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BMW Left high beam headlight faulty

Left high beam headlight faulty

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an authorized BMW service center and provide the exact Check Control message and any vehicle-test results. Ask the service center to review BMW SIB 63 01 23 for applicability.
Confidence90%

Quick answer

For a 2023 BMW i7 in the US, the “Left high beam headlight faulty” message is covered by BMW Service Information Bulletin (SIB) 63 01 23. BMW states that the lights may operate correctly and no functional defect may be found; the stated cause is a software error in the Front Electronics Module (FLM).

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 Left high beam headlight faulty mean?

For a 2023 BMW i7 in the US, the “Left high beam headlight faulty” message is covered by BMW Service Information Bulletin (SIB) 63 01 23. BMW states that the lights may operate correctly and no functional defect may be found; the stated cause is a software error in the Front Electronics Module (FLM).

2. Technical explanation

BMW SIB 63 01 23 documents Check Control message 128, “Left high beam headlight faulty.” The bulletin also identifies stored fault code 805A22: “MLC: Communication fault timeout FLM-03 left.” BMW’s evidence states that all lights can be observed operating correctly despite the displayed message, and attributes the condition to a software error in the FLM (Front Electronics Module).

3. What system is affected?

Headlight / Front Electronics Module (FLM) communication and control.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • Check Control message 128: “Left high beam headlight faulty.”
  • Fault code 805A22 may be stored: “MLC: Communication fault timeout FLM-03 left.”
  • BMW states that all lights may be observed operating correctly and that no functional defect may be found.

6. Possible causes

  • BMW SIB 63 01 23 identifies a software error in the Front Electronics Module (FLM).

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

  • Verify whether the left high beam and other exterior lights are operating before driving in conditions that require lighting.
  • Arrange BMW service diagnosis if the message is displayed or returns.
  • Do not rely on an apparently operating lamp as proof that the stored communication fault has been resolved.

10. Step-by-step troubleshooting

  1. BMW’s documented vehicle-test fault code for the left-side condition is 805A22: “MLC: Communication fault timeout FLM-03 left.”
  2. BMW states that a functional lighting defect may not be present, so diagnosis should consider the documented FLM software issue.

11. When to contact service

Contact an authorized BMW service center and provide the exact Check Control message and any vehicle-test results. Ask the service center to review BMW SIB 63 01 23 for applicability.

12. What the service center may check

  • Perform a vehicle test and check for fault code 805A22, documented by BMW for the left-side message.
  • Confirm the observed operation of the vehicle lights.
  • Review the FLM software condition described in BMW SIB 63 01 23.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied bulletin evidence identifies an FLM software error but does not include the complete repair procedure or software-programming details.

14. Affected vehicles

15. Related TSBs / service bulletins

  • BMW SIB 63 01 23, “High Beam Headlight CC Message Displayed,” published February 6, 2023. It applies in the supplied evidence to the G70 7 Series, among other BMW models, and documents the left high-beam message, fault code 805A22, and an FLM software error.
  • NHTSA Manufacturer Communication 10233164: B630123.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified source: NHTSA Manufacturer Communication 10233164, BMW SIB 63 01 23, “High Beam Headlight CC Message Displayed,” published February 6, 2023. Supplied applicability data identifies the 2023 BMW i7, US market.

19. Frequently asked questions

What does “Left high beam headlight faulty” mean on a 2023 BMW i7?

BMW documents this as Check Control message 128. In the cited bulletin, it can occur with fault code 805A22 for a left-side FLM-03 communication timeout.

Does this message prove the left high beam has failed?

No. BMW states in SIB 63 01 23 that all lights may be operating correctly and no functional defect may be found.

What cause does BMW identify?

BMW identifies a software error in the Front Electronics Module (FLM).

Is it safe to drive or charge?

Not yet established by verified evidence.

20. Sources & verification

Verified
BMW Left high beam headlight faulty: Left high beam headlight faulty | EV Diagnostics