Alerts
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| Signal Name | Description | Condition | Impact |
|---|---|---|---|
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The Rear Vehicle Controller (VCREAR) open circuit detection for the Power Conversion System (PCS) has tripped.
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No significant current is detected for 5s continuously between VCREAR and PCS while VCREAR is expecting PCS to be providing power.
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VCREAR and PCS may be electrically disconnected. Investigate harness and connections.
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The Thigh Support Motor is uncalibrated
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The motor is uncalibrated
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Seat position recall may be unavailable
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Electronic Parking Brake apply failed.
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Electronic Parking Brake faulted during apply && (nonterminal == FALSE)
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Electronic Parking Brake apply in progress will be stopped due to the fault, caliper may not be fully applied
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The communication link between Electronic Parking Brake (EPB) and Electronic Parking Brake Monitor (EPBM) is not functioning as expected.
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Either the Cyclic Redundancy Check (CRC) check has not completed as expected, or a message has not been received for 100ms. Alert disabled during over-the-air (OTA) firmware updates.
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Electronic Parking Brake will not apply or release.
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Electronic Parking Brake was unable to release due to fault.
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Electronic Parking Brake faulted during release && (nonterminal == FALSE)
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Electronic Parking Brake release in progress will be stopped due to the fault, caliper may not have fully released
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Electronic Parking Brake release was interrupted. Release will be retried.
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(unitFaultStatus == FAULT_STATUS_RETRY) && (csmRequest == release)
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Electronic Parking Brake did not release, it will retry a release and enter fault if retry fails
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Electronic Parking Brake apply was interrupted. Apply will be retried.
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(unitFaultStatus == FAULT_STATUS_RETRY) && (csmRequest == apply) && (stateRequest != ESM_DYNAMIC)
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Electronic Parking Brake did not apply, it will retry an apply and enter fault if retry fails
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One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).
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One or more of the expected messages from the DIF ECU is not received.
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Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.
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Motor negative lead voltage is lower than expected while active
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The negative lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.
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Caliper motor or harness may be damaged
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Motor positive lead voltage is higher than expected while active
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The positive lead voltage measurement is higher than expected. This could be higher than 0.1 voltages if motor is driven in release direction, or higher than estimated PWM voltage if driven in the apply direction.
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Caliper motor or harness may be damaged
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One or more of the messages the vehicle controller receives periodically from the Steering Column Control Module (SCCM) is not received, indicating the SCCM may be unavailable (MIA).
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One or more of the expected messages from the SCCM is not received.
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Vehicle may be unable to shift between drive modes.
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A condition affecting the right rear side marker light has been detected.
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The right rear side marker light driver reports a condition affecting its operation.
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The right rear side marker light may not operate as expected.
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Motor positive lead voltage is lower than expected while active
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The positive lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.
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Caliper motor or harness may be damaged
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The battery voltage measurement, nominally 12 volts, was lower than expected.
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The vbat voltage measurement, is lower than 6.0 volts. If the measurement is lower than 0.25 volts, we do not set this alert, as this would indicated the switch supply is disabled.
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12V Battery or low voltage systems may be damaged
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Electronic Parking Brake was not able to determine caliper state on boot.
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Caliper state saved is unknown, corrupted, or mismatches Electronic Parking Brake Monitor
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Problem with initializing Electronic Parking Brake
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A condition affecting the license plate light has been detected.
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The license plate light driver reports a condition affecting its operation.
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The license plate light may not operate as expected.
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The low voltage (LV) battery is no longer supported by the power conversion system (PCS) due to a condition affecting the LV system. The vehicle low voltage electrical system needs to shed electrical loads by cutting power to some systems / electronic control units (ECUs)
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Low voltage (LV) battery is not supported by the power conversion system (PCS)
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All nonessential features / components will no longer be available, with support reserved for critical functions like operating doors, windows, exterior lights, and front trunk (frunk).
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User facing to warn that Electronic Parking Brake is in service mode and many Electronic Parking Brake features are disabled
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EPB_unitStatus == SERVICE or SERVICE_RELEASING.
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Electronic Parking Brake will not automatically apply.
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Electronic Parking Brake is preparing to enter winch mode
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Winch mode request has been made.
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Winch mode may not be entered successfully unless customer keeps foot on brake
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Rear dome power supply is currently faulted
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Rear dome power supply is currently faulted
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Loss of vanity light functionality
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