MyTeslaMate App

Signal Name	Description	Condition	Impact
BMS_w110_SW_Module_Vsense	The battery management system (BMS) detects that the pack voltage does not match the sum of module voltages.	The BMS detects that the pack voltage does not match the sum of module voltages.	Inability to charge, drive, or support the low voltage (LV) system
BMS_w126_HW_BMS_Blind_Mate	The Complex Programmable Logic Device (CPLD) of the High Voltage (HV) Battery Management System (BMS) detects a blind mate fault bit.	The CPLD of the HV BMS detects a blind mate fault bit. The HVIL is on and HVIL voltage is greater than the blind mate alert threshold. The CPLD and the BMS concurrently detect the HVIL loop through the HV connector on the battery may not be connected.	The HV connector on the battery pack is not connected to the HVIL loop. HVIL behavior may be affected.
BMS_w114_SW_FC_Contactors	The Fast Charge (FC) contactors are not ready for precharge.	The FC contactors are welded or the reported charge port state does not meet the expected state.	The vehicle is temporarily unable to charge.
BMS_w108_HW_BMB_Alarm_Self_Test	The battery management system (BMS) has detected a battery monitoring board (BMB) fails the wake up alarm self test.	The BMS detects an issue with the BMB wake up alarm self-test.	Inability to charge, drive, or support the low voltage (LV) system
BMS_w080_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_w086_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_w089_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_w093_SW_FastChg_Problem	The vehicle has detected a condition preventing fast charging.	A condition that prevents fast charging is present on the vehicle.	The vehicle is unable to fast charge, but AC charging still operates as designed.
BMS_w106_SW_All_Module_Tsense	A battery monitoring board (BMB) detects that both of the thermistors on a module are reporting out-of-bounds temperatures.	A battery monitoring board (BMB) detects that both of the thermistors on a module are reporting out-of-bounds temperatures.	Inability to charge, drive, or support the low voltage (LV) system
BMS_w094_SW_Drive_Inverter_MIA	The battery management system (BMS) does not receive one or more expected controller area network (CAN) messages from the drive inverter (DI) and has reported it as missing (MIA).	The BMS has not received one or more expected CAN messages from the DI.	Power is reduced.
BMS_w096_SW_Fast_Charger_MIA	The Battery Management System (BMS) does not receive messages from the external fast charge equipment.	The BMS does not receive one or more required signals from the external fast charge equipment.	The vehicle is unable to fast charge, but AC charging still operates as designed.
BMS_w107_SW_Cell_Voltage_Sensor	The battery management system (BMS) detects a brick voltage measurement that is inaccurate.	A brick reports an inaccurate voltage measurement to the BMS. Alert log signal data provides information on the specific inconsistency.	Inability to charge, drive, or support the low voltage (LV) system
BMS_w061_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_w059_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_w056_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_w054_SW_Current_Sensor	The battery management system (BMS) detects an issue with the high voltage (HV) internal current sensor.	The measured current is sufficiently far from zero with contactors open, the current sensor is reporting the same current for too many samples in a row, or the current sensor is behaving irrationally (for example, it is dropping packets).	Inability to charge, drive, or support the low voltage (LV) system
BMS_w052_SW_Charger_MIA	The battery management system (BMS) cannot communicate with the master charger and has reported it as missing (MIA).	The BMS is not receiving one or more CAN communication messages from the master charger when expected.	Inability to charge.
BMS_w050_SW_BMB_MIA	The battery management system (BMS) is not receiving communication from a battery monitoring board (BMB), indicating that the BMB may be unavailable (MIA).	The BMS does not receive one or more of the expected voltage or temperature sensor readings from a BMB.	Inability to charge, drive, or support the low voltage (LV) system
BMS_w051_SW_Current_Sensor_MIA	The battery management system (BMS) cannot communicate with the high voltage (HV) battery internal current sensor and has reported it as missing (MIA).	The BMS is not receiving one or more communication messages from the internal current sensor/shunt when expected.	Inability to charge, drive, or support the low voltage (LV) system
BMS_w047_SW_Memory_Error	This alert indicates potential corruption in the battery management system (BMS) board flash memory or RAM.	The BMS detects an issue with the board flash memory or RAM.	Inability to charge, drive, or support the low voltage (LV) system

BMS_w110_SW_Module_Vsense

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

The BMS detects that the pack voltage does not match the sum of module voltages.

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

BMS_w126_HW_BMS_Blind_Mate

The Complex Programmable Logic Device (CPLD) of the High Voltage (HV) Battery Management System (BMS) detects a blind mate fault bit.

The CPLD of the HV BMS detects a blind mate fault bit. The HVIL is on and HVIL voltage is greater than the blind mate alert threshold. The CPLD and the BMS concurrently detect the HVIL loop through the HV connector on the battery may not be connected.

The HV connector on the battery pack is not connected to the HVIL loop. HVIL behavior may be affected.

BMS_w114_SW_FC_Contactors

The Fast Charge (FC) contactors are not ready for precharge.

The FC contactors are welded or the reported charge port state does not meet the expected state.

The vehicle is temporarily unable to charge.

BMS_w108_HW_BMB_Alarm_Self_Test

The battery management system (BMS) has detected a battery monitoring board (BMB) fails the wake up alarm self test.

The BMS detects an issue with the BMB wake up alarm self-test.

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

BMS_w080_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_w086_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_w089_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_w093_SW_FastChg_Problem

The vehicle has detected a condition preventing fast charging.

A condition that prevents fast charging is present on the vehicle.

The vehicle is unable to fast charge, but AC charging still operates as designed.

BMS_w106_SW_All_Module_Tsense

A battery monitoring board (BMB) detects that both of the thermistors on a module are reporting out-of-bounds temperatures.

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

BMS_w094_SW_Drive_Inverter_MIA

The battery management system (BMS) does not receive one or more expected controller area network (CAN) messages from the drive inverter (DI) and has reported it as missing (MIA).

The BMS has not received one or more expected CAN messages from the DI.

Power is reduced.

BMS_w096_SW_Fast_Charger_MIA

The Battery Management System (BMS) does not receive messages from the external fast charge equipment.

The BMS does not receive one or more required signals from the external fast charge equipment.

The vehicle is unable to fast charge, but AC charging still operates as designed.

BMS_w107_SW_Cell_Voltage_Sensor

The battery management system (BMS) detects a brick voltage measurement that is inaccurate.

A brick reports an inaccurate voltage measurement to the BMS. Alert log signal data provides information on the specific inconsistency.

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

BMS_w061_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_w059_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_w056_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_w054_SW_Current_Sensor

The battery management system (BMS) detects an issue with the high voltage (HV) internal current sensor.

The measured current is sufficiently far from zero with contactors open, the current sensor is reporting the same current for too many samples in a row, or the current sensor is behaving irrationally (for example, it is dropping packets).

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

BMS_w052_SW_Charger_MIA

The battery management system (BMS) cannot communicate with the master charger and has reported it as missing (MIA).

The BMS is not receiving one or more CAN communication messages from the master charger when expected.

Inability to charge.

BMS_w050_SW_BMB_MIA

The battery management system (BMS) is not receiving communication from a battery monitoring board (BMB), indicating that the BMB may be unavailable (MIA).

The BMS does not receive one or more of the expected voltage or temperature sensor readings from a BMB.

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

BMS_w051_SW_Current_Sensor_MIA

The battery management system (BMS) cannot communicate with the high voltage (HV) battery internal current sensor and has reported it as missing (MIA).

The BMS is not receiving one or more communication messages from the internal current sensor/shunt when expected.

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

BMS_w047_SW_Memory_Error

This alert indicates potential corruption in the battery management system (BMS) board flash memory or RAM.

The BMS detects an issue with the board flash memory or RAM.

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

Alerts

Alerts