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Self-tests 2026 firmware

Left Front Seat Components Self-Test

Gen3/tasks/TEST-SELF_VCLEFT_FRONT_SEAT-NO-LUMBAR-NO-OCCUPANCY-SWITCH

Model 3 / Y

What this task does

Tests the left front seat track, lift, tilt, and backrest motors, seat heatpad, heatpad thermistor, seatbelt buckle switch, and the backrest, track, and lift switches. This routine measures current draw, detects encoder movement, and verifies communication with the Local Interconnect Network (LIN) to confirm the components are operating as expected. This routine does not test the lumbar components or occupancy switch.

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
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
No specific level listed

Procedure notes

The left front seat may move. If it does, the left front seatback will tilt forward, the seat cushion will briefly raise, and the seat will move forward on the seat tracks. Then, all the seat will return to its original position.

Task inputs (0)

No user inputs are listed in this firmware.

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Tests the connection between VCLEFT and the different rear left seat endpoints.

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Holds the blower stopped, performs high frequency voltage injection, detects blower type, and sets blower type over LIN

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Model 3 / Y