Service procedures
12V Reset
Power cycles all of the eFuses on the Vehicle Front Controller (VCFRONT) and shuts off Sleep Bypass.
PROC_VCFRONT_X_12V-RESET
Model 3 / Y
Service procedures
2026 firmware
Start Thermal Fluid Fill and Drain
Gen3/tasks/PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN
What this task does
Starts the Thermal Fluid Fill and Thermal Fluid Drain procedures. Runs for up to 5 hours, monitoring status.
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, Pre-2024 Model 3
- Supported connection
- Local connection
- Vehicle state
- Stationary · Parked
- Gateway diagnostic level
- No specific level listed
Task inputs (2)
Coolant Fill
coolant_fill · Int
If set to 1, the coolant fill procedure will be run. If set to 0, the coolant fill procedure will not be run.
Firmware default: 1
Refrigerant Fill
refrigerant_fill · Int
If set to 1, the refrigerant fill procedure will be run. If set to 0, the refrigerant fill procedure will not be run.
Firmware default: 1
Model 3 / Y Intel · Firmware 2026.32.7
- Vehicle coverage
- Model Y, Pre-2024 Model 3
- Supported connection
- Local connection
- Vehicle state
- Stationary · Parked
- Gateway diagnostic level
- No specific level listed
Task inputs (2)
Coolant Fill
coolant_fill · Int
If set to 1, the coolant fill procedure will be run. If set to 0, the coolant fill procedure will not be run.
Firmware default: 1
Refrigerant Fill
refrigerant_fill · Int
If set to 1, the refrigerant fill procedure will be run. If set to 0, the refrigerant fill procedure will not be run.
Firmware default: 1
Model S / X (2021+) AMD · Firmware 2026.20.6.1
- Vehicle coverage
- 2021+ Model S, 2021+ Model X
- Supported connection
- Local connection
- Vehicle state
- Stationary · Parked
- Gateway diagnostic level
- No specific level listed
Task inputs (2)
Coolant Fill
coolant_fill · Int
If set to 1, the coolant fill procedure will be run. If set to 0, the coolant fill procedure will not be run.
Firmware default: 1
Refrigerant Fill
refrigerant_fill · Int
If set to 1, the refrigerant fill procedure will be run. If set to 0, the refrigerant fill procedure will not be run.
Firmware default: 1
Related service tasks
Browse all tasks →
Self-tests
Active Louver Self Test
Performs louver connection check. Will only move the louver through partial range of motion.
TEST-SELF_VCFRONT_X_ACTIVE-LOUVER
Model 3 / Y
Service procedures
Allow High Beam Enablement in Factory Mode
Allows high beams to be enabled in Factory Mode until the Front Vehicle Controller (VCFRONT) ECU is power cycled.
PROC_VCFRONT_X_ALLOW-HIGH-BEAMS-FACTORY
Model S / X (2021+)
Self-tests
Ambient Sensor Test
Tests for power, connection, and communication of the ambient sensor controlled by the Front Vehicle Controller (VCFRONT).
TEST-SELF_VCFRONT_X_AMBIENT-TEMP
Model 3 / Y
Model S / X (2021+)