HVBATT family
HVBATT_a123_IsolationFailureInDriveWarning
Not Available
What does the HVBATT_a123_IsolationFailureInDriveWarning alert mean?
The BMS has detected isolation failure conditions in several drive sessions
What you'll see in your Tesla
- Not Available
What triggers it
Isolation or isolation degradation alert is set in several drive sessions
When it clears
SW_Repeated_Isolation_Failure_In_Drive is set OR several drive cycles with no isolation or iso degradation alerts
Potential impact
Vehicle may be unable to restart
Affected models
Cybertruck
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.