BMS family
BMS_a162_SW_No_Power_For_Support
Unable to drive
What does the BMS_a162_SW_No_Power_For_Support alert mean?
The battery management system (BMS) does not have enough power to provide low voltage (LV) support.
What you'll see in your Tesla
- Unable to drive
- Battery charge level too low
What triggers it
The BMS detects that the high voltage (HV) state of charge (SOC) is too low to support the LV system.
When it clears
The BMS detects that the HV SOC is high enough to support the LV system.
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.