Alerts
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| Signal Name | Description | Condition | Impact |
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A battery monitoring board (BMB) reports a brick over voltage event, indicating that the BMB has detected a brick voltage higher than the maximum allowed brick voltage threshold.
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A brick voltage exceeds the maximum allowed brick voltage threshold.
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Inability to charge, drive, or support the low voltage (LV) system
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A battery monitoring board (BMB) reports a brick under voltage event, indicating that the BMB has detected a brick voltage lower than the minimum allowed brick voltage threshold.
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A brick voltage drops below the minimum allowed brick 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) does not receive messages from the external fast charge equipment.
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The BMS does not receive one or more required signals from the external fast charge equipment.
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The vehicle is unable to fast charge, but AC charging still operates as designed.
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The battery management system (BMS) detects low high voltage (HV) isolation when pack contactors were closed.
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The BMS has detected that the HV isolation dropped below the minimum warning threshold multiple times in a short period.
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This alert is primarily informational and is used for logging purposes. It is intended to flag low isolation issues before they are serious enough to prevent driving.
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The battery management system (BMS) has detected a battery monitoring board (BMB) voltage reference is unstable.
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The BMS detects a BMB voltage reference is unstable.
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This alert is primarily informational.
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The battery management system (BMS) has detected a potential battery monitoring board (BMB) hardware issue related to the analog-to-digital converter (ADC) voltage reference (VREF).
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The BMS has detected that several samples from the ADC do not match, which indicates a reference problem.
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This alert is primarily informational and is used for logging purposes.
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The battery management system (BMS) has detected that the negative contactor is stuck or welded.
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The BMS detects that the negative contactor is stuck or welded.
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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 the positive contactor is stuck or welded.
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The BMS detects that the positive contactor is stuck or welded.
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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 high voltage (HV) isolation is too low while pack contactors are closed.
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The BMS detects that HV isolation is below the warning threshold while contactors are closed.
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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 it is taking too long to reach the target precharge voltage and prevents packs contactors from closing. This indicates that the voltage on the DC link bus rose more slowly than expected.
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The BMS detects that the voltage on the DC link bus is rising slower than it should be. Alert log signal data provides information on the specific condition(s) detected.
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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 the length of time it took the vehicle to precharge was too short.
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The BMS detected that the voltage on the DC link bus rose faster 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 is over-discharged.
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The BMS detects that a brick voltage measured below the minimal threshold.
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Inability to charge, drive, or support the low voltage (LV) system
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The vehicle's State of Charge (SOC) changed when the pack is resting from open-circuit voltage (OCV) calibration.
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The SOC change is greater than specific threshold.
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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) does not receive one or more expected controller area network (CAN) messages from the drive inverter (DI) and has reported it as missing (MIA).
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The BMS has not received one or more expected CAN messages from the DI.
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Power is reduced.
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The battery management system (BMS) has detected that the Complex Programmable Logic Device (CPLD) version is not supported by the current firmware (FW).
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The BMS detects that the CPLD version is not supported by the current firmware FW.
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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 the high voltage (HV) isolation contactor closed below the warning threshold.
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The BMS detects that the HV isolation was below the warning threshold when pack contactors closed.
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This alert indicates that HV isolation is low, but above the sufficient level for vehicle operation.
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The battery management system (BMS) has detected an issue with the low voltage (LV) power supply to the contactors.
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The BMS detects that the input voltage from the LV system is too low.
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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 there is a high voltage (HV) battery current sensor (shunt) error.
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The BMS detects a HV battery current sensor (shunt) is unable to trip its over current fault line.
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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 a that there is an issue with the DC link voltage sensor.
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The BMS detects that there is an issue with the DC link voltage sensor.
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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 the voltage of one or more bricks is above the warning threshold.
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The BMS detects that one or more bricks' voltage is above the warning threshold.
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This alert is primarily informational and is used for logging purposes.
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