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The service task reference · 2026

Tesla service tasks.

Find the procedure. Understand what it does. Explore diagnostic tests and repair tasks you can run with Tesware on compatible vehicles.

1,357

service tasks

2026 firmware

Model 3, Y, S & X

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1,357 tasks Showing 697–720

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Diagnostic tests

List Syslogs

The test lists TAI64 logs from oldest to newest, up to the number specified by the numFiles input. This may be useful for determining which log files are the most recent. This task does not provide details such as last-modified date. For that info, use the 'List Directory Contents' task. Log files other than 'current' are TAI64-encoded and have names like @400000005c420bfd0f4ec12c.s

TEST-BASH_ICE_X_LIST-SYSLOGS

Model S / X (legacy)
Diagnostic tests

List USB Test

This verifies all the internal USB devices are connected and running.

TEST-BASH_CID_X_LIST-USB

Model S / X (legacy)
Diagnostic tests

List USB Test

This verifies all the internal USB devices are connected and running.

TEST-BASH_CID_X_LIST-USB

Model S / X (legacy)
Service procedures

Louver Calibration

Performs the louver calibration routine. Will move louver through full range of motion.

PROC_VCBATT2_X_LOUVER-CALIBRATION

Model 3 / Y
Service procedures

Louver Calibration

Performs the louver calibration routine.

PROC_VCFRONT_X_LOUVER-CALIBRATION

Model 3 / Y Model S / X (2021+)
Service procedures

Louver Calibration

Runs the ModelS front louver calibration after actuator replacement. And returns the calibration status of all four louvers.

PROC_THC_X_LOUVER-CALIBRATION

Model S / X (legacy)
Self-tests

Louver Connection Self Test

Performs louver connection check. Will only move the louver through partial range of motion.

TEST-SELF_VCBATT2_X_LOUVER-CONNECTION

Model 3 / Y
Self-tests

Louver Connection Self Test

Performs louver connection check. Will only move the louver through partial range of motion.

TEST-SELF_VCFRONT_X_LOUVER-CONNECTION

Model 3 / Y Model S / X (2021+)
Communication checks

Low Voltage Battery Vehicle Controller (VCBATT) CAN Communication

Tests communication with the low voltage battery vehicle controller (VCBATT) Electronic Control Unit (ECU). Communication is established via Unified Diagnostics Services (UDS) over the Controller Area Network (CAN).

PING-TP_VCBATT_ALL

Model 3 / Y
Service procedures

LR Door Handle Calibration

Calibrate Left Rear door handle by actuating the fork to its maximum and minimum positions. Also configure the door handle controller to make it learn its location, if needed.

PROC_VCLEFT_REAR-L_CALIBRATE-DOOR-HANDLE

Model S / X (2021+)
Self-tests

LR Door Self Test

Tests for power, connection, and communication of the rear left door controlled by the Left Vehicle Controller (VCLEFT).

TEST-SELF_VCLEFT_REAR-L_DOOR

Model 3 / Y Model S / X (2021+)
Diagnostic tests

LTE E-UICC ID Check

LTE E-UICC ID Check

TEST-BASH_ICE_X_EUICC

Model 3 / Y Model S / X (2021+)
Self-tests

LV Protections Self Test

Performs a series of self-tests of the low voltage protections

TEST-SELF_VCBATT1_X_LV-PROTECTIONS

Model 3 / Y
Self-tests

LVBMS connection test

Tests for power, connection, and communication of the Low Voltage Battery Management System (LVBMS) controlled by the Front Vehicle Controller (VCFRONT).

TEST-SELF_VCFRONT_X_LVBMS

Model 3 / Y Model S / X (2021+)
Service procedures

LVBMS Reconnect LV Battery

Reconnects the Low Voltage Battery MOSFET on Model S and X platforms.

PROC_VCBATT_X_RECONNECT-LV-BATTERY

Model S / X (2021+)
Service procedures

LVBMS Reconnect LV Battery

Reconnects the Low Voltage Battery MOSFET on Model 3 and Y platforms.

PROC_VCBATT1_X_RECONNECT-LV-BATTERY

Model 3 / Y
Service procedures

LVBMS Reconnect LV Battery

Reconnects the Low Voltage (LV) Battery's MOSFET.

PROC_VCFRONT_X_RECONNECT-LV-BATTERY

Model 3 / Y
Service procedures

Manage Screenshots

Optionally lists / deletes all screenshots, or downloads / deletes a specified screenshot from car's file system

PROC_CID_X_MANAGE-SCREENSHOTS

Model 3 / Y Model S / X (legacy) Model S / X (2021+)
Diagnostic tests

Mando IDB Valve test

This routine confirms correct operation of the IDB pump motor and solenoid valves.

TEST-BRAKE_IDB-VALVE-TEST

Model 3 / Y
Diagnostic tests

Mando RCU Valve test

This routine confirms correct operation of the RCU pump motor and solenoid valves. For a dry or partially filled RCU, this test is also a viable repair method.

TEST-BRAKE_RCU-VALVE-TEST

Model 3 / Y
Diagnostic tests

Map Version Check

This test checks the vehicle map version against the expected version for the vehicle's country.

TEST_CID_X_MAP-VERSION

Model S / X (legacy)

About this reference

Descriptions and input definitions come from Tesla’s 2026 vehicle firmware. This catalog includes tasks covered by Tesware’s current service access. Each task page lists the vehicle and firmware versions in which it was found. The connected vehicle confirms whether a task can run.

  • Model 3 / Y · AMD · firmware 2026.32.3
  • Model 3 / Y · Intel · firmware 2026.32.7
  • Model S / X (legacy) · Legacy infotainment · firmware 2026.14.6
  • Model S / X (2021+) · AMD · firmware 2026.20.6.1

Cybertruck is not included in this 2026 reference.