BMS family
BMS_a079_Max_Charge_Level_Exceeded
Unable to charge - Maximum charge level reached
What does the BMS_a079_Max_Charge_Level_Exceeded alert mean?
The maximum charge level of the high voltage (HV) battery is exceeded.
What you'll see in your Tesla
- Unable to charge - Maximum charge level reached
- Reduced maximum charge level - Schedule service
What triggers it
One or more battery management system (BMS) alerts that reduce the maximum charge limit are set, and the instantaneous charge level is higher than that limit.
When it clears
The HV battery's charge level falls below the reduced maximum charge limit.
Potential impact
Vehicle will not be able to charge if connected to a power source, as the reduced maximum HV battery charge level is exceeded.
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.