MyTeslaMate App

Signal Name	Description	Condition	Impact	Important
VCLEFT_a536_trunkFoldFlatSwitchFault	Trunk fold flat switch is unavailable, either due to a condition affecting functionality or because it is disconnected.	A condition affecting trunk fold flat switch is detected, or the switch is disconnected.	Trunk fold flat functionality for left and right seats is unavailable.	No
VCLEFT_a563_chargePortDoorOpenBlockedByBrake	Charge Port door open request not honored because brake is pressed.	The UI requests charge port door open while the customer has brake pedal pressed.	The vehicle will not allow the charge port door to open.	No
VCLEFT_a559_LVBatteryLowSOC	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).	The LVBMS detects the LV battery SOC is below 15% for 5 seconds.	The LV battery may be unable to support vehicle electrical systems.	No
VCLEFT_a523_eFuseThresholdsIncorrect	The eFuse application-specific integrated circuit (ASIC) on the vehicle controller has incorrect thresholds set.	The vehicle controller detects incorrect threshold values on its eFuse ASIC for 1 second.	The eFuse ASIC on the vehicle controller may not function as expected.	No
VCLEFT_a525_LVBatterySWMisconfiguration	The low voltage (LV) battery type detected on startup does not match the LV battery type reported by the vehicle gateway (GTW) configuration.	The LV battery type detected on startup does not match the LV battery type reported by the GTW configuration.	LV battery performance may be limited. LV battery support for vehicle electrical systems may be limited or unavailable.	No
VCLEFT_a527_LVBatteryCellImbalance	The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance.	The LVBMS detects that all LV battery cell voltages are not within 150mV of each other.	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.	No
VCLEFT_a521_vcleftEFuseLoadShed	The electrical current flowing through the left vehicle controller (VCLEFT) eFuse is greater or equal to 100A. The VCLEFT eFuse circuit may open (trip) if the low voltage (LV) electrical system loads are not reduced. The vehicle controller requests the VCLEFT to shed vehicle electrical loads by cutting power to the less essential loads.	The VCLEFT eFuse current value equals or exceeds 100A for 100 milliseconds.	Some convenience features controlled by the VCLEFT will be unavailable as the vehicle controller limits the LV electrical system current draw by cutting power to some loads.	No
VCLEFT_a518_LVBMSFault_MOS_Open_packOV	The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a pack overvoltage condition.	The LVBMS detects a pack overvoltage condition affecting the LV battery.	The LV battery may be damaged and may be unable to support vehicle electrical systems.	No
VCLEFT_a520_configMismatch	The Electronic Parking Brake (EPB) configuration differs from the EPB configuration reported by Gateway (GTW). The Electronic Parking Brake Monitor (EPBM) expects the configuration from EPB to be valid based on GTW vehicle configuration.	5 seconds after boot, the vehicle reports the EPB configuration and GTW vehicle EPB configuration is mismatched.	When an inconsistency between GTW and EPB configurations is present, the EPB configuration is used.	No
VCLEFT_a528_LVBatteryCommsDiscnctd	The low voltage (LV) battery is not communicating as expected, indicating a potential disconnection with the vehicle controller.	Electronic connector position assurance (ECPA) state is signal not available (SNA), or the intelligent battery sensor (IBS) is not functioning as expected and the low voltage battery management system (LVBMS) is not communicating (MIA).	Loss of low voltage (LV) battery communication with vehicle controller, so the vehicle electrical system may only be supported via the power conversion system (PCS).	No
VCLEFT_a514_LVBMSFault_MOS_Open_cellUV	The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a cell undervoltage condition.	The LVBMS detects a cell undervoltage condition affecting the LV battery.	The LV battery may be damaged and may be unable to support vehicle electrical systems.	No
VCLEFT_a511_IDRRearMIA	Rear IDR not responding on LIN	Rear IDR not responding on LIN	Rear IDR will not function	No
VCLEFT_a515_LVBMSFault_MOS_Open_cellOV	The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a cell overvoltage condition.	The LVBMS detects a cell overvoltage condition affecting the LV battery.	The LV battery may be damaged and may be unable to support vehicle electrical systems.	No
VCLEFT_a517_3RowSeatRequestWhileUncalibrated	The calibration for the third row seat was unsuccessful or did not run.	Third row seat movement is requested, but the seat calibration was unsuccessful or did not run.	Automatic fold and unfold movements for the third row seat are unavailable. Only manual seat adjustments are available.	No
VCLEFT_a510_IDRFrontMIA	Front IDR not responding on LIN	Front IDR not responding on LIN	Front IDR will not function	No
VCLEFT_a508_swsHapticUncalibrated	Steering wheel haptic strength is uncalibrated or attempting calibration	Steering wheel haptic strength is uncalibrated	Steering wheel haptics strength may be weak without calibration	No
VCLEFT_a518_3RowSeatClashAvoidanceBlocked	The third row seat is physically blocked by the front row seat, preventing seat movement.	The third row seat is requested to move but may collide with the front row seat, and the front row seat is unable to automatically move out of the way.	The front row seat may need to be manually adjusted to allow the requested third row seat movement to complete.	No
VCLEFT_a529_displayMechTestNeeded	The left vehicle controller (VCLEFT) detects that the center display tilt mechanism does not have the valid rate tables needed for pinch detection and requires the functional test, PROC_VCLEFT_DISPLAY-MECH-TEST, to be run.	PROC_VCLEFT_DISPLAY-MECH-TEST runs unsuccessfully, is not finished running, or has not been run.	The center display tilt mechanism may not function as expected, which may lead to false pinches.	No
VCLEFT_a510_3RowSeatUncalibrated	The third row seat is not properly calibrated and can only be adjusted manually.	Third row seat calibration was unsuccessful or did not run.	Third row seat automatic fold and unfold movements are not allowed. Only manual adjustments are allowed.	No
VCLEFT_a510_LVBatteryRecoveryTimeout	A low voltage (LV) battery recovery attempt has timed out and has been aborted, and the internal protection transistor (MOSFET) has been opened. May occur because an external power supply is connected to the LV battery, or due to a high impedance connection between the power conversion system (PCS) and LV battery. The low voltage battery management system (LVBMS) reports a FAULT state.	The LVBMS reports an LV battery recovery attempt has timed out and has been aborted because 50 seconds have passed without the LVBMS detecting adequate current flow to the LV battery across the internal protection transistor (MOSFET).	The high voltage (HV) system will remain energized to continue supplying electrical power to the vehicle while the LV battery is unavailable. This may result in greater range loss than expected, increased HV system energy consumption when the vehicle is idle, and prevent the vehicle from sleeping. The vehicle will be unable to drive while this alert persists.	No

VCLEFT_a536_trunkFoldFlatSwitchFault

Trunk fold flat switch is unavailable, either due to a condition affecting functionality or because it is disconnected.

A condition affecting trunk fold flat switch is detected, or the switch is disconnected.

Trunk fold flat functionality for left and right seats is unavailable.

No

VCLEFT_a563_chargePortDoorOpenBlockedByBrake

Charge Port door open request not honored because brake is pressed.

The UI requests charge port door open while the customer has brake pedal pressed.

The vehicle will not allow the charge port door to open.

No

VCLEFT_a559_LVBatteryLowSOC

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).

The LVBMS detects the LV battery SOC is below 15% for 5 seconds.

The LV battery may be unable to support vehicle electrical systems.

No

VCLEFT_a523_eFuseThresholdsIncorrect

The eFuse application-specific integrated circuit (ASIC) on the vehicle controller has incorrect thresholds set.

The vehicle controller detects incorrect threshold values on its eFuse ASIC for 1 second.

The eFuse ASIC on the vehicle controller may not function as expected.

No

VCLEFT_a525_LVBatterySWMisconfiguration

The low voltage (LV) battery type detected on startup does not match the LV battery type reported by the vehicle gateway (GTW) configuration.

The LV battery type detected on startup does not match the LV battery type reported by the GTW configuration.

LV battery performance may be limited. LV battery support for vehicle electrical systems may be limited or unavailable.

No

VCLEFT_a527_LVBatteryCellImbalance

The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance.

The LVBMS detects that all LV battery cell voltages are not within 150mV of each other.

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.

No

VCLEFT_a521_vcleftEFuseLoadShed

The electrical current flowing through the left vehicle controller (VCLEFT) eFuse is greater or equal to 100A. The VCLEFT eFuse circuit may open (trip) if the low voltage (LV) electrical system loads are not reduced. The vehicle controller requests the VCLEFT to shed vehicle electrical loads by cutting power to the less essential loads.

The VCLEFT eFuse current value equals or exceeds 100A for 100 milliseconds.

Some convenience features controlled by the VCLEFT will be unavailable as the vehicle controller limits the LV electrical system current draw by cutting power to some loads.

No

VCLEFT_a518_LVBMSFault_MOS_Open_packOV

The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a pack overvoltage condition.

The LVBMS detects a pack overvoltage condition affecting the LV battery.

The LV battery may be damaged and may be unable to support vehicle electrical systems.

No

VCLEFT_a520_configMismatch

The Electronic Parking Brake (EPB) configuration differs from the EPB configuration reported by Gateway (GTW). The Electronic Parking Brake Monitor (EPBM) expects the configuration from EPB to be valid based on GTW vehicle configuration.

5 seconds after boot, the vehicle reports the EPB configuration and GTW vehicle EPB configuration is mismatched.

When an inconsistency between GTW and EPB configurations is present, the EPB configuration is used.

No

VCLEFT_a528_LVBatteryCommsDiscnctd

The low voltage (LV) battery is not communicating as expected, indicating a potential disconnection with the vehicle controller.

Electronic connector position assurance (ECPA) state is signal not available (SNA), or the intelligent battery sensor (IBS) is not functioning as expected and the low voltage battery management system (LVBMS) is not communicating (MIA).

Loss of low voltage (LV) battery communication with vehicle controller, so the vehicle electrical system may only be supported via the power conversion system (PCS).

No

VCLEFT_a514_LVBMSFault_MOS_Open_cellUV

The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a cell undervoltage condition.

The LVBMS detects a cell undervoltage condition affecting the LV battery.

The LV battery may be damaged and may be unable to support vehicle electrical systems.

No

VCLEFT_a511_IDRRearMIA

Rear IDR not responding on LIN

Rear IDR will not function

No

VCLEFT_a515_LVBMSFault_MOS_Open_cellOV

The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a cell overvoltage condition.

The LVBMS detects a cell overvoltage condition affecting the LV battery.

The LV battery may be damaged and may be unable to support vehicle electrical systems.

No

VCLEFT_a517_3RowSeatRequestWhileUncalibrated

The calibration for the third row seat was unsuccessful or did not run.

Third row seat movement is requested, but the seat calibration was unsuccessful or did not run.

Automatic fold and unfold movements for the third row seat are unavailable. Only manual seat adjustments are available.

No

VCLEFT_a510_IDRFrontMIA

Front IDR not responding on LIN

Front IDR will not function

No

VCLEFT_a508_swsHapticUncalibrated

Steering wheel haptic strength is uncalibrated or attempting calibration

Steering wheel haptic strength is uncalibrated

Steering wheel haptics strength may be weak without calibration

No

VCLEFT_a518_3RowSeatClashAvoidanceBlocked

The third row seat is physically blocked by the front row seat, preventing seat movement.

The third row seat is requested to move but may collide with the front row seat, and the front row seat is unable to automatically move out of the way.

The front row seat may need to be manually adjusted to allow the requested third row seat movement to complete.

No

VCLEFT_a529_displayMechTestNeeded

The left vehicle controller (VCLEFT) detects that the center display tilt mechanism does not have the valid rate tables needed for pinch detection and requires the functional test, PROC_VCLEFT_DISPLAY-MECH-TEST, to be run.

PROC_VCLEFT_DISPLAY-MECH-TEST runs unsuccessfully, is not finished running, or has not been run.

The center display tilt mechanism may not function as expected, which may lead to false pinches.

No

VCLEFT_a510_3RowSeatUncalibrated

The third row seat is not properly calibrated and can only be adjusted manually.

Third row seat calibration was unsuccessful or did not run.

Third row seat automatic fold and unfold movements are not allowed. Only manual adjustments are allowed.

No

VCLEFT_a510_LVBatteryRecoveryTimeout

A low voltage (LV) battery recovery attempt has timed out and has been aborted, and the internal protection transistor (MOSFET) has been opened. May occur because an external power supply is connected to the LV battery, or due to a high impedance connection between the power conversion system (PCS) and LV battery. The low voltage battery management system (LVBMS) reports a FAULT state.

The LVBMS reports an LV battery recovery attempt has timed out and has been aborted because 50 seconds have passed without the LVBMS detecting adequate current flow to the LV battery across the internal protection transistor (MOSFET).

The high voltage (HV) system will remain energized to continue supplying electrical power to the vehicle while the LV battery is unavailable. This may result in greater range loss than expected, increased HV system energy consumption when the vehicle is idle, and prevent the vehicle from sleeping. The vehicle will be unable to drive while this alert persists.

No

Alerts

Alerts