UMC family
UMC_w024_gndResistanceHigh
Not Available
What does the UMC_w024_gndResistanceHigh alert mean?
The Universal Mobile Connector (UMC) detects a European Smart Adapter is connected, and the UMC also senses a high impedance ground connection.
What you'll see in your Tesla
- Not Available
What triggers it
A European Smart Adapter is connected, and the ground impedance is 1 MOhm or above.
When it clears
The charge handle is disconnected from the vehicle.
Potential impact
No expected impact on vehicle functionality.
Affected models
Model S 2012-2020
Model X 2015-2020
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.