Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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Vehicle attempted a power state transition which the Electronic Parking Brake did not agree with.
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VCFRONT and EPB vehicle power states are not the same
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A controller may be stuck in the wrong power state. Could block sleep or other functions
|
No
|
|
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The Electronic Parking Brake (EPB) enabled Winch Mode but did not receive the expected messages from the steering system.
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Winch Mode is enabled, but the EPB did not receive the expected messages from the steering system.
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Steering performance may be reduced or steering may be unavailable until Winch Mode is disabled.
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No
|
|
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Electronic Parking Brake has detected a vehicle speed condition that caused it to exit winch mode.
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While in winch mode, Electronic Parking Brake detects a speed class of fast or unknown.
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Vehicle exits winch mode and applies parking brakes.
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No
|
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Electronic Parking Brake apply was interrupted during dynamic apply. Apply failed.
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Electronic Parking Brake faulted while applying and during ESM_DYNAMIC
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Electronic Parking Brake could not be applied, car may be free rolling
|
No
|
|
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Electronic Parking Brake apply failed due to idle fault
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Electronic Parking Brake is idle faulted & apply requested
|
Caliper is disconnected and fails to apply
|
No
|
|
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User facing to warn that Electronic Parking Brake is in service mode and many Electronic Parking Brake features are disabled
|
EPB_unitStatus == SERVICE or SERVICE_RELEASING.
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Electronic Parking Brake will not automatically apply.
|
No
|
|
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Non user facing alert set for service set when winch mode is active
|
Enter ESM_WINCHMODE
|
Electronic Parking Brake will be released
|
No
|
|
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Brake Disc Wipe algorithm is not running due to loss of input signal(s)
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One or more of the BDW algorithms input signals is unavailable.
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BDW attempted while car not in drive or input signals are being delayed
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No
|
|
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Stability Control has begun Controlled Deceleration for Parking Brake
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ESM_state == ESM_DYNAMIC_EXTERNAL
|
Stability Control is actuating, Electronic Parking Brake may be idle faulted
|
No
|
|
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Electronic Parking Brake's learned configuration does not match the reported config from the gateway
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Electronic Parking Brake HW type does not match HW type reported by gateway and 5 seconds have passed since gateway booted up
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Hardware does not match current configuration, parking brake function may be degraded
|
No
|
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DI requested unpark but PM didn't allow it
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DI requests unpark and PM doesn't allow it within 40ms or is MIA
|
Fault or error occurred on the DI
|
No
|
|
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If vehicle reaches 8.8kph, EPB will park
|
Vehicle speed of 8.8kph in free roll Mode
|
EPB is applied.
|
No
|
|
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The Electronic Parking Brake and Electronic Parking Brake Monitor took longer than expected to save caliper state in non-volatile memory.
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Caliper state saved to Electronic Parking Brake and Electronic Parking Brake Monitor mismatched
|
Non-volatile memory error due to Electronic Parking Brake and Electronic Parking Brake Monitor mismatch
|
No
|
|
|
Electronic Parking Brake apply was interrupted during dynamic apply. Apply will be retried.
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(unitFaultStatus == FAULT_STATUS_RETRY) && (stateRequest == ESM_DYNAMIC)
|
Electronic Parking Brake did not apply, it will retry applying and enter fault if retry fails
|
No
|
|
|
EPAS_w002_steeringReduced
|
|
-
|
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.
|
No
|
|
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Warns if the processor has experienced a reset due to power loss.
|
Sudden power loss.
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Controller is MIA for some time.
|
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.
|
No
|
|
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The 0 drive offset current captured as calibration was higher than expected.
|
The calibration offset current measured when motor is not being driven was higher than 3.0 amps
|
Caliper, Electronic Parking Brake controller, or harness could be damaged. Components may be damaged by high temperatures
|
No
|
|
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One or more of the expected messages the electronic control unit (ECU) receives periodically from the high voltage processor (HVP) ECU is not received, indicating the HVP may be unavailable (MIA).
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One or more of the expected messages from the HVP ECU is not received.
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Vehicle may be unable to drive. Charging may be limited or unavailable.
|
No
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