MyTeslaMate App

Signal Name	Description	Condition	Impact
VCBATT_a118_VCFRONT_MIA	One or more of the messages the vehicle controller receives periodically from the front vehicle controller (VCFRONT) is not received, indicating the VCFRONT may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the VCFRONT within the expected time frame.	Vehicle functions that depend on the VCFRONT may be unavailable or may not function as expected.
VCBATT_a146_pumpBatSoftStall	The motor cannot reach the target RPM. Powertrain performance may be limited.	The motor RPM is incapable of reaching the target RPM for some time.	The battery pump will not run. Powertrain performance may be limited. A reset will occur to attempt to clear the fault.
VCBATT_a123_pumpRadICLatchFault	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 radiator pump will not run. Powertrain performance may be limited. The circuit will be reset to attempt to clear the fault.
VCBATT_a117_VCLEFT_MIA	One or more of the messages the vehicle controller receives periodically from the left vehicle controller (VCLEFT) is not received, indicating the VCLEFT may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the VCLEFT within the expected time frame.	Vehicle functions that depend on the VCLEFT may be unavailable or may not function as expected.
VCBATT_a110_GTW_MIA	One or more expected Controller Area Network (CAN) messages from the vehicle gateway (GTW) was not received. Vehicle functions that depend on CAN messages from the GTW may be unavailable, or their performance may be affected.	An expected CAN message from the vehicle gateway (GTW) has not been received within the expected timeout, or the message drop rate is too high while the GTW is CAN active. The GTW is considered CAN active when VCFRONT_vehGoToSleep is 0.	Vehicle functions that depend on CAN messages from the vehicle gateway (GTW) may be unavailable, or their performance may be affected.
VCBATT_a111_EPBR_MIA	One or more of the messages the vehicle controller receives periodically from the right Electronic Park Brake (EPBR) electronic control unit (ECU) is not received, indicating the EPBR ECU may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the EPBR ECU within the expected time frame.	The parking brake may be unavailable or may not function as expected.
VCBATT_a112_EPBL_MIA	One or more of the messages the vehicle controller receives periodically from the left Electronic Park Brake (EPBL) electronic control unit (ECU) is not received, indicating the EPBL ECU may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the EPBL ECU within the expected time frame.	The parking brake may be unavailable or may not function as expected.
VCBATT_a114_ESP_MIA	One or more expected Controller Area Network (CAN) messages from the Electronic Stability Program (ESP) electronic control unit (ECU) was not received. Stability and traction control functions may be unavailable, or their performance may be affected.	An expected CAN message from the Electronic Stability Program (ESP) electronic control unit (ECU) has not been received within the expected timeout, or the message drop rate is too high while the ESP is CAN active. The ESP is considered CAN active when VCFRONT_privateGoToSleep is 0 AND VCFRONT_espLVState is LV_ON.	Stability and traction control functions may be unavailable, or their performance may be affected.
VCBATT_a109_RCM_MIA	One or more of the messages the vehicle controller receives periodically from the Restraint Control Module (RCM) is not received, indicating the RCM may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the RCM within the expected time frame.	Vehicle functions that depend on the RCM may be unavailable or may not function as expected.
VCBATT_a115_VCSEC_MIA	One or more of the messages the vehicle controller receives periodically from the vehicle security controller (VCSEC) is not received, indicating the VCSEC may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the VCSEC within the expected time frame.	Features depending on VCSEC functionality, including vehicle security and communication with authentication devices, may be limited or unavailable.
VCBATT_a562_LVBMSModuleOvertemperature	The Low Voltage Battery Management System (LVBMS) detects that the low voltage (LV) battery pack is experiencing high temperatures.	The LVBMS module temperature has reached 60 deg C for 1 second.	The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.
VCBATT_a579_leftHeadlightEFuseTrip	The vehicle battery controller (VCBATT) detects an eFuse overcurrent event (or a trip) on the left headlight power feed.	The VCBATT detects an eFuse overcurrent event on the left headlight power feed.	The left headlight may be unavailable or may not function as expected.
VCBATT_a116_VCRIGHT_MIA	One or more of the messages the vehicle controller receives periodically from the right vehicle controller (VCRIGHT) is not received, indicating the VCRIGHT may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the VCRIGHT within the expected time frame.	Vehicle functions that depend on the VCRIGHT may be unavailable or may not function as expected.
VCBATT_a150_pumpBatLowRPMCBang	The motor has a circuit warning. Powertrain performance may be limited.	A non-zero brushless motor RPM below the RPM target is not increasing for some time.	The battery pump will not run. Powertrain performance may be limited. A reset will occur to attempt to clear the fault.
VCBATT_a561_LVBMSEFuseOvertemperature	The Low Voltage Battery Management System (LVBMS) detects high temperature at the low voltage (LV) battery MOSFET (internal protection transistor).	The LVBMS MOSFET temperature has reached 100 deg C for 1 second.	The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.
VCBATT_a151_pumpRadLowRPMCBang	The motor has a circuit warning. Powertrain performance may be limited.	A non-zero brushless motor RPM below the RPM target is not increasing for some time.	The radiator pump will not run. Powertrain performance may be limited. A reset will occur to attempt to clear the fault.
VCBATT_a548_HVFaultLoadShed	The low voltage (LV) battery is discharging, even though high voltage (HV) system support has been requested. Vehicle loadshedding will occur, and a separate alert will be present to indicate that condition.	LV battery is being discharged, even though the HV system should be supporting both the LV battery and the LV bus.	Vehicle loadshedding is triggered, and a separate alert will be present to indicate that condition and its impacts.
VCBATT_a555_LVBatteryCellRebalancing	The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance and is attempting to rebalance the cell voltages. The vehicle will be kept awake to support the LV battery until the rebalancing attempt is complete.	The LVBMS detects that all LV battery cell voltages are not within 100mV 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.
VCBATT_a582_goodForPCSPowerCycle	The vehicle controller (VC) identified the PCS is MIA and may be in need of a power cycle to be recovered. This alert indicates the low voltage (LV) battery is in good state to support this.	The PCS is MIA when expected to be active on CAN, the LV battery is connected, the vehicle is not in service mode, and the vehicle is not being updated.	The PCS may be power cycled by the high voltage system.
VCBATT_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.

VCBATT_a118_VCFRONT_MIA

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

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

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

VCBATT_a146_pumpBatSoftStall

The motor cannot reach the target RPM. Powertrain performance may be limited.

The motor RPM is incapable of reaching the target RPM for some time.

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

VCBATT_a123_pumpRadICLatchFault

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

VCBATT_a117_VCLEFT_MIA

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

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

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

VCBATT_a110_GTW_MIA

One or more expected Controller Area Network (CAN) messages from the vehicle gateway (GTW) was not received. Vehicle functions that depend on CAN messages from the GTW may be unavailable, or their performance may be affected.

An expected CAN message from the vehicle gateway (GTW) has not been received within the expected timeout, or the message drop rate is too high while the GTW is CAN active. The GTW is considered CAN active when VCFRONT_vehGoToSleep is 0.

Vehicle functions that depend on CAN messages from the vehicle gateway (GTW) may be unavailable, or their performance may be affected.

VCBATT_a111_EPBR_MIA

One or more of the messages the vehicle controller receives periodically from the right Electronic Park Brake (EPBR) electronic control unit (ECU) is not received, indicating the EPBR ECU may be unavailable (MIA).

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

The parking brake may be unavailable or may not function as expected.

VCBATT_a112_EPBL_MIA

One or more of the messages the vehicle controller receives periodically from the left Electronic Park Brake (EPBL) electronic control unit (ECU) is not received, indicating the EPBL ECU may be unavailable (MIA).

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

The parking brake may be unavailable or may not function as expected.

VCBATT_a114_ESP_MIA

One or more expected Controller Area Network (CAN) messages from the Electronic Stability Program (ESP) electronic control unit (ECU) was not received. Stability and traction control functions may be unavailable, or their performance may be affected.

An expected CAN message from the Electronic Stability Program (ESP) electronic control unit (ECU) has not been received within the expected timeout, or the message drop rate is too high while the ESP is CAN active. The ESP is considered CAN active when VCFRONT_privateGoToSleep is 0 AND VCFRONT_espLVState is LV_ON.

Stability and traction control functions may be unavailable, or their performance may be affected.

VCBATT_a109_RCM_MIA

One or more of the messages the vehicle controller receives periodically from the Restraint Control Module (RCM) is not received, indicating the RCM may be unavailable (MIA).

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

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

VCBATT_a115_VCSEC_MIA

One or more of the messages the vehicle controller receives periodically from the vehicle security controller (VCSEC) is not received, indicating the VCSEC may be unavailable (MIA).

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

Features depending on VCSEC functionality, including vehicle security and communication with authentication devices, may be limited or unavailable.

VCBATT_a562_LVBMSModuleOvertemperature

The Low Voltage Battery Management System (LVBMS) detects that the low voltage (LV) battery pack is experiencing high temperatures.

The LVBMS module temperature has reached 60 deg C for 1 second.

The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.

VCBATT_a579_leftHeadlightEFuseTrip

The vehicle battery controller (VCBATT) detects an eFuse overcurrent event (or a trip) on the left headlight power feed.

The VCBATT detects an eFuse overcurrent event on the left headlight power feed.

The left headlight may be unavailable or may not function as expected.

VCBATT_a116_VCRIGHT_MIA

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

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

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

VCBATT_a150_pumpBatLowRPMCBang

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

A non-zero brushless motor RPM below the RPM target is not increasing for some time.

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

VCBATT_a561_LVBMSEFuseOvertemperature

The Low Voltage Battery Management System (LVBMS) detects high temperature at the low voltage (LV) battery MOSFET (internal protection transistor).

The LVBMS MOSFET temperature has reached 100 deg C for 1 second.

The low voltage (LV) battery may show degraded performance or become unavailable due to high temperatures.

VCBATT_a151_pumpRadLowRPMCBang

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

A non-zero brushless motor RPM below the RPM target is not increasing for some time.

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

VCBATT_a548_HVFaultLoadShed

The low voltage (LV) battery is discharging, even though high voltage (HV) system support has been requested. Vehicle loadshedding will occur, and a separate alert will be present to indicate that condition.

LV battery is being discharged, even though the HV system should be supporting both the LV battery and the LV bus.

Vehicle loadshedding is triggered, and a separate alert will be present to indicate that condition and its impacts.

VCBATT_a555_LVBatteryCellRebalancing

The low voltage battery management system (LVBMS) reports it has detected a low voltage (LV) battery cell voltage imbalance and is attempting to rebalance the cell voltages. The vehicle will be kept awake to support the LV battery until the rebalancing attempt is complete.

The LVBMS detects that all LV battery cell voltages are not within 100mV 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.

VCBATT_a582_goodForPCSPowerCycle

The vehicle controller (VC) identified the PCS is MIA and may be in need of a power cycle to be recovered. This alert indicates the low voltage (LV) battery is in good state to support this.

The PCS is MIA when expected to be active on CAN, the LV battery is connected, the vehicle is not in service mode, and the vehicle is not being updated.

The PCS may be power cycled by the high voltage system.

VCBATT_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.

Alerts

Alerts