BMS family
BMS_a001_Pack_Config_Mismatch
Vehicle configuration mismatch
What does the BMS_a001_Pack_Config_Mismatch alert mean?
The battery management system (BMS) detects that the high voltage (HV) battery config block does not match the configuration of the vehicle.
What you'll see in your Tesla
- Vehicle configuration mismatch
- Service is required
What triggers it
GTW_packEnergy is not compatible with the configured pack type.
When it clears
GTW_packEnergy is compatible with the configured pack type.
Potential impact
This alert may indicate either an incorrect config block, or that the installed pack is incompatible with the car configuration.
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.