MyTeslaMate App

Signal Name	Description	Condition	Impact
EPASTS_a140_imcmConfigurationErr	This alert is reported in case of an Inter-MCU configuration mismatch between two ECU side.	EPAS detected configuration mismatch between two ECU side.	EPAS full loss of assist.
EPASTS_a139_osehAdditionalOsErr	This alert is reported when at startup, before reporting the previous error with the reset reaction, ErrorHook was called again because of an error in a partition which is configured to handle such errors with immediate safety reset. This error ID will show the last problem which caused the invocation of the ErrorHook with reset as the partition reaction.	ErrorHook was called again because of an error in a partition which is configured to handle such errors with immediate safety reset.	EPAS reset.
EPASTS_a138_osehAdditionalErrWithoutImmReset	This alert is reported by the OsErrorHandler_R12(OSEH) component when before reporting the previous error, ErrorHook was called again because of an error in a partition which is configured to handle such errors without requesting immediate safety reset.	If any OS service returns a StatusType value other value than E_OK. Reported if while processing OS error occurred in QM partition one more OS error is detected.	EPAS reset.
EPASTS_a137_osehErrWithoutImmediateReset	This alert is reported by the OsErrorHandler_R12(OSEH) component when ErrorHook was called because of an error in a partition which is configured to handle such errors without requesting immediate safety reset.	If any OS service returns a StatusType value other value than E_OK. Reported if OS error occurred in QM partition. It's a reversible error that is reported upon detection of OS error and immediately cleared to catch and indicate further errors	EPAS reset.
EPASTS_a136_ftElectricalAngleQf	This alert is reported by the FrequencyTransformer_R12 (FT) component when the electrical angle QoS is Substitute Value or Error and RotorPositionAge tolerance time elapsed. This diagnostic compares the 2 local RPSs, and compares the local RPSs and the remote one. If no RPS is available or it is not decidable which RPS is usable, it signals this.	Electrical angle QoS is Substitute Value or Error and RotorPositionAge tolarence time elapsed.	Unreliable absolute steering position provision qualifier. Virtual End Lock deactivation.
EPASTS_a135_tmpsfetjCalculationOverflowErr	This alert is reported by the TemperatureModelPSFETJunction (TMPSFETJ) components when checking overflow of possible values of estimated temperatures. Possible values are calculated according to defined data constraints.	Overflow of possible values of estimated temperatures.	EPAS uses not reliable estimations for temperature.
EPASTS_a134_osehGuardedResetAfterErrWithoutReset	This alert is reported by the OsErrorHandler_R12(OSEH) component when ErrorHook was called because of an error in a partition which is configured to handle such errors with requesting a guarded reset. This error is reported after the guarded reset.	If any OS service returns a StatusType value other value than E_OK. The error is reported after a guarded reset caused by OS error.	EPAS reset.
EPASTS_a127_exchAdditionalExceptionAfterRst	This alert is reported by the ExceptionHandler_TC3x (EXCH) component when exception with reset before the previous similar error was reported. The alert is reported after reset if several exceptions in ASIL D partition were caught before reset.	EPAS application component ExceptionHandler detected additional exceptions in ASIL D partition after a reset.	EPAS reset
EPASTS_a124_mcusscMbistEccTransientErr	This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the memory Built-In-SelfTest failed, MCU failure.	EPAS memory BIST transient error detected.	EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
EPASTS_a123_imcmCommErr	This alert is reported when there is a Inter-MCU comm failure or other side is not communicating (UV or other failure).	The signal is unavailable because checksum error, or the signal is unavailable because Alive counter error, or Timeout (no frame arrived), or Frame size is out of range.	EPAS A and B sides are not able to communicate. Steering assist reduced or might be unavailable.
EPASTS_a155_sdsmDataInvalidAll	This alert is reported by the StreamingDataStorageManager_R12 (SDSM) component when the CRC is not equal to saved CRC value in all memory blocks.	EPAS streaming data storage manager component detects CRC failure and restoration was not possible.	EPAS fast restart was not possible.
EPASTS_a122_pcpBridgeFetShort	This alert is reported by the PhaseCurrentProvider_R12 (PCP) component if both primary and secondary current measurement channels are in saturation state and the debounce counter reaches its limit. If both current measurement channels are saturated, we assume that there is a shorted FET in the bridge. This diagnostic signals it.	EPAS bridge FET short failure. Primary and secondary current measurement channels are in saturation state for longer than a tolerated time.	EPAS full loss of assist
EPASTS_a120_mcusscFlashEccLatentErr	This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.	EPAS has detected flashed SW data integrity failure (ECC) but the number of faults didn't reached the tolerated limits.	EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
EPASTS_a119_mcusscFlashEccCriticalErr	This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.	EPAS has detected flashed SW data integrity failure (ECC) number of faults reached the tolerated limits.	EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
EPASTS_a118_mcusscFlashCsErrorErr	This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure. Calculated CRC not matching stored CRC.	EPAS has detected flashed SW data integrity failure (CRC).	EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
EPASTS_a117_mrccStartupRegCsErrorTransientErr	This alert is reported when there is a transient CRC failure in register CRC check.	EPAS microcontroller's different registers does not contain the right values before starting the safety functions (CRC doesn't match for the first test fail).	EPAS reset. If reset more than 6 then EPAS fallback to bootloader.
EPASTS_a115_mcusscLbistSingleFail	This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU failure. Logic built-in self-test failed.	EPAS logic built-in self-test failed.	EPAS reset. If reset more than 3 then EPAS full loss of assist.
EPASTS_a114_osehOsErr	This alert is reported by the OsErrorHandler_R12 (OSEH) component at startup after an immediate reset caused by OS error occurred in ASIL D partition. This diagnostic monitors if the OS had sensed some error in its services.	At startup after an immediate reset caused by OS error occurred in ASIL D partition.	EPAS reset
EPASTS_a113_rsthUncorrectableEndToEndBusErr	This alert is reported by the HwResetHandler_TC3x (RSTH) component when there is a MCU internal bus fault.	MCU internal bus fault.	EPAS reset
EPASTS_a112_rsthSafetyFlipflopErr	This alert is reported by the HwResetHandler_TC3x (RSTH) component when there is a failure to correct data error in critical MCU registers.	EPAS Failure to correct data error in critical MCU registers.	EPAS reset

EPASTS_a140_imcmConfigurationErr

This alert is reported in case of an Inter-MCU configuration mismatch between two ECU side.

EPAS detected configuration mismatch between two ECU side.

EPAS full loss of assist.

EPASTS_a139_osehAdditionalOsErr

This alert is reported when at startup, before reporting the previous error with the reset reaction, ErrorHook was called again because of an error in a partition which is configured to handle such errors with immediate safety reset. This error ID will show the last problem which caused the invocation of the ErrorHook with reset as the partition reaction.

ErrorHook was called again because of an error in a partition which is configured to handle such errors with immediate safety reset.

EPAS reset.

EPASTS_a138_osehAdditionalErrWithoutImmReset

This alert is reported by the OsErrorHandler_R12(OSEH) component when before reporting the previous error, ErrorHook was called again because of an error in a partition which is configured to handle such errors without requesting immediate safety reset.

If any OS service returns a StatusType value other value than E_OK. Reported if while processing OS error occurred in QM partition one more OS error is detected.

EPAS reset.

EPASTS_a137_osehErrWithoutImmediateReset

This alert is reported by the OsErrorHandler_R12(OSEH) component when ErrorHook was called because of an error in a partition which is configured to handle such errors without requesting immediate safety reset.

If any OS service returns a StatusType value other value than E_OK. Reported if OS error occurred in QM partition. It's a reversible error that is reported upon detection of OS error and immediately cleared to catch and indicate further errors

EPAS reset.

EPASTS_a136_ftElectricalAngleQf

This alert is reported by the FrequencyTransformer_R12 (FT) component when the electrical angle QoS is Substitute Value or Error and RotorPositionAge tolerance time elapsed. This diagnostic compares the 2 local RPSs, and compares the local RPSs and the remote one. If no RPS is available or it is not decidable which RPS is usable, it signals this.

Electrical angle QoS is Substitute Value or Error and RotorPositionAge tolarence time elapsed.

Unreliable absolute steering position provision qualifier. Virtual End Lock deactivation.

EPASTS_a135_tmpsfetjCalculationOverflowErr

This alert is reported by the TemperatureModelPSFETJunction (TMPSFETJ) components when checking overflow of possible values of estimated temperatures. Possible values are calculated according to defined data constraints.

Overflow of possible values of estimated temperatures.

EPAS uses not reliable estimations for temperature.

EPASTS_a134_osehGuardedResetAfterErrWithoutReset

This alert is reported by the OsErrorHandler_R12(OSEH) component when ErrorHook was called because of an error in a partition which is configured to handle such errors with requesting a guarded reset. This error is reported after the guarded reset.

If any OS service returns a StatusType value other value than E_OK. The error is reported after a guarded reset caused by OS error.

EPAS reset.

EPASTS_a127_exchAdditionalExceptionAfterRst

This alert is reported by the ExceptionHandler_TC3x (EXCH) component when exception with reset before the previous similar error was reported. The alert is reported after reset if several exceptions in ASIL D partition were caught before reset.

EPAS application component ExceptionHandler detected additional exceptions in ASIL D partition after a reset.

EPAS reset

EPASTS_a124_mcusscMbistEccTransientErr

This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the memory Built-In-SelfTest failed, MCU failure.

EPAS memory BIST transient error detected.

EPAS reset. If reset more than 6 then EPAS fallback to bootloader.

EPASTS_a123_imcmCommErr

This alert is reported when there is a Inter-MCU comm failure or other side is not communicating (UV or other failure).

The signal is unavailable because checksum error, or the signal is unavailable because Alive counter error, or Timeout (no frame arrived), or Frame size is out of range.

EPAS A and B sides are not able to communicate. Steering assist reduced or might be unavailable.

EPASTS_a155_sdsmDataInvalidAll

This alert is reported by the StreamingDataStorageManager_R12 (SDSM) component when the CRC is not equal to saved CRC value in all memory blocks.

EPAS streaming data storage manager component detects CRC failure and restoration was not possible.

EPAS fast restart was not possible.

EPASTS_a122_pcpBridgeFetShort

This alert is reported by the PhaseCurrentProvider_R12 (PCP) component if both primary and secondary current measurement channels are in saturation state and the debounce counter reaches its limit. If both current measurement channels are saturated, we assume that there is a shorted FET in the bridge. This diagnostic signals it.

EPAS bridge FET short failure. Primary and secondary current measurement channels are in saturation state for longer than a tolerated time.

EPAS full loss of assist

EPASTS_a120_mcusscFlashEccLatentErr

This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.

EPAS has detected flashed SW data integrity failure (ECC) but the number of faults didn't reached the tolerated limits.

EPAS reset. If reset more than 6 then EPAS fallback to bootloader.

EPASTS_a119_mcusscFlashEccCriticalErr

This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure.

EPAS has detected flashed SW data integrity failure (ECC) number of faults reached the tolerated limits.

EPAS reset. If reset more than 6 then EPAS fallback to bootloader.

EPASTS_a118_mcusscFlashCsErrorErr

This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when the flashed SW is incorrect or flash memory failure. Calculated CRC not matching stored CRC.

EPAS has detected flashed SW data integrity failure (CRC).

EPAS reset. If reset more than 6 then EPAS fallback to bootloader.

EPASTS_a117_mrccStartupRegCsErrorTransientErr

This alert is reported when there is a transient CRC failure in register CRC check.

EPAS microcontroller's different registers does not contain the right values before starting the safety functions (CRC doesn't match for the first test fail).

EPAS reset. If reset more than 6 then EPAS fallback to bootloader.

EPASTS_a115_mcusscLbistSingleFail

This alert is reported by MCUSafetyStartupChecks_TC3x (MCUSSC) component when there is a MCU failure. Logic built-in self-test failed.

EPAS logic built-in self-test failed.

EPAS reset. If reset more than 3 then EPAS full loss of assist.

EPASTS_a114_osehOsErr

This alert is reported by the OsErrorHandler_R12 (OSEH) component at startup after an immediate reset caused by OS error occurred in ASIL D partition. This diagnostic monitors if the OS had sensed some error in its services.

At startup after an immediate reset caused by OS error occurred in ASIL D partition.

EPAS reset

EPASTS_a113_rsthUncorrectableEndToEndBusErr

This alert is reported by the HwResetHandler_TC3x (RSTH) component when there is a MCU internal bus fault.

MCU internal bus fault.

EPAS reset

EPASTS_a112_rsthSafetyFlipflopErr

This alert is reported by the HwResetHandler_TC3x (RSTH) component when there is a failure to correct data error in critical MCU registers.

EPAS Failure to correct data error in critical MCU registers.

EPAS reset

Alerts

Alerts