Alerts
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| Signal Name | Description | Condition | Impact |
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A battery management board (BMB) has detected an over temperature condition in a battery module.
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A module thermistor has reported a higher temperature than expected.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) has detected that a brick has fallen below the minimum brick voltage.
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The BMS detects that a brick fell below the minimum brick voltage.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) has detected that a brick has exceeded the maximum brick voltage.
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The BMS detects that a brick exceeded the maximum brick voltage.
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Inability to charge, drive, or support the low voltage (LV) system
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The Battery Management System (BMS) is unable to read a pack birth date.
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The BMS is unable to read a pack birth date from the calibration block or derive one from the pack serial number on boot.
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If there is no histogram start time saved, histograms will not accumulate or save data without a valid pack birth date available.
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The Gateway packPerformanceDeviation config does not match the configured pack type.
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GTW_packPerformanceDeviation is not compatible with the configured pack type.
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This alert may indicate an incorrect config block, or that the installed pack is incompatible with the car config.
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The battery management system (BMS) detects that the high voltage (HV) battery config block does not match the configuration of the vehicle.
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GTW_packEnergy is not compatible with the configured pack type.
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This alert may indicate either an incorrect config block, or that the installed pack is incompatible with the car configuration.
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Battery pack 3 has pack voltage too low to allow dcdc support.
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Battery pack 3 has pack voltage below the voltage too low set threshold
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LV support may be blocked
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The battery management system (BMS) has detected that there is an over voltage event.
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The BMS detects that the bus voltage is higher than maximum voltage threshold.
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Inability to charge, drive, or support the low voltage (LV) system
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The Battery Management System (BMS) reports a previous destructive reset.
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The BMS experienced an unexpected reset.
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There is a temporary loss of High Voltage (HV) power.
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The battery management system (BMS) detects conditions that indicate a potential propagating thermal event.
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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.
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Indicates rapid temperature rise in conjunction with other critical alerts. Pack may remain inoperable and should be serviced according to proper procedures.
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The battery management system (BMS) does not have valid data for at least one brick voltage measurement.
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The BMS detects that it does not have valid voltage measurement data for at least one brick.
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Inability to charge, and power is reduced
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The Battery Management System (BMS) detects that one or more High Voltage Controller (HVC) voltage references is out of bounds.
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There is a significant difference between the BMS and High Voltage Processor (HVP) voltage reference readings.
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The vehicle may report inaccurate voltage measurements leading to alerts from the HV system.
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The battery management system is not receiving the expected CAN messages from the power conversion system (PCS).
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The BMS has not received the expected response from the PCS CAN.
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Inability to charge, drive, or support the low voltage (LV) system.
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The Battery Management System (BMS) detects an unexpected condition with its internal low voltage supply inputs.
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The output voltage of the standby power supply is outside of the expected bounds.
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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.
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The Bandolier Thermal Model was reset.
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The thermal model had invalid input data at wake from sleep, or the model temperature estimate diverged too far from the thermistor measurement.
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This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.
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The battery management system (BMS) detects a mismatch between the pack voltage and the sum of brick voltages.
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The BMS detects that the HV pack voltage differs from the sum of the brick voltages by more than 3%.
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Inability to charge, drive, or support the low voltage (LV) system
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The battery management system (BMS) detects that there is a brick voltage imbalance.
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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.
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This alert is primarily informational.
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The battery management system (BMS) has detected a condition affecting charge port (CP) functionality, making vehicle charging unavailable.
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The hardline from the CP to the BMS is active.
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Vehicle charging is unavailable.
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The battery management system (BMS) detects a possible state of charge (SOC) imbalance.
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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.
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Maximum SOC is reduced to 50%.
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The Calculated Amp-hour Capacity (CAC) difference of bricks within a module exceeds the acceptable threshold. This results in reduced battery performance and limits maximum range.
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The estimated imbalance between the average CAC and minimum CAC within a single module exceeds the imbalance threshold.
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Maximum charge and discharge current limits and maximum energy available are reduced, causing reduced battery performance and reduced maximum range.
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