BMS family
BMS_a064_SW_SOC_Imbalance
Not Available
What does the BMS_a064_SW_SOC_Imbalance alert mean?
The battery management system (BMS) detects a possible state of charge (SOC) imbalance.
What you'll see in your Tesla
- Not Available
What triggers it
The BMS detects that the difference between the most-charged brick and the least-charge brick in the high voltage (HV) pack is greater than the acceptable threshold.
When it clears
The BMS has detected that the difference between the maximum brick voltage and the minimum brick voltage is below the acceptable threshold.
Potential impact
Maximum SOC is reduced to 50%.
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.