Self-tests
Ambient Sensor Test
Tests for power, connection, and communication of the ambient sensor controlled by the Front Vehicle Controller (VCFRONT2).
TEST-SELF_VCFRONT2_X_AMBIENT-TEMP
Model 3 / Y
Service procedures
2026 firmware
Start HV Battery Discharge
Gen3/tasks/PROC_VCFRONT2_X_HV-DISCHARGE-START
What this task does
Starts discharging the High Voltage (HV) battery by producing waste heat in the Drive Units and rejecting that heat out the radiator. Automatically stops when the HV Battery State of Charge (SOC) max reaches the user-selected target SOC.
Vehicle & firmware coverage
Open a version to see its description, requirements, and input definitions. Hardware configuration and live vehicle checks also determine availability.
Model 3 / Y AMD · Firmware 2026.32.3
- Vehicle coverage
- 2024+ Model 3, 2025+ Model Y, Model Y
- Supported connection
- Local connection
- Vehicle state
- Stationary · Parked
- Gateway diagnostic level
- Factory, DiagLinkActive, Service
Procedure notes
Pumps, fans, and Drive Unit(s) will start making noise to produce and expel heat.
Task inputs (2)
Default Target SOC Max
default_target_soc · String
Select the default target SOC max. Otherwise, select MANUAL_INPUT and enter the desired target SOC max below.
Firmware default: 30_PERCENT
Options: 30_PERCENT, 50_PERCENT, MANUAL_INPUT
Manual Input Target SOC Max
manual_target_soc · Int
If MANUAL_INPUT selected, enter the desired target SOC max.
Firmware default: 25
Model 3 / Y Intel · Firmware 2026.32.7
- Vehicle coverage
- Model Y
- Supported connection
- Local connection
- Vehicle state
- Stationary · Parked
- Gateway diagnostic level
- Factory, DiagLinkActive, Service
Procedure notes
Pumps, fans, and Drive Unit(s) will start making noise to produce and expel heat.
Task inputs (2)
Default Target SOC Max
default_target_soc · String
Select the default target SOC max. Otherwise, select MANUAL_INPUT and enter the desired target SOC max below.
Firmware default: 30_PERCENT
Options: 30_PERCENT, 50_PERCENT, MANUAL_INPUT
Manual Input Target SOC Max
manual_target_soc · Int
If MANUAL_INPUT selected, enter the desired target SOC max.
Firmware default: 25
Related service tasks
Browse all tasks →
Self-tests
Battery Coolant Pump Test
Tests for power, connection, and communication of the battery coolant pump controlled by the Front Vehicle Controller (VCFRONT2).
TEST-SELF_VCFRONT2_X_COOLANT-PUMP-BATTERY
Model 3 / Y
Service procedures
Clear left headlamp latched faults in factory
Clear all left headlamp factory latched faults that were triggering leftHeadlampFactoryFault alert
PROC_VCFRONT2_X_CLEAR-HEADLAMP-LATCHED-FACTORY-FAULTS
Model 3 / Y
Service procedures
Coolant - Start Thermal Fluid Fill and Drain
Starts the Thermal Fluid Fill and Thermal Fluid Drain procedures. Returns result when routine is started, but runs for up to 50 minutes.
PROC_VCFRONT2_X_START-THERMAL-FILL-DRAIN-COOLANT
Model 3 / Y