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Audi Lane departure warning fault

Lane departure warning fault

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an Audi service provider for diagnosis, particularly if the “Lane departure warning fault” message appears at start-up.
Confidence90%

Quick answer

For certain 2022–2024 Audi e-tron GT and RS e-tron GT vehicles in the US, “Lane departure warning fault” may appear at vehicle start. Audi’s official service communication associates this condition with diagnostic trouble codes stored in the steering control unit J500.

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 Lane departure warning fault mean?

For certain 2022–2024 Audi e-tron GT and RS e-tron GT vehicles in the US, “Lane departure warning fault” may appear at vehicle start. Audi’s official service communication associates this condition with diagnostic trouble codes stored in the steering control unit J500.

2. Technical explanation

Verified Audi manufacturer communications describe a start-up instrument-cluster message reading “Lane departure warning fault.” The documented workshop finding is the presence of DTC U13D500, “Function restriction, directional stabilization assistance” (symptom code 15872), and DTC C135DF1, “Power steering control module does not implement request” (symptom code 17920), in steering control unit J500 at address 0044. The supplied evidence does not establish a technical root cause or a specific repair procedure.

3. What system is affected?

Lane-departure warning message and steering control unit J500 (address 0044).

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The instrument cluster displays “Lane departure warning fault” when the vehicle is started.
  • DTC U13D500 may be stored in steering control unit J500.
  • DTC C135DF1 may be stored in steering control unit J500.

6. Possible causes

  • 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

  • Arrange diagnosis by an Audi service provider or suitably qualified workshop.
  • Report whether the message appears at every start-up and provide any stored diagnostic results to the service provider.

10. Step-by-step troubleshooting

  1. A service provider can check steering control unit J500, address 0044, for DTC U13D500 and DTC C135DF1.
  2. No owner-performed troubleshooting or repair procedure is established by the supplied verified evidence.

11. When to contact service

Contact an Audi service provider for diagnosis, particularly if the “Lane departure warning fault” message appears at start-up.

12. What the service center may check

  • Check steering control unit J500 (address 0044) for U13D500: Function restriction, directional stabilization assistance; symptom code 15872.
  • Check steering control unit J500 (address 0044) for C135DF1: Power steering control module does not implement request; symptom code 17920.
  • Consult Audi manufacturer communication A4823422069614_3, which applies to listed 2022–2024 vehicles.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Audi manufacturer communication A4823382069614_1, published March 7, 2023; applies to 2022–2023 e-tron GT and RS e-tron GT vehicles.
  • Audi manufacturer communication A4823392069614_2, published March 27, 2023; revision of the prior communication for 2022–2023 e-tron GT and RS e-tron GT vehicles.
  • Audi manufacturer communication A4823422069614_3, published June 29, 2023; revised header to include model year 2024 and applies to 2022–2024 e-tron GT and RS e-tron GT vehicles.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Audi manufacturer communications: 10232754 (A4823382069614_1), 10233536 (A4823392069614_2), and 10238317 (A4823422069614_3). The latest supplied communication is A4823422069614_3, published June 29, 2023.

19. Frequently asked questions

Which vehicles are covered by the verified Audi communication?

The supplied latest communication lists US-market 2022–2024 Audi e-tron GT and RS e-tron GT vehicles. The applicability data also includes overlapping 2022–2023 entries.

What message does this communication address?

It addresses the instrument-cluster message “Lane departure warning fault” appearing when the vehicle is started.

Which diagnostic codes are associated with this message?

Audi documents U13D500 and C135DF1 stored in steering control unit J500, address 0044.

Is it safe to continue driving or charging?

Not yet established by verified evidence.

20. Sources & verification

Verified
Audi Lane departure warning fault: Lane departure warning fault | EV Diagnostics