronics Control Module 1 -J794-
  • Bluetooth Hands-Free Calling, 9ZX
  • Voice recognition system, QH1

Optional

  • Digital Radio -R147- integrated in the Information Electronics Control Module 1 -J794-, only ER1/ER2 and QV3
  • Radio System, Satellite -R146- integrated in the Information Electronics Control Module 1 -J794-, only ER3 and QV3
  • Digital Sound System Control Module -J525- in the left rear of the luggage compartment, only 9VS
  • Instrument Cluster Control Module -J285-, instrument cluster display, 9S8
  • External Audio Source Connection -R199- (USB quantity 2, Aux IN) in the center console storage compartment, UI2/UE7
  • TV Tuner -R78- in the right rear of the luggage compartment, QU1/QV1
  • Premium Sound System, Bang & Olufsen, 9VS
  • Audi phone box, 9ZE
  • Audi phone box connect, 9ZE/EL3
  • Multifunction Steering Wheel

ASI - Audi Smartphone Integration

ASI - Audi Smartphone Integration

1 - Roof Antenna -R216-

2 - Rear Window Antenna with Antenna Amplifier

3 - Front Information Display Control Head -J685-, Display in Center of the Instrument Panel

4 - Multimedia System Control Head -E380- in the Center Console

5 - CAN Bus, MMI

6 - Information Electronics Control Module 1 -J794- in the Glove Compartment

7 - Telephone Baseplate -R126-/External Audio Source Connection -R199- in the Center Console Storage Compartment

8 - MOST Bus

9 - Bumper Antennas

10 - Digital Sound System Control Module -J525- in Luggage Compartment on Left Rear Side

11 - TV Tuner -R78- in Luggage Compartment on Rear Right Side

12 - Microphone Unit in Front Roof Module -R164- in the Front Interior Lamp -W1-

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

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 -VAS6223/9-.

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 → Chapter "General Repair Information".

W00-11495

    READ NEXT:

     Component Location Overview - Infotainment System

    1 - Bracket 2 - Information Electronics Control Module 1 -J794- Connector assignment. Refer to → Wiring diagrams, Troubleshooting & Component locations. Removing an

     Multimedia System Control Head -E380-, Removing and Installing

    Multimedia System Control Head -E380-, Removing and Installing, Manual Transmission The Multimedia System Control Head -E380- is located in the center console. Removing - Turn off the ignition

     Sound System

    SEE MORE:

     Noise Insulation

    Overview - Noise Insulation 1 -  Quick Release Without fastener 2 -  Plug/Rubber Grommet Plug for vehicles without parking heater Rubber grommet for parking heater exhaust pipe 3 -  Bolt 12 Nm Quantity: 2 4 -  Rear Noise Insulation Removing and install

     Subframe with Steering Gear, Removing and Installing

    Special tools and workshop equipment required Torque Wrench 1331 5-50Nm -VAG1331- Torque Wrench 1332 40-200Nm -VAG1332- Engine and Gearbox Jack -VAS6931- Ball Joint Splitter -VAS251805-, not illustrated Tensioning Strap -T10038- Puller - Ball Joint -T40043- Locating Pins -T40327-   C

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