BMS_f021 — SW Dr Limits Regulation

Full alert identifier: BMS_f021_SW_Dr_Limits_Regulation

Alert description

The battery management system (BMS) limits power because the pack current, pack voltage, or brick voltage, is outside of the expected bounds.

Potential impact

Inability to charge, drive, or support the low voltage (LV) system

Set condition

The BMS detects that regen current, discharge current, pack voltage, or brick voltage is too high or too low. Alert log signal data provides information on the specific condition(s) detected.

Clear condition

The BMS detects that the condition clears.

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal	Unit
Brick V `BMS_a021_brickV`	V
Current Limit `BMS_a021_currentLimit`	A
Pack Current `BMS_a021_packCurrent`	A
Pack Voltage `BMS_a021_packVoltage`	V
Voltage Limit `BMS_a021_voltageLimit`	V

Signal	Unit
Reg Err Type `BMS_a021_regErrType` 0 NONE 1 PACKVLOW 2 PACKVHIGH 3 PACKI DCH 4 PACKI CHG 5 BRICKVLOW 6 BRICKVHIGH 7 UNUSED1	—

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of BMS_f021.