MyTeslaMate App

Signal Name	Description	Condition	Impact
BMS_f137_SW_Brick_UV_Warning	The battery management system (BMS) has detected that there is an over-discharged brick.	The BMS detects that the minimum brick voltage is below the 0% SOC OCV target while fully rested and with the contactors open.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f073_SW_Unexpctd_HV_Sys_Bhvr	The battery management system (BMS) detected abnormal HV bus behavior during precharge.	The BMS detects abnormal HV bus behavior during precharge.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f089_SW_THC_MIA	The battery management system (BMS) reported that the thermal controller (THC) was missing (MIA) on controller area network (CAN).	The BMS has not received the full set of expected messages from the THC for ten times the message period.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f086_SW_Not_Ok_To_Precharge	The battery management system (BMS) has detected an issue that prevents precharging and prevents the pack contactors from closing.	The BMS has detected an issue that prevents precharging. Alert log signal data provides information on the specific condition(s) detected.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f080_SW_Int_HV_Disconnect	The battery management system (BMS) has detected that the high voltage (HV) battery pack voltage differs from the sum of the brick voltages, making the HV battery unavailable for charging, driving, or supporting the low voltage (LV) battery.	The high voltage (HV) battery pack voltage differs from sum of all the brick voltages.	The vehicle is unable to charge or drive. The high voltage (HV) battery cannot support the low voltage (LV) battery.
BMS_f079_SW_Ctr_Pwr_Interrupted	The battery management system (BMS) has detected that the power supply to the contactors was interrupted.	The BMS detects that the power supply to the contactors was interrupted, and the service disconnect of the high voltage battery was removed.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f077_SW_Charger_Regulation	The Battery Management System (BMS) has stopped charging because the max brick voltage within the high voltage (HV) battery exceeds the max brick voltage target value, or the charge current exceeds the target value for too long.	While charging is active, the maximum brick voltage exceeds the target value for too long or the charge current exceeds the target value for too long.	Charging is temporarily unavailable.
BMS_f074_SW_Charging	The battery management system (BMS) has detected an issue with the charger.	The BMS detects an issue with the charger. Alert log signal data provides information on the specific condition(s) detected.	Inability to charge.
BMS_f071_SW_SM_TransCon_Not_Met	The battery management system (BMS) cannot transition into the requested state because of a blocking condition.	A blocking condition does not allow the BMS to transition into the requested state.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f070_SW_Iso_Fast_Flood	The battery management system (BMS) detects a sudden loss of isolation while the vehicle is driving.	DI_possibleLeak=1, and BMS_a035_SW_Isolation or BMS_a142_SW_Isolation_Degradatio is set, and the pack contains a non-hybrid pyro fuse type.	The pack contactors cannot close and the vehicle will not drive.
BMS_f069_SW_Low_Power	The BMS detects that the state of charge (SOC) of the high voltage (HV) battery is too low to support driving.	The BMS detects that the SOC is below the threshold to support driving.	The vehicle begins end-of-drive ramp down.
BMS_f068_SW_Low_SOC	The battery management system (BMS) does not have enough power to provide low voltage (LV) support.	The BMS detects that the high voltage (HV) state of charge (SOC) is too low to support the LV system.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f067_SW_Low_Coolnt_Flow_Rate	The battery management system (BMS) has restricted the power outlet to the high voltage (HV) battery to thermally protect the battery cells due to lack of coolant flow.	The BMS detects that there is a lack of coolant flow in the battery pack.	Power is reduced.
BMS_f065_SW_Brick_Low_Capacity	The battery management system (BMS) has detected that one brick has lower calculated amp-hour capacity (CAC) than the rest of the bricks.	The BMS detects that the brick CAC is below acceptable operational capacity.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f064_SW_BrickV_Imbalance	The battery management system (BMS) has detected there is a brick voltage imbalance.	The BMS has detected that the difference between the maximum brick voltage and the minimum brick voltage in the high voltage (HV) pack is greater than expected.	Power is reduced.
BMS_f063_SW_Precharge_Failure	The battery management system (BMS) has detected an issue during the precharge process, and the pack contactors were unable to close.	The BMS detects an issue during the precharge process. Alert log signal data provides information on the specific condition(s) detected.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f062_SW_Ctr_Pwr_Supply	The battery management system (BMS) has detected that a pack contactor is not getting enough power.	The BMS detects that a pack contactor input voltage dropped below the limit threshold.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f061_SW_BMS_Power_Supply	There is an issue with the power supply to the battery management system (BMS), and the BMS system is operating at an out-of-bounds supply voltage.	The BMS has detected that it is receiving supply voltage outside of the acceptable bounds.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f059_SW_Pack_Voltage_Sensing	The battery management system (BMS) detects that the pack voltage does not match the sum of the brick voltages.	The BMS detects that the HV pack voltage differs from the sum of the brick voltages by more than 3%.	Inability to charge, drive, or support the low voltage (LV) system
BMS_f056_SW_Module_Temp_Outlier	The battery management system (BMS) detects one or more thermistors report that a specific module has an outlier temperature when compared to the other modules. This alert is for logging purposes only.	One or more thermistors report that a specific module has an outlier temperature when compared to the other modules.	This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.

BMS_f137_SW_Brick_UV_Warning

The battery management system (BMS) has detected that there is an over-discharged brick.

The BMS detects that the minimum brick voltage is below the 0% SOC OCV target while fully rested and with the contactors open.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f073_SW_Unexpctd_HV_Sys_Bhvr

The battery management system (BMS) detected abnormal HV bus behavior during precharge.

The BMS detects abnormal HV bus behavior during precharge.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f089_SW_THC_MIA

The battery management system (BMS) reported that the thermal controller (THC) was missing (MIA) on controller area network (CAN).

The BMS has not received the full set of expected messages from the THC for ten times the message period.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f086_SW_Not_Ok_To_Precharge

The battery management system (BMS) has detected an issue that prevents precharging and prevents the pack contactors from closing.

The BMS has detected an issue that prevents precharging. Alert log signal data provides information on the specific condition(s) detected.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f080_SW_Int_HV_Disconnect

The battery management system (BMS) has detected that the high voltage (HV) battery pack voltage differs from the sum of the brick voltages, making the HV battery unavailable for charging, driving, or supporting the low voltage (LV) battery.

The high voltage (HV) battery pack voltage differs from sum of all the brick voltages.

The vehicle is unable to charge or drive. The high voltage (HV) battery cannot support the low voltage (LV) battery.

BMS_f079_SW_Ctr_Pwr_Interrupted

The battery management system (BMS) has detected that the power supply to the contactors was interrupted.

The BMS detects that the power supply to the contactors was interrupted, and the service disconnect of the high voltage battery was removed.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f077_SW_Charger_Regulation

The Battery Management System (BMS) has stopped charging because the max brick voltage within the high voltage (HV) battery exceeds the max brick voltage target value, or the charge current exceeds the target value for too long.

While charging is active, the maximum brick voltage exceeds the target value for too long or the charge current exceeds the target value for too long.

Charging is temporarily unavailable.

BMS_f074_SW_Charging

The battery management system (BMS) has detected an issue with the charger.

The BMS detects an issue with the charger. Alert log signal data provides information on the specific condition(s) detected.

Inability to charge.

BMS_f071_SW_SM_TransCon_Not_Met

The battery management system (BMS) cannot transition into the requested state because of a blocking condition.

A blocking condition does not allow the BMS to transition into the requested state.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f070_SW_Iso_Fast_Flood

The battery management system (BMS) detects a sudden loss of isolation while the vehicle is driving.

DI_possibleLeak=1, and BMS_a035_SW_Isolation or BMS_a142_SW_Isolation_Degradatio is set, and the pack contains a non-hybrid pyro fuse type.

The pack contactors cannot close and the vehicle will not drive.

BMS_f069_SW_Low_Power

The BMS detects that the state of charge (SOC) of the high voltage (HV) battery is too low to support driving.

The BMS detects that the SOC is below the threshold to support driving.

The vehicle begins end-of-drive ramp down.

BMS_f068_SW_Low_SOC

The battery management system (BMS) does not have enough power to provide low voltage (LV) support.

The BMS detects that the high voltage (HV) state of charge (SOC) is too low to support the LV system.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f067_SW_Low_Coolnt_Flow_Rate

The battery management system (BMS) has restricted the power outlet to the high voltage (HV) battery to thermally protect the battery cells due to lack of coolant flow.

The BMS detects that there is a lack of coolant flow in the battery pack.

Power is reduced.

BMS_f065_SW_Brick_Low_Capacity

The battery management system (BMS) has detected that one brick has lower calculated amp-hour capacity (CAC) than the rest of the bricks.

The BMS detects that the brick CAC is below acceptable operational capacity.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f064_SW_BrickV_Imbalance

The battery management system (BMS) has detected there is a brick voltage imbalance.

The BMS has detected that the difference between the maximum brick voltage and the minimum brick voltage in the high voltage (HV) pack is greater than expected.

Power is reduced.

BMS_f063_SW_Precharge_Failure

The battery management system (BMS) has detected an issue during the precharge process, and the pack contactors were unable to close.

The BMS detects an issue during the precharge process. Alert log signal data provides information on the specific condition(s) detected.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f062_SW_Ctr_Pwr_Supply

The battery management system (BMS) has detected that a pack contactor is not getting enough power.

The BMS detects that a pack contactor input voltage dropped below the limit threshold.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f061_SW_BMS_Power_Supply

There is an issue with the power supply to the battery management system (BMS), and the BMS system is operating at an out-of-bounds supply voltage.

The BMS has detected that it is receiving supply voltage outside of the acceptable bounds.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f059_SW_Pack_Voltage_Sensing

The battery management system (BMS) detects that the pack voltage does not match the sum of the brick voltages.

The BMS detects that the HV pack voltage differs from the sum of the brick voltages by more than 3%.

Inability to charge, drive, or support the low voltage (LV) system

BMS_f056_SW_Module_Temp_Outlier

The battery management system (BMS) detects one or more thermistors report that a specific module has an outlier temperature when compared to the other modules. This alert is for logging purposes only.

One or more thermistors report that a specific module has an outlier temperature when compared to the other modules.

This alert is primarily informational and is used for logging purposes. No expected impact on vehicle functionality.

Alerts

Alerts