VCBATT_a555 — LV Battery Cell Rebalancing
Full alert identifier: VCBATT_a555_LVBatteryCellRebalancing
Alert description
The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance and is attempting to rebalance the cell voltages. The vehicle will be kept awake to support the LV battery until the rebalancing attempt is complete.
Potential impact
The LV battery may suddenly become unavailable and unable to support vehicle electrical systems. The LV battery may require replacement, and a separate alert should be present to indicate this condition if applicable.
Set condition
The LVBMS detects that all LV battery cell voltages are not within 100mV of each other.
Clear condition
The LVBMS determines the LV battery has had enough time supported by the power conversion system (PCS) to rebalance the cell voltages.
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 |
|---|---|
Cell 1 Voltage
VCBATT_
|
V |
Cell 2 Voltage
VCBATT_
|
V |
Cell 3 Voltage
VCBATT_
|
V |
Cell 4 Voltage
VCBATT_
|
V |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of VCBATT_a555.