Alerts

One or more battery management system (BMS) alerts that reduce the maximum charge limit are set.

Maximum charge is reduced.

A blocking condition does not allow the BMS to transition into the requested state.

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

The difference between max brick voltage and min brick voltage is above the brickV imbalance set threshold

Vehicle drive performance is degraded and vehicle will not charge

The BMS detects that the SOC is below the threshold to support driving.

The vehicle begins end-of-drive ramp down.

The estimated imbalance between the average CAC and minimum CAC within a single module exceeds the alert set threshold (CAC imbalance is not within acceptable range)

Maximum charge and discharge current limits and maximum energy available are reduced, causing reduced battery performance and limiting maximum range. BMS limp mode is triggered, with another alert present to indicate this condition.

The BMS detects that the estimated CAC imbalance between the average CAC and the minimum CAC of bricks within a single module exceeds the acceptable threshold.

Battery performance may be limited, which may reduce maximum range and may limit charging performance.

The estimated imbalance between average SOC and min SOC > SOC_IMBALANCE_WARNING_SET_THRESHOLD

Indication that brick imbalance is increasing and may result in a064, which limits max charge

The estimated imbalance between the average CAC and minimum CAC within a single module exceeds the imbalance threshold.

Maximum charge and discharge current limits and maximum energy available are reduced, causing reduced battery performance and reduced maximum range.

The BMS detects that the difference between the most-charged brick and the least-charge brick in the high voltage (HV) pack is greater than the acceptable threshold.

Maximum SOC is reduced to 50%.

The BMS has detected that the difference between the maximum brick voltage and the minimum brick voltage in the high voltage (HV) pack is greater than expected.

This alert is primarily informational.

The BMS detects that the HV pack voltage differs from the sum of the brick voltages by more than 3%.

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

The thermal model had invalid input data at wake from sleep, or the model temperature estimate diverged too far from the thermistor measurement.

This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.

The output voltage of the standby power supply is outside of the expected bounds.

The standby power supply is unable to power Electronic Control Units (ECUs) during sleep which leads to greater support from the Low Voltage (LV) battery.

The BMS has not received the expected response from the PCS CAN.

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

There is a significant difference between the BMS and High Voltage Processor (HVP) voltage reference readings.

The vehicle may report inaccurate voltage measurements leading to alerts from the HV system.

The BMS detects that it does not have valid voltage measurement data for at least one brick.

Inability to charge, and power is reduced

At least one brick under/over voltage alert was recently active, and at least one isolation alert was recently active, and at least one battery monitoring board (BMB) missing (MIA) alert was recently active, and the max thermistor temp exceeds the limit, and the pack temperature gradient (maxTemp - minTemp) exceeds the threshold, and that gradient is increasing at a rate greater than the slop threshold.

Indicates rapid temperature rise in conjunction with other critical alerts. Pack may remain inoperable and should be serviced according to proper procedures.

The BMS experienced an unexpected reset.

There is a temporary loss of High Voltage (HV) power.

The BMS detects that the bus voltage is higher than maximum voltage threshold.

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

The BMS detects that voltage of the flood port switch sensor indicates that one or more flood ports is open.

This alert is primarily informational and used for logging purposes.