BMS family
BMS_a063_SW_ChargePort_Fault
Unable to charge
What does the BMS_a063_SW_ChargePort_Fault alert mean?
The battery management system (BMS) has detected a condition affecting charge port (CP) functionality, making vehicle charging unavailable.
What you'll see in your Tesla
- Unable to charge
- Disconnect and retry
What triggers it
The hardline from the CP to the BMS is active.
When it clears
The hardline from the CP to the BMS is cleared / no longer active.
Potential impact
Vehicle charging is unavailable.
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.