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Communication checks 2026 firmware

Propulsion Monitor Rear Left CAN Communication

Coriander/tasks/PING-TP_PMREL

Model S / X (2021+)

What this task does

Tests communication with the Propulsion Monitor Rear Left (PMREL) Electronic Control Unit (ECU). Communication is established via Unified Diagnostics Services (UDS) over the Controller Area Network (CAN).

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 · Parked
Gateway diagnostic level
No specific level listed

Task inputs (0)

No user inputs are listed in this firmware.

Related service tasks

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Service procedures

Drive Inverter Rear Left (DIREL) - Restore Bootloader Data After Replacement

Restores the Drive Inverter Rear Left (DIREL) bootloader data from the most recent backup on the car computer and configures the Usage ID after a DIREL replacement. Run this routine only after a new compatible drive inverter is installed. After successfully completing, this procedure fails if run multiple times.

PROC_PMREL_X_LEGACY-RESTORE-ENTRYPOINT

Model S / X (2021+)