MyTeslaMate App

Signal Name	Description	Condition	Impact
EPBL_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
EPBL_a175_csmReleaseRetry	Electronic Parking Brake release was interrupted. Release will be retried.	(unitFaultStatus == FAULT_STATUS_RETRY) && (csmRequest == release)	Electronic Parking Brake did not release, it will retry a release and enter fault if retry fails
EPBL_a174_csmReleaseFailed	Electronic Parking Brake was unable to release due to fault.	Electronic Parking Brake faulted during release && (nonterminal == FALSE)	Electronic Parking Brake release in progress will be stopped due to the fault, caliper may not have fully released
EPBL_a137_PvUv	Motor positive lead voltage is lower than expected while active	The positive lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.	Caliper motor or harness may be damaged
EPBL_a136_PvOv	Motor positive lead voltage is higher than expected while active	The positive lead voltage measurement is higher than expected. This could be higher than 0.1 voltages if motor is driven in release direction, or higher than estimated PWM voltage if driven in the apply direction.	Caliper motor or harness may be damaged
EPBL_a135_NvUv	Motor negative lead voltage is lower than expected while active	The negative lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.	Caliper motor or harness may be damaged
EPBL_a172_SPI_MIA	The communication link between Electronic Parking Brake (EPB) and Electronic Parking Brake Monitor (EPBM) is not functioning as expected.	Either the Cyclic Redundancy Check (CRC) check has not completed as expected, or a message has not been received for 100ms. Alert disabled during over-the-air (OTA) firmware updates.	Electronic Parking Brake will not apply or release.
EPBL_a171_12vUv	The battery voltage measurement, nominally 12 volts, was lower than expected.	The vbat voltage measurement, is lower than 6.0 volts. If the measurement is lower than 0.25 volts, we do not set this alert, as this would indicated the switch supply is disabled.	12V Battery or low voltage systems may be damaged
EPBL_a170_12vOv	The battery voltage measurement, nominally 12 volts, was higher than expected.	The vbat voltage measurement is higher than 18.5 volts.	12V Battery or low voltage systems may be damaged
EPBL_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
EPBL_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
EPBL_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
EPBL_a131_RCU_MIA	One or more of the messages the vehicle controller receives periodically from the Redundant Controller Unit (RCU) is not received, indicating the RCU may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the RCU within the expected time frame.	Vehicle functions that depend on the RCU may be unavailable or may not function as expected.
EPBL_a130_BB_MIA	One or more of the messages the vehicle controller receives periodically from the Brake Booster (BB) is not received, indicating the BB may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the BB within the expected time frame.	Vehicle functions that depend on the BB may be unavailable or may not function as expected.
EPBL_a129_ICR_MIA	One or more expected controller area network (CAN) messages from the interior cabin radar (ICR) electronic control unit (ECU) was not received.	An expected CAN message from the ICR ECU has not been received within the expected timeout, or the CAN message drop rate is too high while the ICR is CAN active. The ICR ECU is considered CAN active when VCFRONT_vehGoToSleep is 0.	Intrusion alarm functionality may be missing.
EPBL_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
EPBL_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
EPBL_a120_DI_DRIVE_MIA	One or more of the messages the vehicle controller receives periodically from the drive interface (DI) electronic control unit (ECU) is not received while the vehicle is in Drive, indicating the DI ECU may be unavailable (MIA).	One or more of the expected messages from the DI ECU is not received while the vehicle is in Drive.	Vehicle speed and power may be limited.
EPBL_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.
EPBL_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.

EPBL_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

EPBL_a175_csmReleaseRetry

Electronic Parking Brake release was interrupted. Release will be retried.

(unitFaultStatus == FAULT_STATUS_RETRY) && (csmRequest == release)

Electronic Parking Brake did not release, it will retry a release and enter fault if retry fails

EPBL_a174_csmReleaseFailed

Electronic Parking Brake was unable to release due to fault.

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

Electronic Parking Brake release in progress will be stopped due to the fault, caliper may not have fully released

EPBL_a137_PvUv

Motor positive lead voltage is lower than expected while active

The positive lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.

Caliper motor or harness may be damaged

EPBL_a136_PvOv

Motor positive lead voltage is higher than expected while active

The positive lead voltage measurement is higher than expected. This could be higher than 0.1 voltages if motor is driven in release direction, or higher than estimated PWM voltage if driven in the apply direction.

Caliper motor or harness may be damaged

EPBL_a135_NvUv

Motor negative lead voltage is lower than expected while active

The negative lead voltage measurement is lower than expected. The expected value is the lower of 16.5 volts, or the estimated PWM voltage.

Caliper motor or harness may be damaged

EPBL_a172_SPI_MIA

The communication link between Electronic Parking Brake (EPB) and Electronic Parking Brake Monitor (EPBM) is not functioning as expected.

Either the Cyclic Redundancy Check (CRC) check has not completed as expected, or a message has not been received for 100ms. Alert disabled during over-the-air (OTA) firmware updates.

Electronic Parking Brake will not apply or release.

EPBL_a171_12vUv

The battery voltage measurement, nominally 12 volts, was lower than expected.

The vbat voltage measurement, is lower than 6.0 volts. If the measurement is lower than 0.25 volts, we do not set this alert, as this would indicated the switch supply is disabled.

12V Battery or low voltage systems may be damaged

EPBL_a170_12vOv

The battery voltage measurement, nominally 12 volts, was higher than expected.

The vbat voltage measurement is higher than 18.5 volts.

12V Battery or low voltage systems may be damaged

EPBL_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

EPBL_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

EPBL_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

EPBL_a131_RCU_MIA

One or more of the messages the vehicle controller receives periodically from the Redundant Controller Unit (RCU) is not received, indicating the RCU may be unavailable (MIA).

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

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

EPBL_a130_BB_MIA

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

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

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

EPBL_a129_ICR_MIA

One or more expected controller area network (CAN) messages from the interior cabin radar (ICR) electronic control unit (ECU) was not received.

An expected CAN message from the ICR ECU has not been received within the expected timeout, or the CAN message drop rate is too high while the ICR is CAN active. The ICR ECU is considered CAN active when VCFRONT_vehGoToSleep is 0.

Intrusion alarm functionality may be missing.

EPBL_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

EPBL_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

EPBL_a120_DI_DRIVE_MIA

One or more of the messages the vehicle controller receives periodically from the drive interface (DI) electronic control unit (ECU) is not received while the vehicle is in Drive, indicating the DI ECU may be unavailable (MIA).

One or more of the expected messages from the DI ECU is not received while the vehicle is in Drive.

Vehicle speed and power may be limited.

EPBL_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.

EPBL_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.

Alerts

Alerts