Alerts
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| Signal Name | Description | Condition | Impact |
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The battery management system (BMS) detects that the calculated Amp-hour capacity (CAC) difference between bricks within a single module exceeds the acceptable threshold, which may reduce battery performance.
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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.
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Battery performance may be limited, which may reduce maximum range and may limit charging performance.
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Calculated Amp-hour Capacity (CAC) difference of bricks within a module exceeds acceptable threshold. This results in reduced battery performance and limits maximum range. Vehicle enters Battery Management System (BMS) limp mode.
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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)
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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.
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The BMS detects that the state of charge (SOC) of the high voltage (HV) battery is too low to support driving.
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The BMS detects that the SOC is below the threshold to support driving.
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The vehicle begins end-of-drive ramp down.
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The battery management system (BMS) cannot transition into the requested state because of a blocking condition.
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A blocking condition does not allow the BMS to transition into the requested state.
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Inability to charge, drive, or support the low voltage (LV) system
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The maximum charge level of the battery is limited by one or more alerts.
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One or more battery management system (BMS) alerts that reduce the maximum charge limit are set.
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Maximum charge is reduced.
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The battery management system (BMS) has detected a condition that prevents it from disabling the charge session.
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The HV battery is charging and the BMS detects a condition that prevents it from disabling the charge session.
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This alert is primarily informational and used for logging purposes.
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The battery management system (BMS) detects that the high voltage (HV) battery is not charging enough while in a charging state.
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The BMS detects that the HV pack has been discharged to below the set threshold while charging.
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Inability to charge
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The maximum charge level of the high voltage (HV) battery is exceeded.
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One or more battery management system (BMS) alerts that reduce the maximum charge limit are set, and the instantaneous charge level is higher than that limit.
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Vehicle will not be able to charge if connected to a power source, as the reduced maximum HV battery charge level is exceeded.
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The battery management system (BMS) has prevented pack contactors from closing due to one or more other alerts.
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One more BMS alerts that prevents pack contactors from closing is present.
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Inability to charge, drive, or support the low voltage (LV) system
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The difference between max brick voltage and min brick voltage is greater than the allowed threshold
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The difference between max brick voltage and min brick voltage is above the brickV imbalance set threshold
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Vehicle drive performance is degraded and vehicle will not charge
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High voltage isolation dropped under threshold in many drive sessions
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Isolation or isolation degradation alert is set many times
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Vehicle will be unable to restart
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The BMS has detected high discharge current during DC charge session
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The discharge current is above an acceptable threshold while DC charging is enabled
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The vehicle will not charge until the charge cable is removed and the alert is cleared
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This alert is an early warning for a064 SOC Imbalance, which limits the battery's max SOC. It triggers with a lower threshold than SOC imbalance
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The estimated imbalance between average SOC and min SOC > SOC_IMBALANCE_WARNING_SET_THRESHOLD
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Indication that brick imbalance is increasing and may result in a064, which limits max charge
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A battery pack 3 module temperature is above the warning temperature limit.
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A battery pack 3 module temperature is above the warning temperature limit for X duration (in seconds)
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Power/drive limits may be reduced
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Battery pack 1 has pack voltage too low to allow dcdc support.
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Battery pack 1 has pack voltage below the voltage too low set threshold
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LV support may be blocked
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Incorrect, missing, or unsupported board part number programmed.
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The BMS detects an unexpected board part number
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The BMS is unable to initialize parameters related to printed circuit board assembly (PCBA) configuration
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Incorrect or missing configuration block programmed.
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The BMS config block may be missing, incorrect, or unsupported
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The BMS is unable to initialize configuration parameters
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Subpack 3 is not available and needs to be taken offline.
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Subpack 3 needs to be taken offline
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Subpack 3 will be taken offline
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Subpack 2 is not available and needs to be taken offline.
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Subpack 2 needs to be taken offline
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Subpack 2 will be taken offline
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Subpack 1 is not available and needs to be taken offline.
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Subpack 1 needs to be taken offline
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Subpack 1 will be taken offline
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