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Self-tests 2026 firmware

Three-Way Coolant Valve Self-Test

Coriander/tasks/TEST-SELF_VCFRONT_X_THREE-WAY-COOLANT-VALVE

Model S / X (2021+)

What this task does

Tests if the three-way coolant valve is electrically connected and if the valve actuator is mechanically operating as expected. This routine checks position sensor voltage, motor current, and valve's ability to reach commanded positions.

Vehicle & firmware coverage

Open a version to see its description, requirements, and input definitions. Hardware configuration and live vehicle checks also determine availability.

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 · Drive; Stationary · Neutral; Stationary · Parked; Stationary · Reverse
Gateway diagnostic level
No specific level listed

Procedure notes

The three-way coolant valve will be activated and moving between different positions, which may make noise.

Task inputs (0)

No user inputs are listed in this firmware.

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