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Porsche Power Button Faulty - Service Required

Power Button Faulty - Service Required

DriveUnknown. The supplied diagnostic record lists safe-to-drive status as unknown.
ChargeUnknown. The supplied diagnostic record lists safe-to-charge status as unknown.
ServicePorsche service assessment is appropriate because an official Porsche technical communication specifically addresses this intermittent warning and associated fault-memory entry.
Confidence90%

Quick answer

For applicable 2020–2025 Porsche Taycan vehicles in the US, Porsche Technical Information No. 65-25 addresses an intermittent instrument-cluster warning: “Power Button Faulty - Service Required.” The communication also identifies fault-memory entry B143C29 in the rear-end electronics control 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 Power Button Faulty - Service Required mean?

For applicable 2020–2025 Porsche Taycan vehicles in the US, Porsche Technical Information No. 65-25 addresses an intermittent instrument-cluster warning: “Power Button Faulty - Service Required.” The communication also identifies fault-memory entry B143C29 in the rear-end electronics control unit.

2. Technical explanation

Verified evidence identifies this as an intermittent warning message in the instrument cluster, associated with fault-memory entry B143C29 in the rear-end electronics control unit. The supplied evidence does not establish the underlying failure mechanism or a specific repair procedure.

3. What system is affected?

Rear-end electronics control unit; the warning is displayed in the instrument cluster.

4. How serious is this code?

Unknown. The diagnostic record lists severity as unknown.

5. Symptoms you may notice

  • Intermittent instrument-cluster warning: “Power Button Faulty - Service Required.”
  • Fault-memory entry B143C29 in the rear-end electronics control unit.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied diagnostic record lists safe-to-drive status as unknown.

8. Can I charge the vehicle?

Unknown. The supplied diagnostic record lists safe-to-charge status as unknown.

9. What you can safely do

  • Arrange assessment by an authorized Porsche service provider, particularly if the warning is present or returns.
  • Record whether the message is intermittent and retain any warning-message details for the service visit.

10. Step-by-step troubleshooting

  1. A service provider can check the rear-end electronics control unit for fault-memory entry B143C29.
  2. Further owner-level troubleshooting is not established by the verified evidence.

11. When to contact service

Porsche service assessment is appropriate because an official Porsche technical communication specifically addresses this intermittent warning and associated fault-memory entry.

12. What the service center may check

  • Check the rear-end electronics control unit for fault-memory entry B143C29.
  • Review Porsche Technical Information No. 65-25 for the applicable vehicle and warning condition.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Porsche Technical Information No. 65-25, reported by NHTSA as Manufacturer Communication 11022916, published August 15, 2025. It concerns the intermittent “Power Button Faulty - Service Required” warning and B143C29 in the rear-end electronics control unit.
  • Porsche Technical Information No. 65-25, reported by NHTSA as Manufacturer Communication 11024068, published September 11, 2025. It concerns the intermittent “Power Button Faulty - Service Required” warning and B143C29 in the rear-end electronics control unit.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

Applicable population in the supplied data: 2020–2025 Porsche Taycan, US. Official NHTSA-hosted manufacturer communications: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11022916 and https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11024068

19. Frequently asked questions

What does “Power Button Faulty - Service Required” mean on a Porsche Taycan?

Verified evidence identifies it as an intermittent instrument-cluster warning addressed by Porsche Technical Information No. 65-25. The related fault-memory entry is B143C29 in the rear-end electronics control unit.

Which vehicles are covered by the supplied applicability evidence?

The supplied applicability data identifies US-market Porsche Taycan vehicles from model years 2020 through 2025.

Is it safe to drive or charge?

Not yet established by verified evidence. The diagnostic record marks both safe-to-drive and safe-to-charge status as unknown.

Is this a recall?

No recall is established by the supplied verified evidence. The listed official documents are manufacturer technical communications.

20. Sources & verification

Accepted ResearchVerified
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