Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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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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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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No
|
|
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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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No
|
|
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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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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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A request to change the HVC or Contactor power state has been denied.
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Electronic Parking Brake Right detects high voltage lockout request timed out after 0.5 seconds
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High Voltage control or contactor may be faulted
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No
|
|
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A request to change the DI power state has been denied.
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Electronic Parking Brake Left detects drive inverter lockout request timed out after 0.5 seconds
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Drive inverter may be faulted
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No
|
|
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The Electronic Parking Brake (EPB) reports the driver is leaving and parks the vehicle.
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The EPB attempted to park due to the driver being detected as leaving.
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The EPB will be applied.
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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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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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No
|
|
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One Electronic Parking Brake (EPB) not applied, and road grade is too steep to secure vehicle and trailer with only one EPB
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Only one Electronic Parking Brake (EPB) applied and grade too steep for one EPB to hold the vehicle with a trailer attached
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Car may not be secured by Electronic Parking Brake on current road grade, may be free rolling
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No
|
|
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Brake temperature is above 200C and slope is greater than 5%
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One Electronic Parking Brake faulted and the max of the rear brake calipers is hotter than 200 C and slope is greater than 5%
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Car may not be secured by Electronic Parking Brake on current road grade, may be free rolling
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No
|
|
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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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No
|
|
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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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No
|
|
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One or more expected controller area network (CAN) messages from the interior cabin radar (ICR) electronic control unit (ECU) was not received.
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An expected CAN message from the ICR ECU has not been received within the expected timeout, or the CAN message drop rate is too high while the ICR is CAN active. The ICR ECU is considered CAN active when VCFRONT_vehGoToSleep is 0.
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Intrusion alarm functionality may be missing.
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No
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|
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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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An issue is indicated from the non-volatile memory manager.
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Non-volatile memory misconfiguration or underlying flash/filesystem error.
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Non-volatile memory records may be incorrect or missing.
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No
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Warns if the processor has experienced a reset due to power loss.
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Sudden power loss.
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Controller is MIA for some time.
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No
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Warns if the processor has experienced a reset due to watchdog reset.
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A watchdog (external or internal) was not serviced in time.
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Controller is MIA for some time.
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No
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EPBM_w103_targetNotReachedR
|
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-
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No
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