MyTeslaMate App

Signal Name	Description	Condition	Impact
EPBR_a134_NvOv	Motor negative lead voltage is higher than expected while active.	The negative lead voltage measurement is higher than expected. This could be higher than 0.1 voltages if motor is driven in apply direction, or higher than estimated PWM voltage if driven in the release direction.	Caliper motor or harness may be damaged
EPBR_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.
EPBR_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.
EPBR_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.
EPBR_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
EPBR_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
EPBR_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
EPBR_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
EPB_w017_leftNHalfBridge	EPB_w017_leftNHalfBridge		-
EPB_u009_towModeEnabled	EPB_u009_towModeEnabled		-
EPBR_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
EPBR_a123_Uc	Motor current was lower than expected.	Motor current measurement, with calibration offset subtracted, was lower than 0.25 amps	Caliper could be disconnected or the harness is damaged.
EPBR_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
EPBR_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.
EPBR_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.
EPBR_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.
EPBR_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.
EPBR_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.
EPBR_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.
EPBR_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.

EPBR_a134_NvOv

Motor negative lead voltage is higher than expected while active.

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

Caliper motor or harness may be damaged

EPBR_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.

EPBR_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.

EPBR_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.

EPBR_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

EPBR_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

EPBR_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

EPBR_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

EPB_w017_leftNHalfBridge

-

EPB_u009_towModeEnabled

-

EPBR_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

EPBR_a123_Uc

Motor current was lower than expected.

Motor current measurement, with calibration offset subtracted, was lower than 0.25 amps

Caliper could be disconnected or the harness is damaged.

EPBR_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

EPBR_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.

EPBR_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.

EPBR_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.

EPBR_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.

EPBR_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.

EPBR_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.

EPBR_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.

Alerts

Alerts