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Tesla THC_w0100

Battery heating unavailable - Charge rate reduced Charging may be unavailable in cold temperatures

Common search variants: THCw0100 · THC-w0100 · THC w0100 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeCharging speed may be reduced. Charging may be unavailable in cold temperatures. Whether the vehicle can charge in a specific instance is not yet established by verified evidence.
ServiceTesla’s published guidance is to contact Tesla Service at your convenience to schedule an A/C-system inspection if the alert persists over multiple drives and is accompanied by other alerts indicating potential A/C-system issues.
Confidence95%

Quick answer

THC_w0100 means the vehicle detected a condition affecting high-voltage battery-heater performance. Charging speed may be reduced, and charging may be unavailable in cold temperatures.

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

Video guides

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#Tesla #THC_w0100 #THC_d0013 Battery heating unavailable Battery Coolant Heater alert fixDigital EV Doctor (Tesla alert clear)
Tesla "Battery heating unavailable Charge rate reduced" THC_w0100 How to fix (diagnosis, #THC_w0100)Digital EV Doctor (Tesla alert clear)

Videos are supporting material and never override OEM or regulator evidence.

1. What does THC_w0100 mean?

THC_w0100 means the vehicle detected a condition affecting high-voltage battery-heater performance. Charging speed may be reduced, and charging may be unavailable in cold temperatures.

2. Technical explanation

Tesla’s published alert description states that a condition affecting performance of the high-voltage battery heater has been detected. Without adequate battery heating, charge rate may be reduced and the vehicle may be unable to charge in cold conditions.

3. What system is affected?

High-voltage battery heating system; the published material also directs attention to the A/C system if the alert persists with other A/C-related alerts.

4. How serious is this code?

Severity is not established by the supplied verified evidence.

5. Symptoms you may notice

  • The THC_w0100 alert is displayed.
  • Charging speed (charge rate) may be reduced.
  • Charging may be unavailable in cold temperatures.

6. Possible causes

  • A condition affecting high-voltage battery-heater performance has been detected.
  • A specific underlying component-level 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?

Charging speed may be reduced. Charging may be unavailable in cold temperatures. Whether the vehicle can charge in a specific instance is not yet established by verified evidence.

9. What you can safely do

  • Monitor charging performance, particularly in cold temperatures.
  • If the alert persists over multiple drives and is accompanied by other alerts indicating potential A/C-system issues, contact Tesla Service at your convenience to schedule an A/C-system inspection.
  • Do not attempt high-voltage battery-heater diagnosis or repair yourself.

10. Step-by-step troubleshooting

  1. Check whether the alert persists over multiple drives.
  2. Note whether other alerts indicate potential A/C-system issues.
  3. Observe whether charging speed is reduced or charging becomes unavailable in cold temperatures.
  4. If the stated persistence and accompanying A/C alerts occur, arrange Tesla Service inspection.

11. When to contact service

Tesla’s published guidance is to contact Tesla Service at your convenience to schedule an A/C-system inspection if the alert persists over multiple drives and is accompanied by other alerts indicating potential A/C-system issues.

12. What the service center may check

  • Inspect the A/C system when the alert persists over multiple drives and is accompanied by other A/C-system alerts, as directed by Tesla’s published material.
  • Specific diagnostic tests and component checks are not yet established by verified evidence.

13. Possible repair or resolution

  • A verified repair procedure or resolution is not yet established by the supplied evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 10253660: Index381, published March 26, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf
  • NHTSA Manufacturer Communication PDF 10252957: developG, published February 13, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10252957-9999.pdf
  • NHTSA Manufacturer Communication PDF 10250483: ManualC, published December 1, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf

16. Recall information

  • No recall information is established by the supplied verified evidence.

17. Official manufacturer information

This Tesla alert is documented in NHTSA-hosted Tesla manufacturer communications. Verified applicability in the supplied data is US-market Tesla Model 3 (2017–2023), Model S (2012–2023), and Model X (2016–2023). Source: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf

19. Frequently asked questions

What does Tesla alert THC_w0100 mean?

It means a condition affecting high-voltage battery-heater performance has been detected.

Can THC_w0100 reduce charging speed?

Yes. Tesla states that without adequate high-voltage battery heating, charging speed may be reduced.

Can THC_w0100 prevent charging?

Tesla states that charging may be unavailable in cold temperatures.

When should I contact Tesla Service?

Tesla advises contacting Tesla Service at your convenience for an A/C-system inspection if the alert persists over multiple drives and is accompanied by other alerts indicating potential A/C-system issues.

Is it safe to drive with THC_w0100?

Not yet established by verified evidence.

20. Sources & verification

Verified
Show all 24 verified sources
Tesla THC_w0100: Battery heating unavailable - Charge rate reduced… | EV Diagnostics