BMS family
BMS_a081_SW_Ctr_Close_Blocked
Not Available
What does the BMS_a081_SW_Ctr_Close_Blocked alert mean?
The battery management system (BMS) has prevented pack contactors from closing due to one or more other alerts.
What you'll see in your Tesla
- Not Available
What triggers it
One more BMS alerts that prevents pack contactors from closing is present.
When it clears
There are no alerts present that prevent the contactors from closing.
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.