Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
|
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
|
Drive inverter may be faulted
|
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.
|
No
|
|
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Electronic Parking Brake was unable to release fully.
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Electronic Parking Brake faulted during release && (nonterminal == TRUE)
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Electronic Parking Brake may not be released, and caliper may be obstructed
|
No
|
|
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Electronic Parking Brake apply failed.
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Electronic Parking Brake faulted during apply && (nonterminal == TRUE) && (stateRequest != ESM_DYNAMIC)
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Electronic Parking Brake may not be applied, and caliper may be obstructed
|
No
|
|
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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
|
Problem with initializing Electronic Parking Brake
|
No
|
|
|
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
|
No
|
|
|
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
|
No
|
|
|
Electronic Parking Brake release was interrupted. Release will be retried.
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(unitFaultStatus == FAULT_STATUS_RETRY) && (csmRequest == release)
|
Electronic Parking Brake did not release, it will retry a release and enter fault if retry fails
|
No
|
|
|
Electronic Parking Brake was unable to release fully.
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Electronic Parking Brake faulted during release && (nonterminal == TRUE)
|
Electronic Parking Brake may not be released, and caliper may be obstructed
|
No
|
|
|
Electronic Parking Brake apply failed.
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Electronic Parking Brake faulted during apply && (nonterminal == TRUE) && (stateRequest != ESM_DYNAMIC)
|
Electronic Parking Brake may not be applied, and caliper may be obstructed
|
No
|
|
|
Electronic Parking Brake was attempting to dynamic park, Controlled Deceleration for Parking Brake is unavailable, and speed crossed above 8.8kph
|
EPB_unitStatus == EPB_STATUS_DYNAMIC_PARKING, and speed crosses above 8.8kph or acceleration is above 5mph/s
|
Car interrupted parking due to travelling at speed, Electronic Parking Brake not applied
|
No
|
|
|
Electronic Parking Brake is performing dynamic apply
|
ESM_stateRequest == ESM_DYNAMIC
|
Unable to perform Controlled Deceleration for Parking Brake due to Stability Control failing or unavailable
|
No
|
|
|
Stability Control has begun Controlled Deceleration for Parking Brake
|
ESM_state == ESM_DYNAMIC_EXTERNAL
|
Stability Control is actuating, Electronic Parking Brake may be idle faulted
|
No
|
|
|
Non-nominal termination of dynamic park
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ESM_stateRequest transitions from ESM_DYNAMIC_PARK to any other state, while qualified speed > 0.8kph
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Electronic Parking Brake not applied, car may be free rolling, Stability Control may have failed or is unavailable
|
No
|
|
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One Electronic Parking Brake (EPB) not applied, and road grade is too steep to secure vehicle 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
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Car may not be secured by Electronic Parking Brake on current road grade, may be free rolling
|
No
|
|
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Road grade is too steep to secure with Park Brake
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Attempt to engage parking brake when the vehicle is stopped on too steep a road grade for Electronic Parking Brake to secure the vehicle
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Car may not be secured by Electronic Parking Brake on the current road grade, may be free rolling
|
No
|
|
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Customer facing alert issued when Electronic Parking Brake is applied at higher than 5mph
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Entry to states ESM_DYNAMIC, ESM_DYNAMIC_EXTERNAL, ESM_DYNAMIC_PENDING
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User facing notification that informs Electronic Parking Brake is dynamically applying
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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.
|
No
|
|
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Electronic Parking Brake was not able to determine caliper state on boot.
|
Caliper state saved is unknown, corrupted, or mismatches Electronic Parking Brake Monitor
|
Problem with initializing Electronic Parking Brake
|
No
|