Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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The Low Voltage Battery Management System (LVBMS) detects high temperature at the low voltage (LV) battery MOSFET (internal protection transistor).
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The LVBMS MOSFET temperature has reached 100 deg C for 1 second.
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The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.
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No
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The Left Vehicle Controller (VCLEFT) detects a condition affecting the functionality of the reverse light.
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The reverse light is unplugged, does not draw current when turned on, or the eFuse is tripped.
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The reverse light may not turn on.
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No
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A condition is detected affecting rear presenting door handle functionality.
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A condition is detected that prevents the rear presenting door handle from presenting or retracting as expected, the door handle needs to be calibrated, or the door handle takes longer than expected to present. Alert log signal data should provide more information.
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The rear presenting door handle may not function as expected.
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No
|
|
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The vehicle controller has disabled communications over the bus that connects to the low voltage (LV) battery after detecting a condition (or conditions) that may cause the LV battery to become overdischarged. To avoid overdischarge that could make the LV battery unrecoverable, do not restore communications until the LV system is fully supported by the Power Conversion System (PCS).
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The vehicle controller detects the LV battery may become overdischarged unless it sleeps, and also determines vehicle conditions are OK to disable LV battery communications.
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The vehicle controller will have less information about the LV battery until it is serviced. Headlamps and windshield wipers may be unavailable, or may not function as expected.
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No
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The low voltage (LV) battery type detected on startup is unknown. This usually happens the first time a controller is powered on, or after non-volatile memory (NVM) corruption, which will be indicated by another alert.
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The LV battery type detected on startup is unknown.
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LV battery performance may be limited. LV battery support for vehicle electrical systems may be limited or unavailable.
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No
|
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The low voltage (LV) battery is discharging, even though high voltage (HV) system support has been requested. Vehicle loadshedding will occur, and a separate alert will be present to indicate that condition.
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LV battery is being discharged, even though the HV system should be supporting both the LV battery and the LV bus.
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Vehicle loadshedding is triggered, and a separate alert will be present to indicate that condition and its impacts.
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No
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Trunk fold flat switch is unavailable, either due to a condition affecting functionality or because it is disconnected.
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A condition affecting trunk fold flat switch is detected, or the switch is disconnected.
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Trunk fold flat functionality for left and right seats is unavailable.
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No
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Rear door handle has presented when not requested.
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A rear door handle presents when no request has been made.
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The rear door handle(s) may present when the vehicle is in motion.
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No
|
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The low voltage battery management system (LVBMS) reports it has detected the charge current is above the maximum limit for the low voltage (LV) battery cells in their present condition.
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The LVBMS detects the charge current is above the maximum limit for the LV battery cells in their present condition for 1 second.
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Exceeding charge current limits may shorten the life of LV battery cells, leading to accelerated degradation and replacement.
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No
|
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A condition is detected affecting front presenting door handle functionality.
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A condition is detected that prevents the front presenting door handle from presenting or retracting as expected, the door handle needs to be calibrated, or the door handle takes longer than expected to present. Alert log signal data should provide more information.
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The front presenting door handle may not function as expected.
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No
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An interior door release request is inhibited by Autopilot because of a passing pedestrian, vehicle or cyclist. Pressing the interior door release button a second time will allow the door to open.
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The occupant requests an interior door release while Autopilot has inhibited release due to detecting an oncoming pedestrian, vehicle or cyclist.
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The occupant's interior door release request is temporarily inhibited.
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No
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The low voltage (LV) battery is not communicating as expected, indicating a potential disconnection with the vehicle controller.
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Electronic connector position assurance (ECPA) state is signal not available (SNA), or the intelligent battery sensor (IBS) is not functioning as expected and the low voltage battery management system (LVBMS) is not communicating (MIA).
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Loss of low voltage (LV) battery communication with vehicle controller, so the vehicle electrical system may only be supported via the power conversion system (PCS).
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No
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The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance.
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The LVBMS detects that all LV battery cell voltages are not within 150mV of each other.
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The LV battery may suddenly become unavailable and unable to support vehicle electrical systems. The LV battery may require replacement, and a separate alert should be present to indicate this condition if applicable.
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No
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The left vehicle controller (VCLEFT) detects that the center display tilt mechanism does not have the valid rate tables needed for pinch detection and requires the functional test, PROC_VCLEFT_DISPLAY-MECH-TEST, to be run.
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PROC_VCLEFT_DISPLAY-MECH-TEST runs unsuccessfully, is not finished running, or has not been run.
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The center display tilt mechanism may not function as expected, which may lead to false pinches.
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No
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The eFuse application-specific integrated circuit (ASIC) on the vehicle controller has incorrect thresholds set.
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The vehicle controller detects incorrect threshold values on its eFuse ASIC for 1 second.
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The eFuse ASIC on the vehicle controller may not function as expected.
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No
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The low voltage (LV) battery type detected on startup does not match the LV battery type reported by the vehicle gateway (GTW) configuration.
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The LV battery type detected on startup does not match the LV battery type reported by the GTW configuration.
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LV battery performance may be limited. LV battery support for vehicle electrical systems may be limited or unavailable.
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No
|
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The Low Voltage (LV) battery internal protection transistor (MOSFET) temperature is greater than the temperature limit.
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The MOSFET temperature is greater than the expected set temperature limit for longer than expected.
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There may be a loss of LV battery pack power. This alert may indicate a high impedance or other conditions affecting the expected operation of the LV battery MOSFET.
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No
|
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The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance and is attempting to rebalance the cell voltages. The vehicle will be kept awake to support the LV battery until the rebalancing attempt is complete.
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The LVBMS detects that all LV battery cell voltages are not within 100mV of each other.
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The LV battery may suddenly become unavailable and unable to support vehicle electrical systems. The LV battery may require replacement, and a separate alert should be present to indicate this condition if applicable.
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No
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Front door handle has presented when not requested.
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A front door handle presents when no request has been made.
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The front door handle(s) may present when the vehicle is in motion.
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No
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The calibration for the third row seat was unsuccessful or did not run.
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Third row seat movement is requested, but the seat calibration was unsuccessful or did not run.
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Automatic fold and unfold movements for the third row seat are unavailable. Only manual seat adjustments are available.
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No
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