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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Communication (1 Of 2) >> 91 Communication >> Telephone System >> Overview - Telephone >> Overview - Telephone, AUDI Phone Box And AUDI Connect, 9ZE/El3

Overview - Telephone, AUDI Phone Box And AUDI Connect, 9ZE/El3

The Telephone Baseplate -R126- (Audi phone box) is installed in the center console. It can be operated using the MMI Infotainment system 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-. Connected to the Data Bus on Board Diagnostic Interface -J533- on the IW3.

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

9ZE/EL3 - Audi Phone Box and Audi Connect

GWWA91-12557Courtesy of AUDI OF AMERICA, LLC
  1. Roof Antenna -R216-
  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
  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 the Luggage Compartment on the Right Rear Side
  8. Right Bumper Antenna
  9. Left Bumper Antenna
  10. MOST Bus
  11. Digital Sound System Control Module -J525- in Luggage Compartment on Left Rear Side
  12. Microphone Unit in Front Roof Module -R164- in the Front Interior Lamp -W1-

Antennas

9ZE - Audi phone box and Audi connect without emergency call function EL3/IW0:

Overview Antennas

GWWA91-12747Courtesy of AUDI OF AMERICA, LLC
  1. Information Electronics Control Module 1 -J794-
  2. Telephone Baseplate -R126-
  3. Cellular Telephone Amplifier -R86-
  4. Right Bumper Antenna
    • Telephone Antenna -R65-
  5. Left Bumper Antenna
    • LTE Antenna 2 -R306-, IV0/IW0
  6. not installed
  7. Roof Antenna -R216-
    • LTE Antenna 1 -R297-, IV0/IW0

Antenna, removing and installing. Refer to COMPONENT LOCATION OVERVIEW - ANTENNA SYSTEMS .

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

Antenna wires, repairing. Refer to ANTENNA WIRES, REPAIRING .

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.

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

The range of the radio connection is approximately 10 m.