Alerts
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| Signal Name | Description | Condition | Impact |
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Electronic Parking Brake not sure if it is a left or a right.
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Electronic Parking Brake could not read genealogy when starting.
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Electronic Parking Brake and vehicle power functions will be severely degraded.
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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
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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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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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Electronic Parking Brake noticed very noisy current.
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At <-10C noisy motor current for more than 1s during inrush or anytime during no-load
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Diagnostic alert for noisy current while Electronic Parking Brake is active
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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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Electronic Parking Brake release failed due to idle fault.
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Electronic Parking Brake is idle faulted & release requested
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Caliper is disconnected and fails to release
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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
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Electronic Parking Brake apply was interrupted during dynamic apply. Apply will be retried.
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(unitFaultStatus == FAULT_STATUS_RETRY) && (stateRequest == ESM_DYNAMIC)
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Electronic Parking Brake did not apply, it will retry applying and enter fault if retry fails
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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
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Caliper is disconnected and fails to apply
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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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Non user facing alert set for service set when winch mode is active.
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Enter ESM_WINCHMODE
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Electronic Parking Brake will be released
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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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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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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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Stability Control has begun Controlled Deceleration for Parking Brake.
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ESM_state == ESM_DYNAMIC_EXTERNAL
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Stability Control is actuating, Electronic Parking Brake may be idle faulted
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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
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EPB's brake HW config is not compatible remote EPB's brake HW config.
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Remote EPB is present and local EPB has learnt brake HW config but is not compatible with remote brake HW config
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Remote and local EPB brake HW config is incompatible, parking brake function may be degraded
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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
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Fault or error occurred on the DI
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If vehicle reaches 8.8kph, EPB will park.
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Vehicle speed of 8.8kph in free roll Mode
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EPB is applied.
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