MyTeslaMate App

Signal Name	Description	Condition	Impact
VCLEFTS_a465_hvacLateralVaneUncalib	HVAC lateral vane actuator is uncalibrated.	The lateral vane actuator is not calibrated	The airwave control may be disabled
VCLEFTP_a133_TAS_PWMopenM	Mid height sensor disconnected, or signal line from mid Pulse Width Modulation (PWM) height sensor floating.	Mid height sensor disconnected, or signal line from mid PWM height sensor floating.	Air suspension leveling will be disabled. Systems with adaptive dampers will disable active damping control.
VCLEFTS_a088_SAS_MIA	One of more of the expected CAN messages from SAS (Steering Angle Sensor) were not received.	A message the local ECU expects to receive from the SAS (Steering Angle Sensor) ECU hasn't been received within the expected timeout or the drop rate is too high while the SAS is CAN active. The ECU is considered CAN active when VCLEFTS_vehGoToSleep is 0 AND VCLEFTS_vehiclePowerState is VEHICLE_POWER_STATE_DRIVE.	Automatic turn signal cancelling may be degraded.
VCLEFTS_a152_refrigSuctTempSns	The refrigerant suction temperature sensor has an electrical fault (disconnect, short, or internal). HVAC cabin cooling (air conditioning) and powertrain performance may be limited.	The sensor reads a power rail or ground reference voltage.	HVAC cabin cooling (air conditioning) and powertrain performance may be limited.
VCLEFTS_a240_pumpPwtPTICLatchFault	The motor has detected an electrical fault (short, disconnect, or internal). Powertrain performance may be limited.	The LV8907 integrated circuit has detected a fault that requires a stop.	The pump will not run. Powertrain performance may be limited. The circuit will be reset to attempt to clear the fault.
VCFRONT_a620_pumpAirLock	The front vehicle controller (VCFRONT) controller detects an air lock in the pump due to smaller than expected pump current values.	The pump current is below the minimum threshold value for more than 20 seconds.	Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.
VCFRONT_a623_LVUnhealthy	The LV system power or protection are compromised, driving is not recommended.	The LV system power or protection are compromised	Driving is not recommended when LV system is not healthy
VCFRONT_a616_VCSEAT2L_MIA	One or more of the messages the vehicle controller receives periodically from the left second row seat controller (VCSEAT2L) is not received, indicating the VCSEAT2L may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the VCSEAT2L within the expected time frame.	Vehicle functions that depend on the VCSEAT2L may be unavailable or may not function as expected.
VCFRONT_a624_rightHeadlampInternalErrorV4	The front vehicle controller (VCFRONT) detects a condition affecting the functionality of the right headlight.	The voltage measured across the boost rail, high beam, low beam, 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 headlamp EEPROM are out of range.	Some headlight functions may be unavailable or may not function as expected. Headlight functionality may return after vehicle sleep.
VCFRONT_a617_VCSEAT2R_MIA	One or more of the messages the vehicle controller receives periodically from the right second row seat controller (VCSEAT2R) is not received, indicating the VCSEAT2R may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the VCSEAT2R within the expected time frame.	Vehicle functions that depend on the VCSEAT2R may be unavailable or may not function as expected.
VCFRONT_a625_leftHeadlampInternalErrorV4	The front vehicle controller (VCFRONT) detects a condition affecting the functionality of the left headlight.	The voltage measured across the boost rail, high beam, low beam, 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 headlamp EEPROM are out of range.	Some headlight functions may be unavailable or may not function as expected. Headlight functionality may return after vehicle sleep.
VCFRONT_a626_LVBatteryResistanceIncrease	The Low Voltage (LV) battery internal resistance indicates degradation is present. Replacing the battery during service is recommended to prevent a future service visit.	Direct Current Resistance (DCR) measurement of the LV battery's internal resistance reports a higher value than expected.	The LV battery internal resistance may degrade to a point requiring replacement. If this happens, then an alert will set indicating LV battery replacement is needed.
VCFRONT_a613_selfTestsBlockingDrive	Low Voltage hardware self-tests in progress, drive is blocked until complete.	A drive request is asserted while Low Voltage hardware self-tests are in progress.	The vehicle will not enter Drive state until self-tests complete.
VCFRONT_a599_LVBatteryTypeUnsupported	The low voltage (LV) battery type reported by the vehicle gateway (GTW) configuration is a battery type not supported by this controller / firmware.	The LV battery type indicated by the GTW configuration value is an LV battery type not supported by this controller / firmware.	The LV battery system will not be updated to support the new configuration reported by the GTW configuration value. LV battery performance may be limited. LV battery support for vehicle electrical systems may be limited or unavailable.
VCFRONT_a598_eFuseSelfTestFailureService	The front vehicle controller has detected a problem during an eFuse self-test.	Voltage conditions during the self-test sequence are not met.	An eFuse may be unable to turn off or on. Front vehicle controller (VCFRONT) may not function as expected.
VCFRONT_a600_currentSensorMismatch	The current measurement reported by the LV battery (LVBMS_packCurrent) does not match the current sensor on the vehicle controller LV battery feed (IBSCurrent).	The absolute value of current difference between LVBMS_packCurrent and IBSCurrent exceeds nominal expectations	Incorrect battery current data being used, resulting in sub-optimal LV battery management.
VCFRONT_a605_sleepBypassPowerOff	The Front Vehicle Controller (VCFRONT) has detected the sleep bypass voltage is low and cannot support vehicle sleep.	The sleep bypass voltage is below 8V.	The load being precharged may not turn on. Vehicle functions relying on the load being precharged may not operate as expected. The vehicle may not sleep and will experience higher idle range loss
VCFRONT_a597_vcrightFastBlowPowerCutoff	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.	There is a sudden high power draw being observed on the VCRIGHT that is outside of the defined operating threshold.	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.
VCFRONT_a593_vcleftFastBlowPowerCutoff	The front vehicle controller (VCFRONT) detects a sudden high power draw from the left vehicle controller (VCLEFT), causing the VCFRONT to power off the VCLEFT.	There is a sudden high power draw being observed on the VCLEFT that is outside of the defined operating threshold.	Vehicle may be unable to drive. Vehicle functions that depend on the VCLEFT (such as left side windows, doors, seat functions, and/or powered liftgate) may be unavailable or their performance may be affected.
VCFRONT_a592_vcleftCurvePowerCutoff	The front vehicle controller (VCFRONT) detects a power draw higher than expected from the left vehicle controller (VCLEFT), causing the VCFRONT to power off the VCLEFT.	The observed power draw on the VCLEFT is outside of the defined operating threshold for too long.	Vehicle may be unable to drive. Vehicle functions that depend on the VCLEFT (such as left side windows, doors, seat functions, and/or powered liftgate) may be unavailable or their performance may be affected.

VCLEFTS_a465_hvacLateralVaneUncalib

HVAC lateral vane actuator is uncalibrated.

The lateral vane actuator is not calibrated

The airwave control may be disabled

VCLEFTP_a133_TAS_PWMopenM

Mid height sensor disconnected, or signal line from mid Pulse Width Modulation (PWM) height sensor floating.

Mid height sensor disconnected, or signal line from mid PWM height sensor floating.

Air suspension leveling will be disabled. Systems with adaptive dampers will disable active damping control.

VCLEFTS_a088_SAS_MIA

One of more of the expected CAN messages from SAS (Steering Angle Sensor) were not received.

A message the local ECU expects to receive from the SAS (Steering Angle Sensor) ECU hasn't been received within the expected timeout or the drop rate is too high while the SAS is CAN active. The ECU is considered CAN active when VCLEFTS_vehGoToSleep is 0 AND VCLEFTS_vehiclePowerState is VEHICLE_POWER_STATE_DRIVE.

Automatic turn signal cancelling may be degraded.

VCLEFTS_a152_refrigSuctTempSns

The refrigerant suction temperature sensor has an electrical fault (disconnect, short, or internal). HVAC cabin cooling (air conditioning) and powertrain performance may be limited.

The sensor reads a power rail or ground reference voltage.

HVAC cabin cooling (air conditioning) and powertrain performance may be limited.

VCLEFTS_a240_pumpPwtPTICLatchFault

The motor has detected an electrical fault (short, disconnect, or internal). Powertrain performance may be limited.

The LV8907 integrated circuit has detected a fault that requires a stop.

The pump will not run. Powertrain performance may be limited. The circuit will be reset to attempt to clear the fault.

VCFRONT_a620_pumpAirLock

The front vehicle controller (VCFRONT) controller detects an air lock in the pump due to smaller than expected pump current values.

The pump current is below the minimum threshold value for more than 20 seconds.

Cabin climate control system air conditioning may be limited or unavailable. Powertrain performance may be limited.

VCFRONT_a623_LVUnhealthy

The LV system power or protection are compromised, driving is not recommended.

The LV system power or protection are compromised

Driving is not recommended when LV system is not healthy

VCFRONT_a616_VCSEAT2L_MIA

One or more of the messages the vehicle controller receives periodically from the left second row seat controller (VCSEAT2L) is not received, indicating the VCSEAT2L may be unavailable (MIA).

The vehicle controller does not receive one or more of the expected messages from the VCSEAT2L within the expected time frame.

Vehicle functions that depend on the VCSEAT2L may be unavailable or may not function as expected.

VCFRONT_a624_rightHeadlampInternalErrorV4

The front vehicle controller (VCFRONT) detects a condition affecting the functionality of the right headlight.

The voltage measured across the boost rail, high beam, low beam, 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 headlamp EEPROM are out of range.

Some headlight functions may be unavailable or may not function as expected. Headlight functionality may return after vehicle sleep.

VCFRONT_a617_VCSEAT2R_MIA

One or more of the messages the vehicle controller receives periodically from the right second row seat controller (VCSEAT2R) is not received, indicating the VCSEAT2R may be unavailable (MIA).

The vehicle controller does not receive one or more of the expected messages from the VCSEAT2R within the expected time frame.

Vehicle functions that depend on the VCSEAT2R may be unavailable or may not function as expected.

VCFRONT_a625_leftHeadlampInternalErrorV4

The front vehicle controller (VCFRONT) detects a condition affecting the functionality of the left headlight.

The voltage measured across the boost rail, high beam, low beam, 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 headlamp EEPROM are out of range.

Some headlight functions may be unavailable or may not function as expected. Headlight functionality may return after vehicle sleep.

VCFRONT_a626_LVBatteryResistanceIncrease

The Low Voltage (LV) battery internal resistance indicates degradation is present. Replacing the battery during service is recommended to prevent a future service visit.

Direct Current Resistance (DCR) measurement of the LV battery's internal resistance reports a higher value than expected.

The LV battery internal resistance may degrade to a point requiring replacement. If this happens, then an alert will set indicating LV battery replacement is needed.

VCFRONT_a613_selfTestsBlockingDrive

Low Voltage hardware self-tests in progress, drive is blocked until complete.

A drive request is asserted while Low Voltage hardware self-tests are in progress.

The vehicle will not enter Drive state until self-tests complete.

VCFRONT_a599_LVBatteryTypeUnsupported

The low voltage (LV) battery type reported by the vehicle gateway (GTW) configuration is a battery type not supported by this controller / firmware.

The LV battery type indicated by the GTW configuration value is an LV battery type not supported by this controller / firmware.

The LV battery system will not be updated to support the new configuration reported by the GTW configuration value. LV battery performance may be limited. LV battery support for vehicle electrical systems may be limited or unavailable.

VCFRONT_a598_eFuseSelfTestFailureService

The front vehicle controller has detected a problem during an eFuse self-test.

Voltage conditions during the self-test sequence are not met.

An eFuse may be unable to turn off or on. Front vehicle controller (VCFRONT) may not function as expected.

VCFRONT_a600_currentSensorMismatch

The current measurement reported by the LV battery (LVBMS_packCurrent) does not match the current sensor on the vehicle controller LV battery feed (IBSCurrent).

The absolute value of current difference between LVBMS_packCurrent and IBSCurrent exceeds nominal expectations

Incorrect battery current data being used, resulting in sub-optimal LV battery management.

VCFRONT_a605_sleepBypassPowerOff

The Front Vehicle Controller (VCFRONT) has detected the sleep bypass voltage is low and cannot support vehicle sleep.

The sleep bypass voltage is below 8V.

The load being precharged may not turn on. Vehicle functions relying on the load being precharged may not operate as expected. The vehicle may not sleep and will experience higher idle range loss

VCFRONT_a597_vcrightFastBlowPowerCutoff

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.

There is a sudden high power draw being observed on the VCRIGHT that is outside of the defined operating threshold.

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.

VCFRONT_a593_vcleftFastBlowPowerCutoff

The front vehicle controller (VCFRONT) detects a sudden high power draw from the left vehicle controller (VCLEFT), causing the VCFRONT to power off the VCLEFT.

There is a sudden high power draw being observed on the VCLEFT that is outside of the defined operating threshold.

Vehicle may be unable to drive. Vehicle functions that depend on the VCLEFT (such as left side windows, doors, seat functions, and/or powered liftgate) may be unavailable or their performance may be affected.

VCFRONT_a592_vcleftCurvePowerCutoff

The front vehicle controller (VCFRONT) detects a power draw higher than expected from the left vehicle controller (VCLEFT), causing the VCFRONT to power off the VCLEFT.

The observed power draw on the VCLEFT is outside of the defined operating threshold for too long.

Vehicle may be unable to drive. Vehicle functions that depend on the VCLEFT (such as left side windows, doors, seat functions, and/or powered liftgate) may be unavailable or their performance may be affected.

Alerts

Alerts