MyTeslaMate App

Signal Name	Description	Condition	Impact	Important
VCBATT_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
VCBATT_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
VCBATT_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
VCBATT_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
VCBATT_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
VCBATT_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
VCBATT_a516_hibernationActive	Vehicle will enter deep sleep to conserve energy in 10 minutes. It is possible to wake the vehicle up within the next 10 minutes by pressing the trunk button or applying external voltage to the front trunk (frunk) access posts.	The vehicle is in Transport Mode and the high voltage (HV) battery state of charge (SOC) is low.	Vehicle will only wake from deep sleep via a trunk button press or when external voltage is applied to the frunk access posts.	No
VCBATT_a517_hibernationRecovery	The vehicle is attempting to recover from a deep sleep. If the vehicle does not begin charging, the vehicle will reenter deep sleep after 10 minutes.	The vehicle is in Transport Mode, the high voltage (HV) battery state of charge (SOC) is low, and the user attempts to interact with the vehicle.	Vehicle requires charging before it can be recovered from deep sleep. Until adequately charged, the vehicle will only wake from deep sleep via a trunk button press or when external voltage is applied to the frunk access posts.	No
VCBATT_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
VCBATT_a512_LVBMSFault_MOS_Open_hardwareOC	The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a hardware overcurrent condition.	The LVBMS detects a hardware overcurrent condition affecting the LV battery.	The LV battery may be damaged and may be unable to support vehicle electrical systems.	No
VCBATT_a513_LVBMSFault_MOS_Open_chgOC	The low voltage battery management system (LVBMS) reports it has opened the low voltage (LV) battery internal protection transistor (MOSFET) after detecting a charge overcurrent condition.	The LVBMS detects a charge overcurrent condition affecting the LV battery.	The LV battery may be damaged and may be unable to support vehicle electrical systems.	No
VCDOORFL_a093_VCSEATP_MIA	One or more of the messages the vehicle controller receives periodically from the front passenger seat controller (VCSEATP) is not received, indicating the VCSEATP may be unavailable (MIA).	One or more of the expected messages from the VCSEATP is not received.	Front passenger seat features depending on VCSEATP functionality, including seat buckle and heating pad, may be limited or unavailable.	No
VCDOORFL_a096_OCS1P_MIA	One or more of the messages the vehicle controller receives periodically from the 1st row passenger occupancy classification system (OCS1P) electronic control unit (ECU) is not received, indicating the OCS1P ECU may be unavailable (MIA).	One or more of the expected messages from the OCS1P ECU is not received.	Vehicle functions that depend on the OCS1P may be unavailable or may not function as expected.	No
VCBATT_a540_leftFogLightGuideLightFault	An electrical error has been detected with the left fog light guide (white light pipe in front fascia that turns on along with fog light).	The high side driver (HSD) for the left fog light guide reports that an undercurrent or short circuit condition is present.	The left fog light guide may not be working.	No
VCBATT_a122_pumpBatICWarning	The motor has a circuit warning. Powertrain performance may be limited.	The LV8907 integrated circuit has detected a warning that should be reported.	The battery pump may not run. Powertrain performance may be limited.	No
VCBATT_a015_NVMMError	An issue is indicated from the non-volatile memory manager.	Non-volatile memory misconfiguration or underlying flash/filesystem error.	Non-volatile memory records may be incorrect or missing.	No
VCBATT_a100_CANbus_MIA	More than half of the ECUs on a either the VEH or PARTY bus are missing more than half their messages while the bus should be active	If 50% or more of the ECUs the local ECUs listens to are MIA, and the local ECU receives from more than 3 ECUs on this bus. An ECU is MIA if more than 50% of its messages are MIA and that ECU is considered CAN active (see specific ECU's MIA alert for CAN active conditions).	Vehicle functionality may be degraded.	No
USM_a200_s12Disconnected	Alert indicating that the sensor is disconnected	When the sensor is disconnected	Park assist features will be disabled.	No
USM_a227_s1InitError	Alert indicating that there has been an init issue related to the sensor	When any error bit is set by the sensor	Sensor function will be impaired, park assist features will be disabled.	No
VCBATT_a010_ExtSupplyVoltError	The vehicle controller detects the supply voltage from 1 or more components is outside of the expected range.	The vehicle controller detects the supply voltage from 1 or more components is < 7.31. Alert log signal data should provide more information on the specific condition(s) detected.	Features depending on the vehicle controller functionality may be unavailable or may not function as expected.	No

VCBATT_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

VCBATT_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

VCBATT_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

VCBATT_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

VCBATT_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

VCBATT_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

VCBATT_a516_hibernationActive

Vehicle will enter deep sleep to conserve energy in 10 minutes. It is possible to wake the vehicle up within the next 10 minutes by pressing the trunk button or applying external voltage to the front trunk (frunk) access posts.

The vehicle is in Transport Mode and the high voltage (HV) battery state of charge (SOC) is low.

Vehicle will only wake from deep sleep via a trunk button press or when external voltage is applied to the frunk access posts.

No

VCBATT_a517_hibernationRecovery

The vehicle is attempting to recover from a deep sleep. If the vehicle does not begin charging, the vehicle will reenter deep sleep after 10 minutes.

The vehicle is in Transport Mode, the high voltage (HV) battery state of charge (SOC) is low, and the user attempts to interact with the vehicle.

Vehicle requires charging before it can be recovered from deep sleep. Until adequately charged, the vehicle will only wake from deep sleep via a trunk button press or when external voltage is applied to the frunk access posts.

No

VCBATT_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

VCBATT_a512_LVBMSFault_MOS_Open_hardwareOC

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

The LVBMS detects a hardware overcurrent condition affecting the LV battery.

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

No

VCBATT_a513_LVBMSFault_MOS_Open_chgOC

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

The LVBMS detects a charge overcurrent condition affecting the LV battery.

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

No

VCDOORFL_a093_VCSEATP_MIA

One or more of the messages the vehicle controller receives periodically from the front passenger seat controller (VCSEATP) is not received, indicating the VCSEATP may be unavailable (MIA).

One or more of the expected messages from the VCSEATP is not received.

Front passenger seat features depending on VCSEATP functionality, including seat buckle and heating pad, may be limited or unavailable.

No

VCDOORFL_a096_OCS1P_MIA

One or more of the messages the vehicle controller receives periodically from the 1st row passenger occupancy classification system (OCS1P) electronic control unit (ECU) is not received, indicating the OCS1P ECU may be unavailable (MIA).

One or more of the expected messages from the OCS1P ECU is not received.

Vehicle functions that depend on the OCS1P may be unavailable or may not function as expected.

No

VCBATT_a540_leftFogLightGuideLightFault

An electrical error has been detected with the left fog light guide (white light pipe in front fascia that turns on along with fog light).

The high side driver (HSD) for the left fog light guide reports that an undercurrent or short circuit condition is present.

The left fog light guide may not be working.

No

VCBATT_a122_pumpBatICWarning

The motor has a circuit warning. Powertrain performance may be limited.

The LV8907 integrated circuit has detected a warning that should be reported.

The battery pump may not run. Powertrain performance may be limited.

No

VCBATT_a015_NVMMError

An issue is indicated from the non-volatile memory manager.

Non-volatile memory misconfiguration or underlying flash/filesystem error.

Non-volatile memory records may be incorrect or missing.

No

VCBATT_a100_CANbus_MIA

More than half of the ECUs on a either the VEH or PARTY bus are missing more than half their messages while the bus should be active

If 50% or more of the ECUs the local ECUs listens to are MIA, and the local ECU receives from more than 3 ECUs on this bus. An ECU is MIA if more than 50% of its messages are MIA and that ECU is considered CAN active (see specific ECU's MIA alert for CAN active conditions).

Vehicle functionality may be degraded.

No

USM_a200_s12Disconnected

Alert indicating that the sensor is disconnected

When the sensor is disconnected

Park assist features will be disabled.

No

USM_a227_s1InitError

Alert indicating that there has been an init issue related to the sensor

When any error bit is set by the sensor

Sensor function will be impaired, park assist features will be disabled.

No

VCBATT_a010_ExtSupplyVoltError

The vehicle controller detects the supply voltage from 1 or more components is outside of the expected range.

The vehicle controller detects the supply voltage from 1 or more components is < 7.31. Alert log signal data should provide more information on the specific condition(s) detected.

Features depending on the vehicle controller functionality may be unavailable or may not function as expected.

No

Alerts

Alerts