MyTeslaMate App

Signal Name	Description	Condition	Impact
EPASTS_a004_scpInputMia	This alert is reported by the StartupCauseProvider_R12 (SCP) component in case, at least one of the possible reset causes is not available after the provision time has elapsed.	EPAS has incomplete list of reset causes at startup.	EPAS has lost info about reset causes.
EPASTS_a003_pspInvalidParamset	This alert is reported by the ParameterSelectorProvider_R12 (PSP) component when Powerpack (PWP), Common (COM), or ECU parameter selection is not successful.	EPAS ECU PowerPack (PWP) ID is not compatible with the given software due to ECU parameter set.	EPAS full loss of assist.
EPASTS_a002_adcMuxErr	This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) multiplexer testing failed, the root cause also can be reference problems or short-to-GND/short-to-supply type pin errors.	Measured REF voltage or Measured GND voltage are out of range.	EPAS full loss of assist.
EPASTS_a001_adcCalibrationOrInitFail	This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) calibration cannot be started, timeout reached. MCU failure.	EPAS uC peripheral ADC self calibration timeout at startup.	EPAS full loss of assist. EPAS ADC is considered inoperable.
EPASTP_a270_oscillationCompTrqLimReached	This alert is reported by the Oscillation Compensation component when the filtered maximum motor torque is greater than a threshold for a certain amount of time.	Filtered maximum motor torque is greater than a set threshold [Calibratable] for a tolerated time.	EPAS is not able to provide Active Oscillation Compensation torque.
EPASTP_a267_safeSpeedAssist	This alert is reported by the AssistActivationDeactivation_T222 (AAD) component when safe vehicle speed assist applied on Electronic Power Assist Steering (EPAS).	EPAS vehicle speed signal is not reliable or available (CRC/Counter/MIA error on DI_speed message or DI_VelocityEstimatorState message is received with VE_STATE_NOT_INITIALIZED or VE_STATE_BACKUP_MOTOR)	EPAS steering features remain enabled using safe speed. External angle control is inhibited. Steering features include: Friction Manager, Freezing Detection and Retention, Active Damping, Assist Limiter and Position Limiter, Column Torque Controller, Controlled Return (or Active Return), Controlled Stickiness Compensation, Lane Departure Warning, Oscillation Compensation (this feature is currently tuned out) , Pull Drift Compensation, Soft Catch Up Emulation, Steering Support, Virtual End-Lock
EPASTP_a266_overloadProtect	This alert is reported by the MotorRestrictionMonitor_T222 (MRM) component when due to sustained torque, output torque is limited. This corresponds to the Curb Damage Protection feature and the max available torque is degraded when there is a high torque and low motor angle speed.	EPAS curb damage protection degradation factor is less than 60% [Calibratable].	EPAS assist torque is limited.
EPASTP_a264_assistTorqueLimited	This alert is reported by the MotorRestrictionMonitor_T222 (MRM) component when Internal faults/errors are preventing EPAS to produce its full torque capability. This alert is reported when the power ratio (actual power divided by nominal power) is less than 60% [Calibratable].	EPAS power ratio (actual power divided by nominal power) is less than 60% [Calibratable].	EPAS assist torque is limited.
EPASTP_a260_scoPrivateBusOff	This alert is reported by the SystemConditionObserver_T222 (SCO) component when the private bus-off state is detected. Inter MCU Communication (IMC) problem.	EPAS Inter MCU Communication health status is faulty.	EPAS master/silent decision.
EPASTP_a258_pspInvalidProjectParamset	This alert is reported by the ParameterSelectorProvider_T222 (PSP) component when the SYS (System) or STF (Steering Feel) related parameters selection is not successful.	SYS (System) or STF (Steering Feel) related parameters selection is not successful.	EPAS full loss of assist.
EPASTP_a257_dcvmUnderVolt	This alert is reported by the DCVoltageMonitor_T222 (DCVM) component when underVoltage is detected.	EPAS has detected supply undervoltage (less than 9v [Calibratable]).	Assist is disabled.
EPASTP_a256_dcvmOverVolt	This alert is reported by the DCVoltageMonitor_T222 (DCVM) component when overVoltage is detected.	EPAS has detected supply overvoltage (higher than 18v [calibratable]).	Assist is disabled.
EPASTP_a251_uiTuneReqMia	The Electric Power Assist Steering (EPAS) electronic control unit (ECU) is not receiving the expected controller area network (CAN) messages from the Gateway (GTW) on the CAN bus.	The Electronic Power Assist Steering (EPAS) ECU does not receive the expected CAN messages from the Gateway on the CAN bus.	Steering assist may be reduced or may not function as expected.
EPASTP_a245_rcmMia	The Electric Power Assist Steering (EPAS) electronic control unit (ECU) is not receiving the expected controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.	The Electronic Power Assist Steering (EPAS) ECU does not receive the expected CAN messages from the RCM on the CAN bus.	Steering assist may be reduced or may not function as expected. Since External Angle Control (EAC) requests may be rejected, Autopilot features may be unavailable or may not function as expected.
EPASTP_a243_rcmCntError	The Electronic Power Assist Steering (EPAS) electronic control unit (ECU) receives invalid controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.	The Electronic Power Assist Steering (EPAS) ECU receives invalid CAN messages from the RCM on the CAN bus.	Steering assist may be reduced or may not function as expected.
EPASTP_a244_rcmCsError	The Electronic Power Assist Steering (EPAS) electronic control unit (ECU) receives invalid controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.	The Electronic Power Assist Steering (EPAS) ECU receives invalid CAN messages from the RCM on the CAN bus.	Steering assist may be reduced or may not function as expected.
EPASTP_a217_msdMasterSilentErr	This alert is reported by the MasterSilentDecition_T222 (MSD) component if there is a problem with the master-silent decision, i.e. both sides are master or both sides are silent.	EPAS master-silent decision failure leading to a master or silent on both sides at the same time.	Both EPAS primary and secondary can be master or silent.
EPASTP_a216_isdgImproperShutdown	This alert is reported by the ImproperShutdownDetector_Generic (ISDG) component if improper shutdown is detected.	EPAS detected a Improper shutdown.	No impact.
EPASTP_a215_vsgSafeViolErr	This alert is reported by the VibrationSignalGenerator_R12 (VSG) compobebt if a safety check for the vibration signal (lane keeping warning) torque request fails.	Torque request of the lane departure warning violates one of the safety-related requirements.	EPAS Lane departure warning is disabled.
EPASTP_a214_velInterfaceErr	This alert is reported by the VirtualEndLock_R12 (VEL) component if there is a problem with one of the necessary inputs of the virtual end-lock.	EPAS virtual end-lock failure due to unavailability of necessary inputs.	Virtual end-lock inhibited.

EPASTS_a004_scpInputMia

This alert is reported by the StartupCauseProvider_R12 (SCP) component in case, at least one of the possible reset causes is not available after the provision time has elapsed.

EPAS has incomplete list of reset causes at startup.

EPAS has lost info about reset causes.

EPASTS_a003_pspInvalidParamset

This alert is reported by the ParameterSelectorProvider_R12 (PSP) component when Powerpack (PWP), Common (COM), or ECU parameter selection is not successful.

EPAS ECU PowerPack (PWP) ID is not compatible with the given software due to ECU parameter set.

EPAS full loss of assist.

EPASTS_a002_adcMuxErr

This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) multiplexer testing failed, the root cause also can be reference problems or short-to-GND/short-to-supply type pin errors.

Measured REF voltage or Measured GND voltage are out of range.

EPAS full loss of assist.

EPASTS_a001_adcCalibrationOrInitFail

This alert is reported by the ADCDriverCD_TC3x component when Analog-Digital Converter (ADC) calibration cannot be started, timeout reached. MCU failure.

EPAS uC peripheral ADC self calibration timeout at startup.

EPAS full loss of assist. EPAS ADC is considered inoperable.

EPASTP_a270_oscillationCompTrqLimReached

This alert is reported by the Oscillation Compensation component when the filtered maximum motor torque is greater than a threshold for a certain amount of time.

Filtered maximum motor torque is greater than a set threshold [Calibratable] for a tolerated time.

EPAS is not able to provide Active Oscillation Compensation torque.

EPASTP_a267_safeSpeedAssist

This alert is reported by the AssistActivationDeactivation_T222 (AAD) component when safe vehicle speed assist applied on Electronic Power Assist Steering (EPAS).

EPAS vehicle speed signal is not reliable or available (CRC/Counter/MIA error on DI_speed message or DI_VelocityEstimatorState message is received with VE_STATE_NOT_INITIALIZED or VE_STATE_BACKUP_MOTOR)

EPAS steering features remain enabled using safe speed. External angle control is inhibited. Steering features include: Friction Manager, Freezing Detection and Retention, Active Damping, Assist Limiter and Position Limiter, Column Torque Controller, Controlled Return (or Active Return), Controlled Stickiness Compensation, Lane Departure Warning, Oscillation Compensation (this feature is currently tuned out) , Pull Drift Compensation, Soft Catch Up Emulation, Steering Support, Virtual End-Lock

EPASTP_a266_overloadProtect

This alert is reported by the MotorRestrictionMonitor_T222 (MRM) component when due to sustained torque, output torque is limited. This corresponds to the Curb Damage Protection feature and the max available torque is degraded when there is a high torque and low motor angle speed.

EPAS curb damage protection degradation factor is less than 60% [Calibratable].

EPAS assist torque is limited.

EPASTP_a264_assistTorqueLimited

This alert is reported by the MotorRestrictionMonitor_T222 (MRM) component when Internal faults/errors are preventing EPAS to produce its full torque capability. This alert is reported when the power ratio (actual power divided by nominal power) is less than 60% [Calibratable].

EPAS power ratio (actual power divided by nominal power) is less than 60% [Calibratable].

EPAS assist torque is limited.

EPASTP_a260_scoPrivateBusOff

This alert is reported by the SystemConditionObserver_T222 (SCO) component when the private bus-off state is detected. Inter MCU Communication (IMC) problem.

EPAS Inter MCU Communication health status is faulty.

EPAS master/silent decision.

EPASTP_a258_pspInvalidProjectParamset

This alert is reported by the ParameterSelectorProvider_T222 (PSP) component when the SYS (System) or STF (Steering Feel) related parameters selection is not successful.

SYS (System) or STF (Steering Feel) related parameters selection is not successful.

EPAS full loss of assist.

EPASTP_a257_dcvmUnderVolt

This alert is reported by the DCVoltageMonitor_T222 (DCVM) component when underVoltage is detected.

EPAS has detected supply undervoltage (less than 9v [Calibratable]).

Assist is disabled.

EPASTP_a256_dcvmOverVolt

This alert is reported by the DCVoltageMonitor_T222 (DCVM) component when overVoltage is detected.

EPAS has detected supply overvoltage (higher than 18v [calibratable]).

Assist is disabled.

EPASTP_a251_uiTuneReqMia

The Electric Power Assist Steering (EPAS) electronic control unit (ECU) is not receiving the expected controller area network (CAN) messages from the Gateway (GTW) on the CAN bus.

The Electronic Power Assist Steering (EPAS) ECU does not receive the expected CAN messages from the Gateway on the CAN bus.

Steering assist may be reduced or may not function as expected.

EPASTP_a245_rcmMia

The Electric Power Assist Steering (EPAS) electronic control unit (ECU) is not receiving the expected controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.

The Electronic Power Assist Steering (EPAS) ECU does not receive the expected CAN messages from the RCM on the CAN bus.

Steering assist may be reduced or may not function as expected. Since External Angle Control (EAC) requests may be rejected, Autopilot features may be unavailable or may not function as expected.

EPASTP_a243_rcmCntError

The Electronic Power Assist Steering (EPAS) electronic control unit (ECU) receives invalid controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.

The Electronic Power Assist Steering (EPAS) ECU receives invalid CAN messages from the RCM on the CAN bus.

Steering assist may be reduced or may not function as expected.

EPASTP_a244_rcmCsError

The Electronic Power Assist Steering (EPAS) electronic control unit (ECU) receives invalid controller area network (CAN) messages from the Restraint Control Module (RCM) on the CAN bus.

The Electronic Power Assist Steering (EPAS) ECU receives invalid CAN messages from the RCM on the CAN bus.

Steering assist may be reduced or may not function as expected.

EPASTP_a217_msdMasterSilentErr

This alert is reported by the MasterSilentDecition_T222 (MSD) component if there is a problem with the master-silent decision, i.e. both sides are master or both sides are silent.

EPAS master-silent decision failure leading to a master or silent on both sides at the same time.

Both EPAS primary and secondary can be master or silent.

EPASTP_a216_isdgImproperShutdown

This alert is reported by the ImproperShutdownDetector_Generic (ISDG) component if improper shutdown is detected.

EPAS detected a Improper shutdown.

No impact.

EPASTP_a215_vsgSafeViolErr

This alert is reported by the VibrationSignalGenerator_R12 (VSG) compobebt if a safety check for the vibration signal (lane keeping warning) torque request fails.

Torque request of the lane departure warning violates one of the safety-related requirements.

EPAS Lane departure warning is disabled.

EPASTP_a214_velInterfaceErr

This alert is reported by the VirtualEndLock_R12 (VEL) component if there is a problem with one of the necessary inputs of the virtual end-lock.

EPAS virtual end-lock failure due to unavailability of necessary inputs.

Virtual end-lock inhibited.

Alerts

Alerts