BMS family
BMS_a139_SW_DC_Link_V_Irrational
Not Available
What does the BMS_a139_SW_DC_Link_V_Irrational alert mean?
The battery management system (BMS) has detected a mismatch between the pack voltage and DC Link voltage.
What you'll see in your Tesla
- Not Available
What triggers it
The battery management system (BMS) has detected a mismatch between the pack voltage and DC Link voltage.
When it clears
The BMS detects that the condition clears.
Potential impact
Inability to charge, drive, or support the low voltage (LV) system
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.