Is UMC_W024 the same as UMC-W024?

Yes. UMC_W024, UMC W024, and UMC-W024 are alternate spellings of the same Tesla alert code. Also written as: UMC-W024, UMC_W024, UMC W024, UMC_w024_gndResistanceHigh, umc_w024_gndresistancehigh.

What symptoms can UMC-W024 cause?

Universal Mobile Connector alert: The Gen 2 Universal Mobile Connector (UMC) detects high ground resistance on the line side. Related vehicle feature may be reduced or unavailable Alert visible in the Tesla app: The Gen 2 Universal Mobile Connector (UMC) detects high ground resistance on the

What should I check for UMC-W024?

1. Reboot the vehicle by holding both scroll wheels for 10 seconds 2. Check for pending OTA software updates in Controls > Software 3. If the alert persists, schedule a Tesla Service appointment 4. Describe the alert code and any symptoms when booking service

Is it safe to drive with UMC-W024?

🟡 Check the vehicle display for drive or charge restrictions and schedule service promptly.

TESLA Warning

UMC-W024

UMC_w024_gndResistanceHigh

Also written as UMC_W024 / UMC W024 / UMC_w024_gndResistanceHigh / umc_w024_gndresistancehigh

System

UMC

Universal Mobile Connector

Type

Warning

Why does the exact Tesla alert ID matter?

Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.

What does UMC-W024 mean?

Tesla warning code in the Universal Mobile Connector (UMC) module. The Gen 2 Universal Mobile Connector (UMC) detects high ground resistance on the line side.

Original Description

The Gen 2 Universal Mobile Connector (UMC) detects high ground resistance on the line side.

Affected Tesla Models

Model SModel XModel 3Model Y

What You May Notice

Universal Mobile Connector alert: The Gen 2 Universal Mobile Connector (UMC) detects high ground resistance on the line side.
Related vehicle feature may be reduced or unavailable
Alert visible in the Tesla app: The Gen 2 Universal Mobile Connector (UMC) detects high ground resistance on the

How to Diagnose and Resolve

1 Reboot the vehicle by holding both scroll wheels for 10 seconds
2 Check for pending OTA software updates in Controls > Software
3 If the alert persists, schedule a Tesla Service appointment
4 Describe the alert code and any symptoms when booking service

Severity Notes

UMC-W024 is a Warning in the Universal Mobile Connector system. Schedule service soon. Monitor your vehicle for additional warnings.

Other UMC Codes

UMC_a001 UMC_a002 UMC_a003 Tesla alert code in the Universal Mobile Connector (UMC) mod... UMC_a004 UMC_a005 UMC_a006 UMC_a007 UMC_a008

View all UMC codes →