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Self-tests 2026 firmware

Test Battery Coolant Pump Connection

Coriander/tasks/TEST-SELF_VCBATT_X_COOLANT-PUMP-BATTERY

What this task does

Tests if the battery coolant pump is electrically connected and operating as expected. The pump will be activated and the Vehicle Battery Controller (VCBATT) will monitor current feedback to verify proper electrical connection.

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 battery coolant pump will be activated and may make noise.

Task inputs (0)

No user inputs are listed in this firmware.

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Service procedures

12 Volt Battery Reset

Power cycles all of the eFuses on the VCFRONT and VCBATT ECUs and shuts off Sleep Bypass.

PROC_VCBATT_X_12V-RESET

Model S / X (2021+)
Service procedures

Clear left headlamp latched faults in factory

Clear all left headlamp factory latched faults that were triggering leftHeadlampFactoryFault alert

PROC_VCBATT_X_CLEAR-LEFT-HEADLAMP-LATCHED-FACTORY-FAULTS

Model S / X (2021+)