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
Five Way Valve Flow Test
Model3/tasks/PROC_VCFRONT_X_THERMAL-FIVE-WAY-VALVE-FLOW-TEST
What this task does
Starts the Thermal Five Way Valve Flow Test. The routine will run for up to 5 minutes.
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 Intel · Firmware 2026.32.7
- Vehicle coverage
- Pre-2024 Model 3
- Supported connection
- Local connection
- Vehicle state
- Stationary · Parked
- Gateway diagnostic level
- Service, Factory, DiagLinkActive
Procedure notes
The vehicle must be in park and disconnected from a charger before starting this test. The battery coolant temperature must be below 45C.
Task inputs (0)
No user inputs are listed in this firmware.
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
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+)
Self-tests
Battery Coolant Pump Test
Tests for power, connection, and communication of the battery coolant pump controlled by the Front Vehicle Controller (VCFRONT).
TEST-SELF_VCFRONT_X_COOLANT-PUMP-BATTERY
Model 3 / Y
Model S / X (2021+)