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Tesla UMC_w011

Charging equipment communication error Try again or try different equipment

Common search variants: UMCw011 · UMC-w011 · UMC w011 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeNo with the affected charging attempt: verified evidence states the vehicle is unable to charge. Whether charging will work after retrying or with different equipment is not yet established by verified evidence.
ServiceNot yet established by verified evidence.
Confidence95%

Quick answer

Tesla alert UMC_w011 means the vehicle cannot charge because it cannot communicate effectively with the Mobile Connector. The connector cannot confirm through proximity detection that the charge handle is fully connected to the vehicle.

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 UMC_w011 mean?

Tesla alert UMC_w011 means the vehicle cannot charge because it cannot communicate effectively with the Mobile Connector. The connector cannot confirm through proximity detection that the charge handle is fully connected to the vehicle.

2. Technical explanation

Verified Tesla owner-documentation evidence filed with NHTSA describes UMC_w011 as a charging-equipment communication error. Specifically, the Mobile Connector cannot confirm via proximity detection that its charge handle is fully connected to the vehicle. The supplied evidence does not establish a component failure or a vehicle high-voltage fault.

3. What system is affected?

Mobile Connector and the vehicle-to-charge-handle communication/proximity-detection connection.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The vehicle is unable to charge.
  • The vehicle displays UMC_w011: “Charging equipment communication error Try again or try different equipment.”

6. Possible causes

  • The Mobile Connector cannot communicate effectively with the vehicle.
  • The Mobile Connector cannot confirm through proximity detection that the charge handle is fully connected to the vehicle.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

No with the affected charging attempt: verified evidence states the vehicle is unable to charge. Whether charging will work after retrying or with different equipment is not yet established by verified evidence.

9. What you can safely do

  • Try charging again.
  • Try different charging equipment.
  • For Mobile Connector status-light and charging-issue troubleshooting, refer to the product owner’s manual.
  • Tesla documentation identifies Tesla Supercharger and Destination Charging locations as charging alternatives that can be located using the vehicle touchscreen map.

10. Step-by-step troubleshooting

  1. Confirm that the charge handle is fully connected to the vehicle; this is the connection condition identified in the verified evidence.
  2. Retry the charging attempt.
  3. Try different charging equipment.
  4. Use the Mobile Connector owner’s manual for status-light and charging-issue guidance.

11. When to contact service

Not yet established by verified evidence.

12. What the service center may check

  • Not yet established by verified evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 10253660: Index381 (published 2024-03-26): https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf
  • NHTSA Manufacturer Communication PDF 10250483: ManualC (published 2023-12-01): https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf
  • NHTSA Manufacturer Communication PDF 10250482: ManualB (published 2023-12-01): https://static.nhtsa.gov/odi/tsbs/2023/MC-10250482-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified NHTSA-filed Tesla manufacturer communications describe this alert in owner documentation. Applicability in the supplied database is Tesla US Model 3 (2017–2023), Model S (2012–2023), and Model X (2016–2023). Source example: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf

19. Frequently asked questions

What does Tesla UMC_w011 mean?

It means the vehicle cannot charge because it cannot communicate effectively with the Mobile Connector, which cannot confirm via proximity detection that the charge handle is fully connected.

What should I do when UMC_w011 appears?

Try again or use different charging equipment. Confirm the charge handle is fully connected, and refer to the Mobile Connector owner’s manual for status-light and charging-issue information.

Which vehicles are covered by the supplied evidence?

Tesla US Model 3 model years 2017–2023, Model S model years 2012–2023, and Model X model years 2016–2023.

20. Sources & verification

Verified
Show all 24 verified sources
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