Audi A4: Overview - Telephone

Overview - Telephone, Bluetooth Hands-Free Calling, 9ZX

The Information Electronics Control Module 1 -J794- is installed with the Microphone Unit In Front Roof Module -R164- and is exclusively for hands-free calling. The connection to the Cellular Telephone -R54- takes place via Bluetooth.

The Bluetooth Antenna -R152- is integrated in the Information Electronics Control Module 1 -J794-.

9ZX - Bluetooth hands-free calling in the Information Electronics Control Module 1 -J794-

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 - Information Electronics Control Module 1 -J794- with Bluetooth Antenna -R152- in the Glove Compartment

4 - Sound Systems

5 - Left Front Microphone -R140-, Microphone Unit in Front Roof Module -R164- in the Front Interior Lamp -W1-

Antennas

9ZX/EL0 - Bluetooth hands-free calling without connect:

• No Telephone Antenna -R65- is installed
• No LTE antennas (-R297-/-R306-) are installed

9ZX/EL3 - Bluetooth hands-free calling with connect:

• No Telephone Antenna -R65- is installed
• Europe and Rest of World (ER1/ER2): There are LTE antennas (LTE Antenna 1 -R297-/LTE Antenna 2 -R306-) installed, LTE Antenna 2 -R306- in the Roof Antenna -R216- and LTE Antenna 1 -R297- under the left rear bumper cover.
• USA (ER3): There are LTE antennas (LTE Antenna 1 -R297-/LTE Antenna 2 -R306-) installed, LTE Antenna 1 -R297- is under the left rear bumper cover and LTE Antenna 2 -R306- is under the right rear bumper cover.

Overview on Connect, LTE Antennas

1 - Information Electronics Control Module 1 -J794-

2 - Not Installed

3 - Not Installed

4 - Right Bumper Antenna

• LTE Antenna 2 -R306-, ER3

5 - Left Bumper Antenna

• LTE Antenna 1 -R297-, ER1/ER2/ER3

6 - Roof Antenna -R216-

• LTE Antenna 2 -R306-, ER1/ER2

Antenna, removing and installing. Refer to → Chapter "Component Location Overview - Antenna Systems".

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

Repairing antenna wires. Refer to → Chapter "General Repair Information".

Notes on Bluetooth Technology

A standardized radio connection is used for data transfer between the Information Electronics Control Module 1 -J794- and Cellular Telephone -R54- - Bluetooth technology. The range of the radio connection is approximately 10 m (11 yards).

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 the fiber-optic cables.

Repairing fiber-optic cables. Refer to → Chapter "General Repair Information".

Overview - Telephone, Audi Phone Box, 9ZE

The Telephone Baseplate -R126- (phone box) is installed in the center console. The telephone is operated either by the infotainment system MMI or by the Cellular Telephone -R54-.

The microphones for the Microphone Unit In Front Roof Module -R164- are integrated in the Front Interior Lamp -W1-. One microphone (Left Front Microphone -R140-) is connected directly to the Information Electronics Control Module 1 -J794-. For IW3 with the Data Bus on Board Diagnostic Interface -J533-.

The Telephone Antenna -R65- in the Roof Antenna -R216- connects to the cellular network.

The antenna connection is located on the Cellular Telephone Amplifier -R86-.

9ZE - Audi Phone Box

1 - Telephone Antenna -R65- in the Roof Antenna -R216-

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

3 - CAN Bus, MMI

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

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

6 - Sound Systems

7 - Left Front Microphone -R140-, Microphone Unit in Front Roof Module -R164- in the Front Interior Lamp -W1-

8 - Telephone Baseplate -R126- with Cellular Telephone -R54- in the Center Console Storage Compartment.

9 - Cellular Telephone Amplifier -R86- in Luggage Compartment on Right Rear Side

Antennas

9ZE/EL0 - phone box without connect:

• The Telephone Antenna -R65- is installed in the Roof Antenna -R216-
• No LTE antennas (-R297-/-R306-) are installed

Overview - Telephone Antennas

1 - Information Electronics Control Module 1 -J794-

2 - Telephone Baseplate -R126-

3 - Cellular Telephone Amplifier -R86-

4 - Not Installed

5 - Not Installed

6 - Roof Antenna -R216-

• Telephone Antenna -R65-

Antenna, removing and installing. Refer to → Chapter "Component Location Overview - Antenna Systems".

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

Repairing antenna wires. Refer to → Chapter "General Repair Information".

Notes on Bluetooth technology

A standardized radio connection is used for data transfer between the Information Electronics Control Module 1 -J794- and Cellular Telephone -R54- - Bluetooth Technology.

The Information Electronics Control Module 1 -J794- is located in an additional transmitter/receiver with Bluetooth Antenna -R152-.

The range of the radio connection is approximately 10 m (11 yards).

Overview - Telephone, Audi Phone Box Connect, 9ZE/EL3

The Telephone Baseplate -R126- (phone box) is installed in the center console. The telephone is operated either by the Infotainment system MMI or by the Cellular Telephone -R54-.

The microphones for the Microphone Unit In Front Roof Module -R164- are integrated in the Front Interior Lamp -W1-. One microphone (Left Front Microphone -R140-) is connected directly to the Information Electronics Control Module 1 -J794-. For IW3 with the Data Bus on Board Diagnostic Interface -J533-.

The connection to the cellular network takes place via the Telephone Antenna -R65-.

The antenna connection is located on the Cellular Telephone Amplifier -R86-.

For the data transfer two LTE antennas are installed (LTE Antenna 1 -R297-/LTE Antenna 2 -R306-) and connected with the Information Electronics Control Module 1 -J794-.

9ZE/EL3 - Audi Phone Box Connect

   - Telephone Antenna -R65- in the Roof Antenna -R216-, ER3

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

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

4 - CAN Bus, MMI

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

6 - Telephone Baseplate -R126- with Cellular Telephone -R54-

7 - Cellular Telephone Amplifier -R86- in Luggage Compartment on Right Rear Side

8 - Telephone Antenna -R65- on the Right Bumper, ER1/ER2

   - LTE Antenna 2 -R306- on the Right Bumper, ER3

9 - LTE Antenna 1 -R297- on Left Bumper, ER1/ER2/ER3

10 - MOST Bus

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

12 - Left Front Microphone -R140-, Microphone Unit in Front Roof Module -R164- in the Front Interior Lamp -W1-

Antennas

9ZE/EL3 - phone box connect:

• USA (ER3): the Telephone Antenna -R65- is installed in the Roof Antenna -R216-
• USA (ER3): the LTE Antenna 2 -R306- is installed under the right rear bumper cover
• The LTE Antenna 1 -R297- is installed under the left rear bumper cover.
• Europe and Rest of World (ER1/ER2): the Telephone Antenna -R65- is installed under the right rear bumper cover
• Europe and Rest of World (ER1/ER2): the LTE Antenna 2 -R306- is installed in the Roof Antenna -R216-

Overview on Connect

1 - Information Electronics Control Module 1 -J794-

2 - Telephone Baseplate -R126-

3 - Cellular Telephone Amplifier -R86-

4 - Right Bumper Antenna

• Telephone Antenna -R65-, ER1/ER2
• LTE Antenna 2 -R306-, ER3

5 - Left Bumper Antenna

• LTE Antenna 1 -R297-, ER1/ER2/ER3

6 - Roof Antenna -R216-

• Telephone Antenna -R65-, ER3
• LTE Antenna 2 -R306-, ER1/ER2

Antenna, removing and installing. Refer to → Chapter "Component Location Overview - Antenna Systems".

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

Repairing Antenna Wires. Refer to → Chapter "General Repair Information".

Notes on Bluetooth Technology

A standardized radio connection is used for data transfer between the Information Electronics Control Module 1 -J794- and Cellular Telephone -R54- - Bluetooth Technology.

The Information Electronics Control Module 1 -J794- is located in an additional transmitter/receiver with Bluetooth Antenna -R152-.

The range of the radio connection is approximately 10 m (11 yards).

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