BMS family
BMS_a099_SW_BMB_Communication
Not Available
What does the BMS_a099_SW_BMB_Communication alert mean?
The battery management system (BMS) cannot communicate with all of the battery monitoring boards (BMBs).
What you'll see in your Tesla
- Not Available
What triggers it
A communication issue with the BMB daisy chain is detected.
When it clears
No communication issues with the BMB daisy chain have been detected.
Potential impact
This alert is primarily informational, and may indicate a loss of BMB sensor data
Affected models
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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