Alerts
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| Signal Name | Description | Condition | Impact | Important |
|---|---|---|---|---|
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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
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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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EPB is commanding the brakes to bring the vehicle to a stop
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A critical ECU commands actice decel or vehicle is limp for 5 mins
|
Vehicle will decelerate
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No
|
|
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Motor negative lead voltage is higher than expected while active
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The negative lead voltage measurement is higher than expected. This could be higher than 0.1 voltages if motor is driven in apply direction, or higher than estimated PWM voltage if driven in the release direction.
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Caliper motor or harness may be damaged
|
No
|
|
|
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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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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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
|
No
|
|
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EPB releases no-load is measured using derivative of current. Currently in ghosted alert.
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No-load current suggested the EPB was not in no-load causing release to continue.
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EPB may not released far enough causing drag on rotor.
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No
|
|
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The low voltage (LV) battery is discharging, even though high voltage (HV) system support has been requested. Vehicle loadshedding will occur, and a separate alert will be present to indicate that condition.
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LV battery is being discharged, even though the HV system should be supporting both the LV battery and the LV bus.
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Vehicle loadshedding is triggered, and a separate alert will be present to indicate that condition and its impacts.
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No
|
|
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The Emergency Notification Signal (ENS) harness may be disconnected or the Restraints Control Module (RCM) may be missing (MIA).
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Emergency Notification Signal (ENS) period is not within 10% of 0.001 or 0.1 seconds, and duty cycle is not between 60% and 40%.
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Loss of redundancy on high voltage disconnection signal.
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No
|
|
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The vehicle controller is loadshedding due to a vehicle collision. Make sure the vehicle is safe to re-energize before using the Clear Post-Crash Loadshedding (PROC_VCFRONT_X_CLEAR-POST-CRASH-LOADSHEDDING) routine to resume all low voltage electrical system features and enable high voltage system again.
|
Vehicle collision is detected.
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High voltage system is unavailable. Low voltage electrical system features are limited to conserve energy for essential functions.
|
No
|
|
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The LV system power or protection are compromised, driving is not recommended
|
The LV system power or protection are compromised
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Driving is not recommended when LV system is not healthy
|
No
|
|
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Motor negative lead voltage is lower than expected while active
|
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
|
No
|
|
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An internal condition affecting right headlamp functionality has been detected - certain light functions or the headlamp fan may be degraded or disabled
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The pixel matrix manager detects non-functional pixels or has communication issues, or the voltage measured across the boost rail, Lowbeam Flat, Ambient, DRL or Turn LEDs is out of range, or the LED drivers in the ECU have reported status flags, or certain values programmed in the matrix manager EEPROM are out of range, or the fan current or side marker current is out of range.
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Some headlight functions may be unavailable or may not function as expected. Headlight functionality may return after vehicle sleep.
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No
|
|
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A condition affecting left front turn signal functionality has been detected - the left front turn signal may be degraded or disabled, and remaining left side turn signals will fast blink
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The headlamp ECU is MIA on LIN (not responding to Local Interconnect Network traffic) while powered on, or an internal condition with the turn signal LEDs or the headlamp ECU's LED driver is detected.
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Left side turn signals will fast blink
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No
|
|
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The low voltage (LV) battery type detected on startup does not match the LV battery type reported by the vehicle gateway (GTW) configuration.
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The LV battery type detected on startup does not match the LV battery type reported by the GTW configuration.
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LV battery performance may be limited. LV battery support for vehicle electrical systems may be limited or unavailable.
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No
|
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A condition affecting left low beam (dipped beam) or high beam (main beam) functionality has been detected - the left low beam or high beam may be degraded or disabled.
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An internal condition affecting the low beam (dipped beam) or high beam (main beam) LEDs, pixels, or the headlamp ECU's LED drivers is detected.
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Left low beam (dipped beam) or high beam (main beam) may be partially or fully disabled.
|
No
|
|
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The Left Headlight Control Module (HCML) detects an internal condition affecting the functionality of the left headlight, which is reported to the front vehicle controller (VCFRONT).
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The pixel matrix manager detects non-functional pixels or has communication issues, or the voltage measured across the boost rail, Lowbeam, DRL, Side Marker, or Turn LEDs is out of range, or the LED drivers in the ECU have reported status flags, or certain values programmed in the matrix manager EEPROM are out of range.
|
Some headlight functions may be unavailable or may not function as expected. Headlight functionality may return after vehicle sleep.
|
No
|
|
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Motor positive lead voltage is higher than expected while active
|
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
|
No
|
|
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A condition affecting right daytime running light (DRL) functionality has been detected - the right daytime running light may be degraded or disabled
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An internal condition with the daytime running light (DRL) LEDs or the headlamp ECU's LED driver is detected.
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Right daytime running light (DRL) may be partially or fully disabled
|
No
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