MyTeslaMate App

Signal Name	Description	Condition	Impact	Important
VCREAR_a176_csmApplyFailed	Electronic Parking Brake apply failed.	Electronic Parking Brake faulted during apply && (nonterminal == FALSE)	Electronic Parking Brake apply in progress will be stopped due to the fault, caliper may not be fully applied	No
VCLEFT_a592_vehicleLoadShed	The low voltage (LV) battery is no longer supported by the power conversion system (PCS) due to a condition affecting the LV system. The vehicle low voltage electrical system needs to shed electrical loads by cutting power to some systems / electronic control units (ECUs)	Low voltage (LV) battery is not supported by the power conversion system (PCS)	All nonessential features / components will no longer be available, with support reserved for critical functions like operating doors, windows, exterior lights, and front trunk (frunk).	No
VCREAR_a138_NvmDualFailure	The Electronic Parking Brake and Electronic Parking Brake Monitor took longer than expected to save caliper state in non-volatile memory.	Caliper state saved to Electronic Parking Brake and Electronic Parking Brake Monitor mismatched	Non-volatile memory error due to Electronic Parking Brake and Electronic Parking Brake Monitor mismatch	No
VCREAR_a139_NvmRedundancyLoss	The Electronic Parking Brake or Electronic Parking Brake Monitor took longer than expected to save caliper state in non-volatile memory.	Caliper state saved to Electronic Parking Brake and Electronic Parking Brake Monitor mismatched for more than 500ms	Non-volatile memory error due to Electronic Parking Brake and Electronic Parking Brake Monitor mismatch	No
VCREAR_a141_invalidState	The Electronic Parking Brake made an unexpected state transition.	Electronic Parking Brake moved between states that are not marked as having a valid transition.	Logical bug in the software	No
VCREAR_a133_DI_MIA	One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).	One or more of the expected messages from the DIF ECU is not received.	Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.	No
VCREAR_a129_epbActiveDecelRequested	EPB is commanding the brakes to bring the vehicle to a stop	A critical ECU commands actice decel or vehicle is limp for 5 mins	Vehicle will decelerate	No
VCREAR_a130_epbLimpActivated	Limp mode activated	Any critical ECU requests limp	Vehicle will eventually apply brakes to bring vehicle to stop	No
VCREAR_a132_EGGRIGHT3_MIA	One or more of the expected CAN messages from the Etherloop Generalized Gateway Right (Core 3) were not received, indicating the EGGRIGHT3 ECU may be unavailable (MIA).	The local ECU does not receive one or more of the expected messages from the EGGRIGHT3 within the expected time frame.	Vehicle functions that depend on the EGGRIGHT3 may be unavailable or may not function as expected.	No
VCREAR_a142_EGGREAR1_MIA	One or more of the expected CAN messages from the Etherloop Generalized Gateway Rear (Core 1) were not received, indicating the EGGREAR1 ECU may be unavailable (MIA).	The local ECU does not receive one or more of the expected messages from the EGGREAR1 within the expected time frame.	Vehicle functions that depend on the EGGREAR1 may be unavailable or may not function as expected.	No
VCREAR_a125_IdleVMismatch	The caliper may be disconnected.	The Electronic Parking Brake motor is idle, and the positive and negative lead's voltage measurement are more than 0.25V different	Electronic Parking Brake may not be able to apply or release	No
VCREAR_a126_MotorNVoltLow	Motor negative lead voltage measurement is less than 0.5 volts while inactive	The Electronic Parking Brake motor is idle, and the negative lead voltage measurement is lower than 0.5 volts.	Caliper motor or harness may be damaged	No
VCREAR_a122_Oc	Motor current was higher than expected.	Motor current measurement, with calibration offset subtracted, was higher than 17 amps.	Caliper motor or harness may be damaged	No
VCREAR_a124_calOutOfBounds	The 0 drive offset current captured as calibration was higher than expected.	The calibration offset current measured when motor is not being driven was higher than 3.0 amps	Caliper, Electronic Parking Brake controller, or harness could be damaged. Components may be damaged by high temperatures	No
VCREAR_a127_MotorNVoltHigh	Motor negative lead voltage is greater than 6.0 volts while inactive	The Electronic Parking Brake motor is idle, and the negative lead voltage measurement is higher than 6.0 volts.	Caliper motor or harness may be damaged	No
VCREAR_a119_SCCM_MIA	One or more of the messages the vehicle controller receives periodically from the Steering Column Control Module (SCCM) is not received, indicating the SCCM may be unavailable (MIA).	One or more of the expected messages from the SCCM is not received.	Vehicle may be unable to shift between drive modes.	No
VCREAR_a120_DI_DRIVE_MIA	One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).	One or more of the expected messages from the DIF ECU is not received.	Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.	No
VCREAR_a128_MotorPVoltHigh	Motor positive lead voltage is greater than 6.0 volts while inactive	The Electronic Parking Brake motor is idle, and the positive lead voltage measurement is higher than 6.0 volts.	Caliper motor or harness may be damaged	No
VCREAR_a144_EGGLEFTVC_MIA	One or more of the expected CAN messages from the Etherloop Generalized Gateway Left (Core 1) were not received, indicating the EGGLEFTVC ECU may be unavailable (MIA).	The local ECU does not receive one or more of the expected messages from the EGGLEFTVC within the expected time frame.	Vehicle functions that depend on the EGGLEFTVC may be unavailable or may not function as expected.	No
VCREAR_a115_VCSEC_MIA	One or more of the messages the vehicle controller receives periodically from the security (VCSEC) electronic control unit (ECU) 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.	Vehicle functions that depend on the VCSEC may be unavailable or may not function as expected.	No

VCREAR_a176_csmApplyFailed

Electronic Parking Brake apply failed.

Electronic Parking Brake faulted during apply && (nonterminal == FALSE)

Electronic Parking Brake apply in progress will be stopped due to the fault, caliper may not be fully applied

No

VCLEFT_a592_vehicleLoadShed

The low voltage (LV) battery is no longer supported by the power conversion system (PCS) due to a condition affecting the LV system. The vehicle low voltage electrical system needs to shed electrical loads by cutting power to some systems / electronic control units (ECUs)

Low voltage (LV) battery is not supported by the power conversion system (PCS)

All nonessential features / components will no longer be available, with support reserved for critical functions like operating doors, windows, exterior lights, and front trunk (frunk).

No

VCREAR_a138_NvmDualFailure

The Electronic Parking Brake and Electronic Parking Brake Monitor took longer than expected to save caliper state in non-volatile memory.

Caliper state saved to Electronic Parking Brake and Electronic Parking Brake Monitor mismatched

Non-volatile memory error due to Electronic Parking Brake and Electronic Parking Brake Monitor mismatch

No

VCREAR_a139_NvmRedundancyLoss

The Electronic Parking Brake or Electronic Parking Brake Monitor took longer than expected to save caliper state in non-volatile memory.

Caliper state saved to Electronic Parking Brake and Electronic Parking Brake Monitor mismatched for more than 500ms

Non-volatile memory error due to Electronic Parking Brake and Electronic Parking Brake Monitor mismatch

No

VCREAR_a141_invalidState

The Electronic Parking Brake made an unexpected state transition.

Electronic Parking Brake moved between states that are not marked as having a valid transition.

Logical bug in the software

No

VCREAR_a133_DI_MIA

One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).

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

Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.

No

VCREAR_a129_epbActiveDecelRequested

EPB is commanding the brakes to bring the vehicle to a stop

A critical ECU commands actice decel or vehicle is limp for 5 mins

Vehicle will decelerate

No

VCREAR_a130_epbLimpActivated

Limp mode activated

Any critical ECU requests limp

Vehicle will eventually apply brakes to bring vehicle to stop

No

VCREAR_a132_EGGRIGHT3_MIA

One or more of the expected CAN messages from the Etherloop Generalized Gateway Right (Core 3) were not received, indicating the EGGRIGHT3 ECU may be unavailable (MIA).

The local ECU does not receive one or more of the expected messages from the EGGRIGHT3 within the expected time frame.

Vehicle functions that depend on the EGGRIGHT3 may be unavailable or may not function as expected.

No

VCREAR_a142_EGGREAR1_MIA

One or more of the expected CAN messages from the Etherloop Generalized Gateway Rear (Core 1) were not received, indicating the EGGREAR1 ECU may be unavailable (MIA).

The local ECU does not receive one or more of the expected messages from the EGGREAR1 within the expected time frame.

Vehicle functions that depend on the EGGREAR1 may be unavailable or may not function as expected.

No

VCREAR_a125_IdleVMismatch

The caliper may be disconnected.

The Electronic Parking Brake motor is idle, and the positive and negative lead's voltage measurement are more than 0.25V different

Electronic Parking Brake may not be able to apply or release

No

VCREAR_a126_MotorNVoltLow

Motor negative lead voltage measurement is less than 0.5 volts while inactive

The Electronic Parking Brake motor is idle, and the negative lead voltage measurement is lower than 0.5 volts.

Caliper motor or harness may be damaged

No

VCREAR_a122_Oc

Motor current was higher than expected.

Motor current measurement, with calibration offset subtracted, was higher than 17 amps.

Caliper motor or harness may be damaged

No

VCREAR_a124_calOutOfBounds

The 0 drive offset current captured as calibration was higher than expected.

The calibration offset current measured when motor is not being driven was higher than 3.0 amps

Caliper, Electronic Parking Brake controller, or harness could be damaged. Components may be damaged by high temperatures

No

VCREAR_a127_MotorNVoltHigh

Motor negative lead voltage is greater than 6.0 volts while inactive

The Electronic Parking Brake motor is idle, and the negative lead voltage measurement is higher than 6.0 volts.

Caliper motor or harness may be damaged

No

VCREAR_a119_SCCM_MIA

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

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

Vehicle may be unable to shift between drive modes.

No

VCREAR_a120_DI_DRIVE_MIA

One or more of the messages the vehicle controller receives periodically from the front drive inverter (DIF) electronic control unit (ECU) is not received, indicating the DIF ECU may be unavailable (MIA).

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

Vehicle speed and power may be limited. Thermal management system features depending on DIF functionality may be limited or unavailable.

No

VCREAR_a128_MotorPVoltHigh

Motor positive lead voltage is greater than 6.0 volts while inactive

The Electronic Parking Brake motor is idle, and the positive lead voltage measurement is higher than 6.0 volts.

Caliper motor or harness may be damaged

No

VCREAR_a144_EGGLEFTVC_MIA

One or more of the expected CAN messages from the Etherloop Generalized Gateway Left (Core 1) were not received, indicating the EGGLEFTVC ECU may be unavailable (MIA).

The local ECU does not receive one or more of the expected messages from the EGGLEFTVC within the expected time frame.

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

No

VCREAR_a115_VCSEC_MIA

One or more of the messages the vehicle controller receives periodically from the security (VCSEC) electronic control unit (ECU) 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.

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

No

Alerts

Alerts