Alerts
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| Signal Name | Description | Condition | Impact |
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A Low Voltage (LV) battery pack brick voltage is above the over voltage limit for an extended time period.
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A battery pack brick voltage is greater than the over voltage limit for an extended time period.
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Vehicle may be unable to drive.
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Difference between the discharge pressure and liquid pressure (Pd-Pl) increased. Discharge lines or Liquid Cooled Condenser (LCC) or Shut Off Valve (SOV) may be blocked.
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Pd-Pl is greater than 6 bar for 5 consecutive seconds.
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Thermal performance is degraded.
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Frunk interior emergency release button press has been detected, but the frunk was not opened because vehicle was in motion.
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Frunk emergency interior release button press detected while the vehicle is in motion.
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Possible occupant or object inside the frunk pressing the interior release button.
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The vehicle controller detects the actual A/C compressor power is lower than expected.
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The A/C compressor power index is lower than expected.
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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 front vehicle controller (VCFRONT) detects the three-way valve has encountered a condition preventing it from performing as designed.
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The three-way valve encounters a condition preventing it from performing as designed. Alert log signal data should provide more information on the specific condition(s) detected.
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Vehicle functions that rely on the three-way valve may be limited or unavailable.
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The vehicle controller detects a discrepancy in the estimated refrigerant flow rates between the A/C compressor and recirculation electronic expansion valve (EXV) as the estimated refrigerant flow index is higher than expected while the subcool is high.
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The estimated refrigerant flow index is above the expected level, and the subcool is high.
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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 flow index value is low at high subcool. The refrigerant flow rate through the electronic expansion valves (EXV) is not meeting the expected value when compared to the compressor refrigerant flow rate.
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The vehicle detects that refrigerant flow index is below expected levels and subcool is high.
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The thermal system may not perform as expected.
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The vehicle controller detects the front trunk (also known as the frunk) sensor requires service as a condition affecting functionality has been detected on one or more of the frunk latch switches.
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May set due to any of the following: (1) one of the switches is pressed while the other is not pressed; (2) one or more of the frunk latch switches on the frunk sensor are shorted, disconnected, or in an indeterminate voltage range.
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The frunk may not function as expected. For example, the user interface (UI) on the center display may show the frunk as open when it is actually closed.
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The vehicle controller detects a discrepancy in the estimated refrigerant flow rates between the A/C compressor and recirculation electronic expansion valve (EXV) as the estimated refrigerant flow index is higher than expected while the subcool is low.
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The estimated refrigerant flow index is above the expected level, and the subcool is low.
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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 front vehicle controller (VCFRONT) detects the power conversion system (PCS) eFuse has exceeded 133 degrees C. The PCS eFuse circuit may open (trip) if low voltage (LV) electrical system loads are not reduced to 175A or less. VCFRONT is shedding some vehicle electrical loads by cutting power to less essential electronic control units (ECUs).
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The PCS eFuse temperature is detected as greater than 133 degrees C for 500 milliseconds.
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Some convenience features will be unavailable as VCFRONT limits LV electrical system current draw by cutting power to some electronic control units (ECUs).
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The low voltage battery management system (LVBMS) reports a condition affecting the low voltage (LV) battery or the ability of the LVBMS to manage the LV battery. May result in LV battery damage or loss of LV battery support for vehicle electrical systems.
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The LVBMS detects a condition affecting its ability to manage the LV battery. Alert log signal data should provide more information.
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Lack of LVBMS functionality may result in LV battery damage or degradation, and may also result in loss of LV battery support for vehicle electrical systems.
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There is an unexpected condition affecting a VNF1048 chip.
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The VNF1048 chip reports a condition affecting its operation.
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Affected eFuse may not be on.
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The eFuse application-specific integrated circuit (ASIC) on the vehicle controller is in an unexpected state.
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Vehicle controller eFuse ASIC is not in the requested state
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Vehicle Controller eFuse ASIC may not turn on or off as expected
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The front vehicle controller (VCFRONT) detects the front Oil Pump Controller (OPC) eFuse circuit has tripped (circuit opened), interrupting power supply to the front OPC. Powertrain performance may be limited.
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The VCFRONT detects the eFuse circuit gating low voltage (LV) power feed to the front OPC as open (tripped).
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Powertrain performance may be limited.
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The vehicle controller detects the isentropic check for the refrigerant discharge temperature (TD) is unsuccessful, indicating the A/C compressor mass flow rate is below the expected level.
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The isentropic check for the TD is unsuccessful.
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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 front vehicle controller (VCFRONT) detects there is voltage mismatch greater than 0.5V between the input power to the VCFRONT and front drive inverter (DIF) circuit.
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The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.
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Vehicle speed and power may be limited.
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The vehicle controller detects that the Thermal Fill Drain service routine is being run while the vehicle is in Drive.
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The Thermal Fill Drain service routine is run.
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Cabin climate control system air conditioning and heating may be limited or unavailable. Powertrain performance may be limited.
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The front vehicle controller (VCFRONT) detects a power draw higher than expected from the left or right vehicle controller (VCLEFT / VCRIGHT) while in DRIVE or during a DC charging session.
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There is a sudden high power draw being observed on the VCLEFT or VCRIGHT that is outside of the defined operating threshold.
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Vehicle may be unable to drive and may start to power down after exiting DRIVE or after the DC charging session is complete.
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The brushless motor has a condition affecting its functionality.
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The Battery Pump motor controller detected an error
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The Battery Pump will not be able to run. The integrated circuit will clear the condition when the condition is no longer present
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The low voltage (LV) battery has reached its voltage floor before it has reached its Amp hour (Ah) budget. May indicate the LV battery has low charge capacity.
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The measured LV battery voltage has reached its floor before its Amp hour budget floor.
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The LV battery may have low discharge capacity, limiting its ability to support the vehicle's low voltage electrical system.
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