Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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The battery management system (BMS) detects that one or several battery monitoring boards (BMB) are unable to enumerate when the vehicle starts.
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The battery management system (BMS) detects that one or several battery monitoring boards (BMB) are unable to enumerate when the vehicle starts.
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
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The battery management system (BMS) detects an internal issue with the flash memory on a battery monitoring board (BMB).
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The BMS detects an issue with the random-access memory (RAM) on a BMB.
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
|
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The battery management system (BMS) detects that the temperature of a module is too high.
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A battery monitoring board (BMB) reports a module temperature above the set threshold.
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
|
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A battery monitoring board (BMB) reports to the battery management system (BMS) that it is overheating.
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A BMB reports a temperature above the maximum threshold.
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
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A battery monitoring board (BMB) reports a power-on reset event, indicating that the BMB may have previously been unavailable for communication with the battery management system (BMS).
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Any BMB experiences a power loss or internal error that causes a power-on reset event.
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
|
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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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No
|
|
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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
|
No
|
|
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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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No
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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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No
|
|
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The battery management system (BMS) reported that the thermal controller (THC) was missing (MIA) on controller area network (CAN).
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The BMS has not received the full set of expected messages from the THC for ten times the message period.
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
|
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The battery management system (BMS) has detected an issue that prevents precharging and prevents the pack contactors from closing.
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The BMS has detected an issue that prevents precharging. 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
|
No
|
|
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The battery management system (BMS) has detected that the high voltage (HV) battery pack voltage differs from the sum of the brick voltages, making the HV battery unavailable for charging, driving, or supporting the low voltage (LV) battery.
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The high voltage (HV) battery pack voltage differs from sum of all the brick voltages.
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The vehicle is unable to charge or drive. The high voltage (HV) battery cannot support the low voltage (LV) battery.
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No
|
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The battery management system (BMS) has detected 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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Power is reduced.
|
No
|
|
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The battery management system (BMS) has detected an issue during the precharge process, and the pack contactors were unable to close.
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The BMS detects an issue during the precharge process. 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
|
No
|
|
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The battery management system (BMS) has detected that a pack contactor is not getting enough power.
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The BMS detects that a pack contactor input voltage dropped below the limit threshold.
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Inability to charge, drive, or support the low voltage (LV) system
|
No
|
|
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The battery management system (BMS) detects an issue with the high voltage (HV) internal current sensor.
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The measured current is sufficiently far from zero with contactors open, the current sensor is reporting the same current for too many samples in a row, or the current sensor is behaving irrationally (for example, it is dropping packets).
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
|
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The battery management system (BMS) is not receiving communication from a battery monitoring board (BMB), indicating that the BMB may be unavailable (MIA).
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The BMS does not receive one or more of the expected voltage or temperature sensor readings from a BMB.
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Inability to charge, drive, or support the low voltage (LV) system
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No
|
|
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The battery management system (BMS) detects one or more thermistors report that a specific module has an outlier temperature when compared to the other modules. This alert is for logging purposes only.
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One or more thermistors report that a specific module has an outlier temperature when compared to the other modules.
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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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No
|
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The battery management system (BMS) detects that the pack voltage does not match the sum of the 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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No
|
|
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The battery management system (BMS) has detected a software overcurrent event.
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The high voltage (HV) battery pack current (discharge or charge) exceeded the maximum limit.
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Inability to charge, drive, or support the low voltage (LV) system
|
No
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