Alerts
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| Signal Name | Description | Condition | Impact |
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The vehicle controller(s) controlling the headlamps have commanded the headlights to adjust to a beam pattern that is optimized for left-hand traffic as the vehicle is now located in a region with left-hand traffic.
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The vehicle is now located in a region with left-hand traffic, meaning vehicles are being driven on the left side of the road.
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Headlight illumination will be optimized for regions with left-hand traffic.
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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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The front vehicle controller (VCFRONT) detects a power draw higher than expected from the right vehicle controller (VCRIGHT), causing the VCFRONT to power off the VCRIGHT.
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The observed power draw on the VCRIGHT is outside of the defined operating threshold for too long.
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Vehicle may be unable to drive and may start to power down. Vehicle functions that depend on the VCRIGHT (such as right side windows, doors, and/or seat functions) may be unavailable or their performance may be affected.
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Charge Port door open request not honored because brake is pressed.
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The UI requests charge port door open while the customer has brake pedal pressed.
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The vehicle will not allow the charge port door to open.
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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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The Low Voltage Battery Management System (LVBMS) detects high temperature at the low voltage (LV) battery MOSFET (internal protection transistor).
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The LVBMS MOSFET temperature has reached 100 deg C for 1 second.
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The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.
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The vehicle controller detects a refrigerant condition, such as low refrigerant or a blocked refrigerator filter, which may prevent the A/C compressor from operating as expected due to high suction superheat if no other heat pump modes are available.
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The vehicle controller detects low refrigerant, a blocked refrigerant filter, or other refrigerant related conditions on the A/C compressor.
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Cabin climate control system air conditioning and heating may be limited or unavailable. Battery heating and cooling performance may be limited.
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The low voltage battery management system (LVBMS) reports the low voltage (LV) battery's internal protection transistor (MOSFET) has opened and it is not recoverable by any device
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The LVBMS reports to the vehicle controller that the LV battery is not recoverable due to any of the following conditions: depleted LV battery state of charge (SoC) due to deep discharge; one or more cell voltage(s) at less than its threshold; the sum of all cell voltages is less than its threshold.
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The LV battery is not recoverable by any device.
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Right headlamp powered off due to a short circuit detected on the right headlamp power rail
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The headlamp current is above 9A for greater than 10s
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All right headlamp lighting functions (low beam, high beam, turn signal, etc) may be degraded or unavailable
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The low voltage battery management system (LVBMS) reports the low voltage (LV) battery has a reduced state of charge (SOC), which may lead to the LVBMS opening the LV battery internal protection transistor (MOSFET).
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The LVBMS detects the LV battery SOC is below 15% for 5 seconds.
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The LV battery may be unable to support vehicle electrical systems.
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The Low Voltage Battery Management System (LVBMS) detects that the low voltage (LV) battery pack is experiencing high temperatures.
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The LVBMS module temperature has reached 60 deg C for 1 second.
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The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.
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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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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.
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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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The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance and is attempting to rebalance the cell voltages. The vehicle will be kept awake to support the LV battery until the rebalancing attempt is complete.
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The LVBMS detects that all LV battery cell voltages are not within 100mV of each other.
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The LV battery may suddenly become unavailable and unable to support vehicle electrical systems. The LV battery may require replacement, and a separate alert should be present to indicate this condition if applicable.
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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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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
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Non-volatile memory error due to Electronic Parking Brake and Electronic Parking Brake Monitor mismatch
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The Electronic Parking Brake made an unexpected state transition.
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Electronic Parking Brake moved between states that are not marked as having a valid transition.
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Logical bug in the software
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Recovery limp mode activated based on user acknowledgment of possible shutdown and limited drive torque / functionality.
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User acknowledges limited drive torque and possible shutdown, after steering system has been detected as partially compromised and vehicle has been brought to a stop, and shifts out of Park.
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Vehicle speed limited to less than 5 mph. Brakes eventually applied automatically to bring vehicle to a stop.
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The vehicle controller has disabled communications over the bus that connects to the low voltage (LV) battery after detecting a condition (or conditions) that may cause the LV battery to become overdischarged. To avoid overdischarge that could make the LV battery unrecoverable, do not restore communications until the LV system is fully supported by the Power Conversion System (PCS).
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The vehicle controller detects the LV battery may become overdischarged unless it sleeps, and also determines vehicle conditions are OK to disable LV battery communications.
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The vehicle controller will have less information about the LV battery until it is serviced. Headlamps and windshield wipers may be unavailable, or may not function as expected.
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The low voltage (LV) battery type detected on startup is unknown. This usually happens the first time a controller is powered on, or after non-volatile memory (NVM) corruption, which will be indicated by another alert.
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The LV battery type detected on startup is unknown.
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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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