BMS family
BMS_a177_SW_Energy_Buffer_Size
Not Available
What does the BMS_a177_SW_Energy_Buffer_Size alert mean?
The Battery Management System (BMS) energy buffer is greater than the acceptable threshold. This results in an inaccurate range estimate.
What you'll see in your Tesla
- Not Available
What triggers it
The BMS energy buffer is greater than the acceptable threshold.
When it clears
The BMS energy buffer is within the acceptable threshold. The buffer can be reduced by charging the vehicle to 100%.
Potential impact
A large energy buffer results in an inaccurate battery State of Charge (SOC) estimation causing a poor range estimate.
Affected models
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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