BMS family
BMS_a150_SW_Missing_Part_Number
Vehicle configuration mismatch
What does the BMS_a150_SW_Missing_Part_Number alert mean?
The battery management system (BMS) detects a missing, incorrect, or unsupported part number.
What you'll see in your Tesla
- Vehicle configuration mismatch
- Service is required
What triggers it
The BMS detects an unexpected part number.
When it clears
The BMS detects the expected part number.
Potential impact
The BMS is unable to initialize parameters related to printed circuit board assembly (PCBA) configuration.
Affected models
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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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.