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Tesla UMC_w017

Charge rate reduced - Wall plug temperature high Wall outlet and wiring inspection recommended

Common search variants: UMCw017 · UMC-w017 · UMC w017 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence. Verified evidence establishes that charging is slowed when this alert occurs.
ServiceContact a qualified electrical professional for the recommended wall-outlet and wiring inspection. Whether Tesla service is required is not yet established by verified evidence.
Confidence95%

Quick answer

Tesla alert UMC_w017 means the Mobile Connector detected that the wall outlet/plug area is becoming too warm and reduced charging rate to protect the outlet. Tesla recommends wall-outlet and wiring inspection.

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1. What does UMC_w017 mean?

Tesla alert UMC_w017 means the Mobile Connector detected that the wall outlet/plug area is becoming too warm and reduced charging rate to protect the outlet. Tesla recommends wall-outlet and wiring inspection.

2. Technical explanation

Verified Tesla owner-manual material filed with NHTSA states that high-temperature alerts from the Mobile Connector indicate the outlet used for charging is becoming too warm. Charging is slowed to protect the outlet. The material states this is not typically an issue with the vehicle or Mobile Connector.

3. What system is affected?

AC charging supply equipment: the wall outlet, wall plug connection, and associated wiring used with the Tesla Mobile Connector.

4. How serious is this code?

Severity is not assigned in the verified diagnostic record. The alert indicates protective charge-rate reduction due to high temperature at the outlet/plug area.

5. Symptoms you may notice

  • The vehicle displays UMC_w017.
  • Charging rate is reduced.
  • A high-temperature condition is detected by the Mobile Connector at the outlet/plug area.

6. Possible causes

  • The outlet used to charge is becoming too warm.
  • The alert title recommends inspection of the wall outlet and wiring. Further specific causes are 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?

Not yet established by verified evidence. Verified evidence establishes that charging is slowed when this alert occurs.

9. What you can safely do

  • Have the wall outlet and associated wiring inspected as recommended by the alert.
  • Refer to the Tesla product owner's manual for Mobile Connector status-light and charging-issue troubleshooting.
  • Use a Tesla Supercharger or Destination Charging location if appropriate; Tesla owner-manual material identifies these as charging alternatives available through the vehicle touchscreen map.

10. Step-by-step troubleshooting

  1. Consult the applicable Tesla product owner's manual for Mobile Connector status lights and charging issues.
  2. Arrange inspection of the wall outlet and wiring. Detailed inspection or electrical repair procedures are not established by the supplied verified evidence.

11. When to contact service

Contact a qualified electrical professional for the recommended wall-outlet and wiring inspection. Whether Tesla service is required is not yet established by verified evidence.

12. What the service center may check

  • Inspect the wall outlet and associated wiring, as recommended in the alert. Specific diagnostic checks are not yet established by verified evidence.

13. Possible repair or resolution

  • Repair resolution is not yet established by verified evidence. The verified alert recommends wall outlet and wiring inspection.

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 10238120: Manual-2, published 2023-05-22: https://static.nhtsa.gov/odi/tsbs/2023/MC-10238120-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Tesla manufacturer communications describe UMC_w017 as: “Charge rate reduced - Wall plug temperature high Wall outlet and wiring inspection recommended.” They state that a Mobile Connector high-temperature alert means the outlet is becoming too warm and charging has been slowed to protect it. Source: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf

19. Frequently asked questions

What does Tesla UMC_w017 mean?

It means the Mobile Connector detected high temperature at the wall plug/outlet area and reduced the charge rate. The alert recommends wall outlet and wiring inspection.

Is this usually a vehicle or Mobile Connector fault?

Tesla owner-manual material states that this is not typically an issue with the vehicle or Mobile Connector.

Why did charging slow down?

Tesla states charging is slowed to protect an outlet that is becoming too warm.

Which vehicles are covered by the verified applicability data?

United States Tesla Model 3 model years 2017–2023; Model S model years 2012–2023; and Model X model years 2016–2023. Applicability is based on the supplied verified records.

20. Sources & verification

Verified
Show all 24 verified sources
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