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
Diagnostic tests
2026 firmware
Coolant Air Purge
Gen3/tasks/TEST_VCFRONT2_X_THERMAL-COOLANT-AIR-PURGE-START
What this task does
Starts the Coolant Purge Routine by running all pumps at maximum speed and changing valve positions. The routine will run for several minutes and will return a PASS if the routine started successfully. Vehicle must be in PARK gear and gateway unlocked.
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 · Drive; Stationary · Neutral; Stationary · Parked; Stationary · Reverse
- Gateway diagnostic level
- No specific level listed
Procedure notes
In order to prevent pump air lock, do not allow coolant level to dip below MIN mark.
Task inputs (0)
No user inputs are listed in this firmware.
Model 3 / Y Intel · Firmware 2026.32.7
- Vehicle coverage
- Model Y
- Supported connection
- Local connection
- Vehicle state
- Stationary · Drive; Stationary · Neutral; Stationary · Parked; Stationary · Reverse
- Gateway diagnostic level
- No specific level listed
Procedure notes
In order to prevent pump air lock, do not allow coolant level to dip below MIN mark.
Task inputs (0)
No user inputs are listed in this firmware.
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