Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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The battery management system (BMS) has detected that the fast charger is not compatible with the firmware (FW) version installed on the vehicle.
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The BMS detects that the vehicle FW is not compatible with the fast charger.
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Inability to DC fast charge
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No
|
|
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The battery management system (BMS) has detected an issue that prevents DC fast charging.
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The BMS detects a condition that prevents fast charging.
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Inability to DC fast charge
|
No
|
|
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The battery management system (BMS) detects a condition that would damage the high voltage (HV) system, so it puts the vehicle in limp mode.
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The BMS has detected a condition that would damage the HV system if the vehicle continues to drive.
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Acceleration and top speed are reduced, and regenerative breaking is reduced.
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No
|
|
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The battery management system (BMS) has limited the rate of charging until cell temperatures increase.
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The BMS detects charging is active and the cell temperature is below the minimum threshold.
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The HV battery charge rate is limited by cold cell temperature, and input charge power is applied to heating the pack.
|
No
|
|
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The battery management system (BMS) has put the high voltage (HV) battery into an end-of-drive ramp down due to a low state of charge (SOC).
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The BMS has detected the SOC has crossed below the minimum threshold.
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Inability to charge, drive, or support low voltage (LV) system
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No
|
|
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The battery management system (BMS) has reduced output power until the vehicle charges.
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The BMS detects that the high voltage (HV) battery state of charge (SOC) is too low.
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Output power may be reduced.
|
No
|
|
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The battery management system (BMS) has detected that a charge cable is inserted when the vehicle attempts to shift into Drive.
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The BMS detects that the vehicle attempted to shift into drive while a charge cable is inserted.
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Inability to drive
|
No
|
|
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The battery management system (BMS) has detected that there is not enough power from the high voltage (HV) battery to drive.
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The BMS detects that the HV battery state of charge (SOC) is below the threshold required to drive.
|
Inability to drive
|
No
|
|
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The battery management system (BMS) has detected that the high voltage (HV) battery is not charging.
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The BMS detects that the power source is too weak, or the battery is heating or cooling.
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Battery charge level may not increase.
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No
|
|
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The battery management system (BMS) has detected that precharge was too slow to allow fast charge (FC).
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The BMS detects that the voltage on the DC link bus is rising slower than it should be.
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The vehicle cannot DC FC.
|
No
|
|
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Detect if the contents of the COV or CUV registers are wrong.
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COV or CUV disable bit is asserted for more than 10 consecutive seconds.
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Failure to detect HW overvoltage / undervoltage scenarios
|
No
|
|
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The Battery Management System (BMS) detects an open circuit on the Voltage Sense Harness (VSH).
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There is voltage growth in the opposite direction among two bricks.
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Vehicle is unable to drive.
|
No
|
|
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The Battery Management System (BMS) has detected the HV battery pyro fuse is less than 1 months from end of life. The fuse must be replaced with a new self-powered hybrid pyro fuse.
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BMS detects that the HV battery pyro fuse is less than 1 months from end of life.
|
Pyro fuse is no longer functional
|
No
|
|
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The Battery Management System (BMS) has detected the High Voltage (HV) battery pyro fuse is close to expiration or expired. The fuse must be replaced with a new self-powered hybrid pyro fuse.
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BMS detects that the HV battery pyro fuse is 15 months past its recommended end of life.
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The pack contactors are blocked from closing and the vehicle is unable to drive.
|
No
|
|
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The battery management system (BMS) has detected that pack contactor degradation has exceeded the maximum threshold.
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The BMS detects that the pack contactor stress estimate is above the warning limit threshold.
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This alert is primarily informational and serves as an early warning of pack contactor degradation.
|
No
|
|
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The standby supply output voltage is less than expected. The standby supply is unavailable.
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With the standby supply enabled, the output voltage measured by the Battery Management System (BMS) is less than the vehicle's 12V input measurement for a significant amount of time.
|
The standby supply is unavailable.
|
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.
|
No
|
|
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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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No
|
|
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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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No
|
|
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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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No
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