MyTeslaMate App

Signal Name	Description	Condition	Impact
EPBR_a095_CHG_MIA	One or more of the messages the vehicle controller receives periodically from the onboard charger (CHG) electronic control unit (ECU) is not received, indicating the CHG ECU may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the CHG ECU within the expected time frame.	Charging may not start or may be interrupted unexpectedly.
EPBR_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.
EPBR_a099_PARK_MIA	One or more expected Controller Area Network (CAN) messages from the Park Assist (PARK) electronic control unit (ECU) was not received. Autopark and Summon functions may be unavailable, or their performance may be affected.	An expected CAN message from the Park Assist (PARK) electronic control unit (ECU) has not been received within the expected timeout, or the message drop rate is too high while the park assist ECU is CAN active. The PARK ECU is considered CAN active when VCFRONT_chGoToSleep is 0 AND VCFRONT_parkLVState is LV_ON.	Autopark and Summon functions may be unavailable, or their performance may be affected.
EPBR_a101_PM_MIA	One or more of the messages the vehicle controller receives periodically from the Pedal Monitor (PM) electronic control unit (ECU) is not received, indicating the PM ECU may be unavailable (MIA).	One or more of the expected messages from the PM ECU is not received.	Vehicle speed and power may be limited.
EPBR_a102_PTC_MIA	One or more of the messages the vehicle controller receives periodically from the Positive Temperature Coefficient (PTC) heater electronic control unit (ECU) is not received, indicating the PTC heater ECU may be unavailable (MIA).	One or more of the expected messages from the PTC heater ECU is not received.	Thermal management system features depending on PTC heater functionality may be limited or unavailable.
EPBR_a080_BCFDM_MIA	One or more expected Controller Area Network (CAN) messages from the Body Controller - Front Driver Door (BCFDM) electronic control unit (ECU) was not received. The front driver side door may not function as expected.	An expected CAN message from the Body Controller - Front Driver Door (BCFDM) electronic control unit (ECU) has not been received within the expected timeout, or the message drop rate is too high while the BCFDM is CAN active. The BCFDM is considered CAN active when VCFRONT_vehGoToSleep is 0.	The front driver side door may not function as expected.
EPBR_a103_CP_MIA	One or more of the messages the vehicle controller receives periodically from the charge port (CP) electronic control unit (ECU) is not received, indicating the CP ECU may be unavailable (MIA).	The vehicle controller does not receive one or more of the expected messages from the CP ECU within the expected time frame.	Charging may not start or may be interrupted unexpectedly.
EPBR_a081_APP_MIA	One or more of the messages the vehicle controller receives periodically from the APP is not received, indicating the APP may be unavailable (MIA).	One or more of the expected messages from the APP is not received.	Vehicle may be unable to shift between drive modes.
EPBR_a059_inputResistanceHigh	A large voltage drop is detected in the input power to the vehicle controller, indicating the resistance on the input power feed to the vehicle controller is higher than expected.	Estimated resistance on the input power feed to the vehicle controller is higher than expected.	The vehicle controller may be unavailable due to lack of adequate input power, limiting vehicle functionality or making the vehicle inoperable, with at least one other alert specific to that condition present.
EPBR_a057_HVP_MIA	One or more of the expected messages the electronic control unit (ECU) receives periodically from the high voltage processor (HVP) ECU is not received, indicating the HVP may be unavailable (MIA).	One or more of the expected messages from the HVP ECU is not received.	Vehicle may be unable to drive. Charging may be limited or unavailable.
EPBR_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
EPBR_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
EPBR_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
EPBR_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
EPBR_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
EPBR_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
EPBR_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.
EPBR_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
EPBR_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
EPBR_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

EPBR_a095_CHG_MIA

One or more of the messages the vehicle controller receives periodically from the onboard charger (CHG) electronic control unit (ECU) is not received, indicating the CHG ECU may be unavailable (MIA).

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

Charging may not start or may be interrupted unexpectedly.

EPBR_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.

EPBR_a099_PARK_MIA

One or more expected Controller Area Network (CAN) messages from the Park Assist (PARK) electronic control unit (ECU) was not received. Autopark and Summon functions may be unavailable, or their performance may be affected.

An expected CAN message from the Park Assist (PARK) electronic control unit (ECU) has not been received within the expected timeout, or the message drop rate is too high while the park assist ECU is CAN active. The PARK ECU is considered CAN active when VCFRONT_chGoToSleep is 0 AND VCFRONT_parkLVState is LV_ON.

Autopark and Summon functions may be unavailable, or their performance may be affected.

EPBR_a101_PM_MIA

One or more of the messages the vehicle controller receives periodically from the Pedal Monitor (PM) electronic control unit (ECU) is not received, indicating the PM ECU may be unavailable (MIA).

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

Vehicle speed and power may be limited.

EPBR_a102_PTC_MIA

One or more of the messages the vehicle controller receives periodically from the Positive Temperature Coefficient (PTC) heater electronic control unit (ECU) is not received, indicating the PTC heater ECU may be unavailable (MIA).

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

Thermal management system features depending on PTC heater functionality may be limited or unavailable.

EPBR_a080_BCFDM_MIA

One or more expected Controller Area Network (CAN) messages from the Body Controller - Front Driver Door (BCFDM) electronic control unit (ECU) was not received. The front driver side door may not function as expected.

An expected CAN message from the Body Controller - Front Driver Door (BCFDM) electronic control unit (ECU) has not been received within the expected timeout, or the message drop rate is too high while the BCFDM is CAN active. The BCFDM is considered CAN active when VCFRONT_vehGoToSleep is 0.

The front driver side door may not function as expected.

EPBR_a103_CP_MIA

One or more of the messages the vehicle controller receives periodically from the charge port (CP) electronic control unit (ECU) is not received, indicating the CP ECU may be unavailable (MIA).

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

Charging may not start or may be interrupted unexpectedly.

EPBR_a081_APP_MIA

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

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

Vehicle may be unable to shift between drive modes.

EPBR_a059_inputResistanceHigh

A large voltage drop is detected in the input power to the vehicle controller, indicating the resistance on the input power feed to the vehicle controller is higher than expected.

Estimated resistance on the input power feed to the vehicle controller is higher than expected.

The vehicle controller may be unavailable due to lack of adequate input power, limiting vehicle functionality or making the vehicle inoperable, with at least one other alert specific to that condition present.

EPBR_a057_HVP_MIA

One or more of the expected messages the electronic control unit (ECU) receives periodically from the high voltage processor (HVP) ECU is not received, indicating the HVP may be unavailable (MIA).

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

Vehicle may be unable to drive. Charging may be limited or unavailable.

EPBR_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

EPBR_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

EPBR_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

EPBR_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

EPBR_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

EPBR_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

EPBR_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.

EPBR_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

EPBR_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

EPBR_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

Alerts

Alerts