MyTeslaMate App

Signal Name	Description	Condition	Impact
VCFRONT_a292_sideMarkerLightPipeFault	A condition has been detected that may affect the left and right side markers (amber lights in front fascia, only in applicable regions) and auxiliary park lights (white light pipes in front fascia, all regions).	The high side driver (HSD) for the left and right side markers and auxiliary park lights reports that an undercurrent or short circuit condition is present.	The left and right side markers and/or auxiliary park lights may not function as expected.
VCFRONT_a293_interiorFrunkLightFault	The vehicle controller detects a condition affecting the interior front trunk (or frunk) light.	The vehicle controller detects that the interior frunk light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).	The interior frunk light may not produce light or may not function as expected.
VCFRONT_a291_rightFogLightFault	The vehicle controller detects a condition affecting the front right fog light.	The vehicle controller detects that the front right fog light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).	The front right fog light may not produce light or may not function as expected.
VCFRONT_a294_leftSideRepeaterLightFault	The vehicle controller detects a condition affecting the left side repeater light.	The vehicle controller detects that the left side repeater light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).	When the left turn indicator is on, the left side repeater light may blink at double the normal speed, may not produce light, and/or may not function as expected.
VCFRONT_a309_frunkEmergencyReleasePressed	The front vehicle controller (VCFRONT) detects the front trunk (also known as the frunk) emergency release button was pressed while the frunk was closed.	The frunk emergency release is pressed while the frunk is closed.	If the vehicle is stationary, the frunk will open. If the vehicle is in motion, the frunk will release to the ajar (or secondary) position.
VCFRONT_a295_rightSideRepeaterLightFault	The vehicle controller detects a condition affecting the right side repeater light.	The vehicle controller detects that the right side repeater light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).	When the right turn indicator is on, the right side repeater light may blink at double the normal speed, may not produce light, and/or may not function as expected.
VCFRONT_a290_leftFogLightFault	The vehicle controller detects a condition affecting the front left fog light.	The vehicle controller detects that the front left fog light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).	The front left fog light may not produce light or may not function as expected.
VCFRONT_a269_drveBlckdVltgeTooLow2	The vehicle cannot enter Drive state because the measured LV battery voltage is too low. This alert is intended to capture the LV battery conditions when drive blocking is activated and assist with diagnosis if primary alert drveBlckdVltgeTooLow cannot be logged by the vehicle Gateway (GTW) at time of initial occurrence due to LV undervoltage condition.	The measured LV battery voltage dropped below the level required for the drive state for 0.5 seconds, and vehicle GTW is reported as available for logging.	While this alert is primarily informational and intended for logging purposes, the vehicle may be unable to drive, or may take longer than expected to enter Drive state.
VCFRONT_a270_prechargeFailed	The Front Vehicle Controller (VCFRONT) sleep bypass did not raise the voltage to the target voltage in the expected amount of time.	The load voltage does not meet the power source voltage in the expected amount of time.	The load being precharged may not turn on. Vehicle functions relying on the load being precharged may not operate as expected.
VCFRONT_a271_LVBatteryPermSupported	After a Low Voltage (LV) Battery condition was identified that may prevent precharging the High Voltage (HV) Bus, the HV Bus successfully energized and will support the LV System to enable drive. The vehicle controller requests to keep the HV bus energized until the LV battery is replaced.	The failureToPrechargeRisk alert is set, and the HV Bus is energized.	The HV System will remain on to support vehicle functions, including drive, and the HV contactors will remain closed.
VCFRONT_a268_vbatFusedVoltageMismatch	The front vehicle controller (VCFRONT) detects there is voltage mismatch greater than 0.5V between the input voltage to the VCFRONT printed circuit board assembly (PCBA) and the internally fused VCFRONT low voltage (LV) Battery Power (VBAT Fused) circuit (or eFuse) output voltage.	The voltage mismatch is greater than 0.5V between the VCFRONT PCBA input voltage and the eFuse output voltage.	Vehicle functions that rely on the VCFRONT may be limited or may not function as expected.
VCFRONT_a278_TLVBMS_BmbHwOverCurrentFault	A Battery Monitoring Board (BMB) device detects a Hardware (HW) over current condition.	The BMB device detects an over current condition.	The eFuse may open, causing a loss of LV battery pack power and limiting LV battery support for vehicle electrical system.
VCFRONT_a326_vcleftSlowTripOC	The left vehicle controller eFuse current average current value over the last second was > 90A.	90A average eFuse current within last second.	The eFuse may have tripped.
VCFRONT_a281_alcoholInterlockBlockingDrive	Drive blocked by alcohol ignition interlock device.	A brake pedal press is detected when the vehicle is in Park (P) and the alcohol ignition interlock device has not yet allowed drive based on a successful alcohol test result.	The vehicle is unable to drive.
VCFRONT_a327_vcrightSlowTripOC	The right vehicle controller eFuse current average current value over the last second was > 90A.	90A average eFuse current within last second.	The eFuse may have tripped.
VCFRONT_a267_EPAS3sVoltageMismatch	The front vehicle controller (VCFRONT) detects there is voltage mismatch greater than 0.5V between the input power to the VCFRONT and the secondary power steering circuit for the secondary Electronic Power Assisted Steering (EPAS3S) electronic control unit (ECU).	The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.	Power steering may be limited or unavailable.
VCFRONT_a264_iBoosterVoltageMismatch	The front vehicle controller (VCFRONT) detects there is voltage mismatch greater than 0.5V between the input power to the VCFRONT and the braking assist circuit for the iBooster (IBST) electronic control unit (ECU).	The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.	Vehicle functions that rely on the iBooster may be limited or may not function as expected.
VCFRONT_a265_ESPVoltageMismatch	The vehicle controller detects there is voltage mismatch greater than 0.5V between the input power to the front vehicle controller (VCFRONT) and the stability controller circuit for the Electronic Stability Program (ESP) electronic control unit (ECU).	The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.	Vehicle functions that rely on the ESP may be limited or may not function as expected.
VCFRONT_a260_deadLVBattery	The vehicle controller detects the the low voltage (LV) battery may be overdischarged and no longer functional. This may indicate the LV battery has been damaged due to deep discharge, or it may indicate the LV battery voltage has dropped below the minimum limit for maintaining functionality.	The vehicle controller detects LV battery voltage or LV battery Amp hour (Ah) budget are below their limits for 5 seconds.	The LV battery may be unable to hold adequate electrical charge to remain functional. Replacement may be necessary, with a separate alert present to indicate that condition if applicable.
VCFRONT_a257_portExpanderVOR	The front vehicle controller (VCFRONT) has detected a condition affecting a group of eFuses, making an eFuse system reset necessary.	VCFRONT detects a group of eFuses with a common power source have all tripped (circuit opened).	Vehicle may be unable to drive.

VCFRONT_a292_sideMarkerLightPipeFault

A condition has been detected that may affect the left and right side markers (amber lights in front fascia, only in applicable regions) and auxiliary park lights (white light pipes in front fascia, all regions).

The high side driver (HSD) for the left and right side markers and auxiliary park lights reports that an undercurrent or short circuit condition is present.

The left and right side markers and/or auxiliary park lights may not function as expected.

VCFRONT_a293_interiorFrunkLightFault

The vehicle controller detects a condition affecting the interior front trunk (or frunk) light.

The vehicle controller detects that the interior frunk light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).

The interior frunk light may not produce light or may not function as expected.

VCFRONT_a291_rightFogLightFault

The vehicle controller detects a condition affecting the front right fog light.

The vehicle controller detects that the front right fog light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).

The front right fog light may not produce light or may not function as expected.

VCFRONT_a294_leftSideRepeaterLightFault

The vehicle controller detects a condition affecting the left side repeater light.

The vehicle controller detects that the left side repeater light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).

When the left turn indicator is on, the left side repeater light may blink at double the normal speed, may not produce light, and/or may not function as expected.

VCFRONT_a309_frunkEmergencyReleasePressed

The front vehicle controller (VCFRONT) detects the front trunk (also known as the frunk) emergency release button was pressed while the frunk was closed.

The frunk emergency release is pressed while the frunk is closed.

If the vehicle is stationary, the frunk will open. If the vehicle is in motion, the frunk will release to the ajar (or secondary) position.

VCFRONT_a295_rightSideRepeaterLightFault

The vehicle controller detects a condition affecting the right side repeater light.

The vehicle controller detects that the right side repeater light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).

When the right turn indicator is on, the right side repeater light may blink at double the normal speed, may not produce light, and/or may not function as expected.

VCFRONT_a290_leftFogLightFault

The vehicle controller detects a condition affecting the front left fog light.

The vehicle controller detects that the front left fog light high side driver (HSD) reports one of the following: (1) a current draw below the minimum threshold (open circuit); (2) a current draw above the maximum threshold (short circuit).

The front left fog light may not produce light or may not function as expected.

VCFRONT_a269_drveBlckdVltgeTooLow2

The vehicle cannot enter Drive state because the measured LV battery voltage is too low. This alert is intended to capture the LV battery conditions when drive blocking is activated and assist with diagnosis if primary alert drveBlckdVltgeTooLow cannot be logged by the vehicle Gateway (GTW) at time of initial occurrence due to LV undervoltage condition.

The measured LV battery voltage dropped below the level required for the drive state for 0.5 seconds, and vehicle GTW is reported as available for logging.

While this alert is primarily informational and intended for logging purposes, the vehicle may be unable to drive, or may take longer than expected to enter Drive state.

VCFRONT_a270_prechargeFailed

The Front Vehicle Controller (VCFRONT) sleep bypass did not raise the voltage to the target voltage in the expected amount of time.

The load voltage does not meet the power source voltage in the expected amount of time.

The load being precharged may not turn on. Vehicle functions relying on the load being precharged may not operate as expected.

VCFRONT_a271_LVBatteryPermSupported

After a Low Voltage (LV) Battery condition was identified that may prevent precharging the High Voltage (HV) Bus, the HV Bus successfully energized and will support the LV System to enable drive. The vehicle controller requests to keep the HV bus energized until the LV battery is replaced.

The failureToPrechargeRisk alert is set, and the HV Bus is energized.

The HV System will remain on to support vehicle functions, including drive, and the HV contactors will remain closed.

VCFRONT_a268_vbatFusedVoltageMismatch

The front vehicle controller (VCFRONT) detects there is voltage mismatch greater than 0.5V between the input voltage to the VCFRONT printed circuit board assembly (PCBA) and the internally fused VCFRONT low voltage (LV) Battery Power (VBAT Fused) circuit (or eFuse) output voltage.

The voltage mismatch is greater than 0.5V between the VCFRONT PCBA input voltage and the eFuse output voltage.

Vehicle functions that rely on the VCFRONT may be limited or may not function as expected.

VCFRONT_a278_TLVBMS_BmbHwOverCurrentFault

A Battery Monitoring Board (BMB) device detects a Hardware (HW) over current condition.

The BMB device detects an over current condition.

The eFuse may open, causing a loss of LV battery pack power and limiting LV battery support for vehicle electrical system.

VCFRONT_a326_vcleftSlowTripOC

The left vehicle controller eFuse current average current value over the last second was > 90A.

90A average eFuse current within last second.

The eFuse may have tripped.

VCFRONT_a281_alcoholInterlockBlockingDrive

Drive blocked by alcohol ignition interlock device.

A brake pedal press is detected when the vehicle is in Park (P) and the alcohol ignition interlock device has not yet allowed drive based on a successful alcohol test result.

The vehicle is unable to drive.

VCFRONT_a327_vcrightSlowTripOC

The right vehicle controller eFuse current average current value over the last second was > 90A.

90A average eFuse current within last second.

The eFuse may have tripped.

VCFRONT_a267_EPAS3sVoltageMismatch

The front vehicle controller (VCFRONT) detects there is voltage mismatch greater than 0.5V between the input power to the VCFRONT and the secondary power steering circuit for the secondary Electronic Power Assisted Steering (EPAS3S) electronic control unit (ECU).

The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.

Power steering may be limited or unavailable.

VCFRONT_a264_iBoosterVoltageMismatch

The front vehicle controller (VCFRONT) detects there is voltage mismatch greater than 0.5V between the input power to the VCFRONT and the braking assist circuit for the iBooster (IBST) electronic control unit (ECU).

The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.

Vehicle functions that rely on the iBooster may be limited or may not function as expected.

VCFRONT_a265_ESPVoltageMismatch

The vehicle controller detects there is voltage mismatch greater than 0.5V between the input power to the front vehicle controller (VCFRONT) and the stability controller circuit for the Electronic Stability Program (ESP) electronic control unit (ECU).

The voltage mismatch is greater than 0.5V between the VCFRONT printed circuit board assembly (PCBA) input voltage and the eFuse output voltage.

Vehicle functions that rely on the ESP may be limited or may not function as expected.

VCFRONT_a260_deadLVBattery

The vehicle controller detects the the low voltage (LV) battery may be overdischarged and no longer functional. This may indicate the LV battery has been damaged due to deep discharge, or it may indicate the LV battery voltage has dropped below the minimum limit for maintaining functionality.

The vehicle controller detects LV battery voltage or LV battery Amp hour (Ah) budget are below their limits for 5 seconds.

The LV battery may be unable to hold adequate electrical charge to remain functional. Replacement may be necessary, with a separate alert present to indicate that condition if applicable.

VCFRONT_a257_portExpanderVOR

The front vehicle controller (VCFRONT) has detected a condition affecting a group of eFuses, making an eFuse system reset necessary.

VCFRONT detects a group of eFuses with a common power source have all tripped (circuit opened).

Vehicle may be unable to drive.

Alerts

Alerts