BMS_a131_Bleed_FET_Failure
Not Available
What does the BMS_a131_Bleed_FET_Failure alert mean?
A bleed Field-Effect Transistor (FET) on the Battery Management Board (BMB) is not operating as designed. This will prevent the battery from balancing the brick by decreasing the brick voltage.
What you'll see in your Tesla
- Not Available
What triggers it
Upon a periodic wake, after an ECU reset, or every 6 hours, the Battery Management System (BMS) will test all bleed switches by switching them on in turn. If the sensed brick voltage does not significantly change, this alert is set.
When it clears
The bleed test reports sufficient voltage change across each brick.
Potential impact
The bleed FET will prevent the battery from properly balancing the brick by bleeding the voltage down. There is a decrease in available energy to the vehicle potentially leading to decreased range.
Affected models
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