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Audi Antenna Malfunction

Antenna Malfunction

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceService need is not established by the diagnostic record. However, Audi service diagnosis is appropriate if the message is present, because official manufacturer communications associate it with possible stored communication DTCs.
Confidence90%

Quick answer

For certain 2023 Audi US models, an “Antenna Malfunction” message can be displayed on the MMI screen. Audi manufacturer communications link this message to a possible communication issue involving the emergency call module and communication unit.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

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1. What does Antenna Malfunction mean?

For certain 2023 Audi US models, an “Antenna Malfunction” message can be displayed on the MMI screen. Audi manufacturer communications link this message to a possible communication issue involving the emergency call module and communication unit.

2. Technical explanation

Verified Audi/NHTSA manufacturer-communication evidence states that the MMI may display “Antenna Malfunction,” potentially together with a “No data connection” message. The communications identify that DTC U142100 and/or U164200 may be stored in the Data Bus On Board Diagnostic Interface (Gateway), J533. The provided evidence does not establish the complete root cause or repair procedure.

3. What system is affected?

MMI display, Data Bus On Board Diagnostic Interface (Gateway) J533, and the emergency call module/communication unit are referenced by the verified manufacturer communications.

4. How serious is this code?

Unknown. Severity is not established by the supplied verified evidence.

5. Symptoms you may notice

  • “Antenna Malfunction” message displayed on the MMI screen.
  • “No data connection” message may be displayed on the MMI screen.

6. Possible causes

  • A communication issue involving the emergency call module and communication unit is indicated by the stored DTC descriptions.
  • The complete underlying cause is not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Record the exact MMI message and any accompanying “No data connection” message.
  • Arrange diagnosis by an Audi service provider or qualified repair facility.
  • Do not attempt high-voltage or emergency-call/communication-module repairs yourself.

10. Step-by-step troubleshooting

  1. A repair facility can check the Gateway J533 for the DTCs identified in the Audi manufacturer communications.
  2. No owner-performed diagnostic or repair procedure is established by the supplied verified evidence.

11. When to contact service

Service need is not established by the diagnostic record. However, Audi service diagnosis is appropriate if the message is present, because official manufacturer communications associate it with possible stored communication DTCs.

12. What the service center may check

  • Check Data Bus On Board Diagnostic Interface (Gateway), J533, for DTC U142100: “Control module for emergency call module and communication unit no communication.”
  • Check Gateway J533 for DTC U164200: “Ethernet Emergency Call Module no communication.”
  • Confirm whether the MMI displays “Antenna Malfunction” and/or “No data connection.”

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication 10249224, A9124592071693_2, published January 22, 2024.
  • NHTSA Manufacturer Communication 10243972, A9123322071693_1, published October 9, 2023.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official sources: NHTSA Manufacturer Communications 10249224 and 10243972, both describing an MMI “Antenna Malfunction” message and possible Gateway J533 DTCs. Applicability supplied: 2023 US Audi Q5, RS e-tron GT, e-tron, and e-tron GT.

19. Frequently asked questions

What does the Audi “Antenna Malfunction” message mean?

The verified evidence associates the message with a possible communication issue involving the emergency call module and communication unit. A complete root cause is not established by the supplied evidence.

Which fault codes may be present?

Audi manufacturer communications state that Gateway J533 may store U142100 and/or U164200.

Can I continue driving or charging?

Not yet established by verified evidence.

Does this apply to all Audi vehicles?

The supplied applicability evidence is limited to US-market 2023 Audi Q5, RS e-tron GT, e-tron, and e-tron GT vehicles.

20. Sources & verification

Verified
Audi Antenna Malfunction: Antenna Malfunction | EV Diagnostics