Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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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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No
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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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No
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An issue with the low voltage (LV) electrical system requires the vehicle to come to a stop immediately. The vehicle should enter graceful power-off (GPO) to exit drive, and a separate alert should indicate that condition.
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Lead acid: Low voltage (LV) battery voltage below threshold for 3 seconds (3s); transistor gating LV battery connection is open (no current flow); vehicle load shedding is active; or reverse battery transistor issue detected.
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The vehicle will not enter drive. If the vehicle is driving, it will exit drive through graceful power-off (GPO) to come to a stop immediately. A separate alert should be present to indicate the GPO
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No
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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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No
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The Low Voltage (LV) battery needs to be replaced.
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LV battery diagnosed as needing replacement to maintain full vehicle functionality
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The LV battery may lack the power to support vehicle auxiliary systems. The vehicle may be unable to start and range loss may be experienced.
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No
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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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No
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Front door latch release cam cannot find home position
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Door latch actuator was resetting the release cam to its home position and timed out
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Door may not be able to close
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No
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HSD for seat heater has shorted
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HSD for front seat heater trips
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seat heater isn't functional
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No
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The vehicle cannot enter Drive state because the measured low voltage (LV) battery voltage is too high.
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The measured LV battery voltage is greater than its maximum operating voltage threshold for 3 consecutive seconds.
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Vehicle may be unable to drive, or may take longer than expected to enter Drive state. Voltage regulation performance may be reduced across the low voltage electrical system.
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No
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One or more of the serial peripheral interface (SPI) messages the vehicle controller receives periodically from the Intelligent Battery Sensor (IBS) is not received, indicating the IBS may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected SPI messages from the IBS within the expected time frame.
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The vehicle may not sleep, and the low voltage (LV) battery may be overcharged or undercharged.
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No
|
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The battery voltage measurement, nominally 12 volts, was higher than expected.
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The vbat voltage measurement is higher than 18.5 volts.
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12V Battery or low voltage systems may be damaged
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No
|
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Steering column in / out motor is not calibrated. The steering column will hit hard stops and not recall.
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Steering column is uncalibrated. The calibration routine has not run, ran unsuccessfully, or the steering column reports that it reached an implausible in / out position.
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Steering column hits hard stops during in / out adjustments and will not recall to the proper position.
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No
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HVAC intake actuator faulted.
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The intake actuator detected a fault (check context data for type of fault)
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The heater and the A/C and heater may be disabled
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No
|
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Steering column up / down motor is not calibrated. The steering column will hit hard stops and not recall.
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Steering column is uncalibrated. The calibration routine has not run, ran unsuccessfully, or the steering column reports that it reached an implausible up / down position.
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Steering column hits hard stops during up / down adjustments and will not recall to the proper position
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No
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The 0 drive offset current captured as calibration was higher than expected.
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The calibration offset current measured when motor is not being driven was higher than 3.0 amps
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Caliper, Electronic Parking Brake controller, or harness could be damaged. Components may be damaged by high temperatures
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No
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The caliper may be disconnected.
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The Electronic Parking Brake motor is idle, and the positive and negative lead's voltage measurement are more than 0.25V different
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Electronic Parking Brake may not be able to apply or release
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No
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One or more of the messages the vehicle controller receives periodically from the Redundant Controller Unit (RCU) is not received, indicating the RCU may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the RCU within the expected time frame.
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Vehicle functions that depend on the RCU may be unavailable or may not function as expected.
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No
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One or more of the messages the vehicle controller receives periodically from the Brake Booster (BB) is not received, indicating the BB may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the BB within the expected time frame.
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Vehicle functions that depend on the BB may be unavailable or may not function as expected.
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No
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Motor current was higher than expected.
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Motor current measurement, with calibration offset subtracted, was higher than 17 amps.
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Caliper motor or harness may be damaged
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No
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One or more of the messages the vehicle controller receives periodically from the AID (Alcohol Interlock Device) is not received, indicating the AID may be unavailable (MIA).
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The vehicle controller does not receive one or more of the expected messages from the AID within the expected time frame.
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Vehicle functions that depend on the AID may be unavailable or may not function as expected.
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No
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