BMS family
BMS_a022_SW_Over_Current
Unable to drive
What does the BMS_a022_SW_Over_Current alert mean?
The battery management system (BMS) has detected a software overcurrent event.
What you'll see in your Tesla
- Unable to drive
- PULL OVER SAFELY
What triggers it
The high voltage (HV) battery pack current (discharge or charge) exceeded the maximum limit.
When it clears
The BMS detects that the condition clears.
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
Affected models
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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.