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Tesla UMC_w010

Mobile Connector to adapter connection hot Let cool - Plug adapter fully into Mobile Connector

Common search variants: UMCw010 · UMC-w010 · UMC w010 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeCharging is interrupted when this alert occurs. After the equipment has cooled and the wall-plug adapter is fully connected to the Mobile Connector, charging status must be checked; whether charging will resume in every case is not yet established by verified evidence.
ServiceWhether Tesla service is required for this alert is not yet established by verified evidence.
Confidence95%

Quick answer

UMC_w010 means charging was interrupted because the Tesla Mobile Connector detected a high temperature at the connection between its wall-plug adapter and control box. Let the equipment cool, then ensure the wall-plug adapter is fully connected to the Mobile Connector.

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_w010 mean?

UMC_w010 means charging was interrupted because the Tesla Mobile Connector detected a high temperature at the connection between its wall-plug adapter and control box. Let the equipment cool, then ensure the wall-plug adapter is fully connected to the Mobile Connector.

2. Technical explanation

Tesla documentation submitted to NHTSA identifies this as a Mobile Connector/adapter connection-temperature alert. The detected hot location is the connection between the wall-plug adapter and the Mobile Connector control box; the alert does not establish a fault in the vehicle’s high-voltage battery or drive system.

3. What system is affected?

Tesla Mobile Connector, specifically the connection between the wall-plug adapter and the Mobile Connector control box.

4. How serious is this code?

The diagnostic severity is not yet established by verified evidence. Verified documentation confirms that charging is interrupted when this alert occurs.

5. Symptoms you may notice

  • The vehicle displays UMC_w010.
  • Charging is interrupted.
  • The Mobile Connector has detected high temperature at the wall-plug-adapter-to-control-box connection.

6. Possible causes

  • The verified evidence establishes that the Mobile Connector detected high temperature at the connection between the wall-plug adapter and the control box.
  • Whether a particular underlying component condition caused the high temperature 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 is interrupted when this alert occurs. After the equipment has cooled and the wall-plug adapter is fully connected to the Mobile Connector, charging status must be checked; whether charging will resume in every case is not yet established by verified evidence.

9. What you can safely do

  • Allow the Mobile Connector and adapter connection to cool.
  • Make sure the wall-plug adapter is fully connected to the Mobile Connector.
  • Refer to the Mobile Connector owner’s manual for troubleshooting of Mobile Connector status lights and charging issues.
  • Tesla documentation also identifies Tesla Supercharger or Destination Charging locations as charging alternatives.

10. Step-by-step troubleshooting

  1. After allowing the equipment to cool, verify that the wall-plug adapter is fully connected to the Mobile Connector.
  2. Consult the product owner’s manual for Mobile Connector status-light and charging-issue troubleshooting.
  3. Further troubleshooting steps are not yet established by verified evidence.

11. When to contact service

Whether Tesla service is required for this alert is 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 10250483, published December 1, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf
  • NHTSA manufacturer communication 10253660, published March 26, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf

16. Recall information

  • No recall information was supplied in the verified evidence.

17. Official manufacturer information

Verified NHTSA-hosted Tesla documentation describes UMC_w010 as: “Mobile Connector to adapter connection hot Let cool - Plug adapter fully into Mobile Connector.” It states that charging was interrupted after a high temperature was detected at the connection between the wall-plug adapter and control box. The supplied evidence applies in the US to Tesla Model 3 (2017–2023), Model S (2012–2023), and Model X (2016–2023).

19. Frequently asked questions

What does Tesla alert UMC_w010 mean?

It means the Mobile Connector detected a high temperature at the connection between the wall-plug adapter and its control box, and charging was interrupted.

What should I do when UMC_w010 appears?

Let the equipment cool and make sure the wall-plug adapter is fully connected to the Mobile Connector. For additional status-light or charging troubleshooting, consult the Mobile Connector owner’s manual.

Does UMC_w010 confirm a vehicle battery fault?

No. The verified documentation identifies the detected hot location as the Mobile Connector wall-plug-adapter-to-control-box connection. It does not establish a vehicle battery fault.

20. Sources & verification

Verified
Show all 24 verified sources
Tesla UMC_w010: Mobile Connector to adapter connection hot Let cool -… | EV Diagnostics