BMS family
BMS_f073_SW_Unexpctd_HV_Sys_Bhvr
Unable to start vehicle
What does the BMS_f073_SW_Unexpctd_HV_Sys_Bhvr alert mean?
The battery management system (BMS) detected abnormal HV bus behavior during precharge.
What you'll see in your Tesla
- Unable to start vehicle
- Service is required
What triggers it
The BMS detects abnormal HV bus behavior during precharge.
When it clears
The BMS has detected that the condition clears.
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
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.