Skip to content

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

Find a service task

1,357 tasks Showing 937–960

Browse by name, A–Z

Service procedures

REAR-LEFT Drive Unit Resolver Error Learning

Calibrate resolver analog input error, required after an inverter swap. Before running routine, verify steering wheel is straight and drive rail is on. After starting routine, follow these steps to complete: 1. With vehicle on lift, shift to gear D within 10 seconds of starting routine, and firmly press accelerator pedal. 2. Keep accelerator pedal pressed until motor starts slowing down on its own. 3. After speedometer reaches 0, press the brake and shift to gear P. Do NOT press brakes during coast down, brake softly if cancelling routine.

PROC_DIREL_X_RESOLVER-ERROR-LEARN

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

REAR-RIGHT Drive Unit Resolver Error Learning

Calibrate resolver analog input error, required after an inverter swap. Before running routine, verify steering wheel is straight and drive rail is on. After starting routine, follow these steps to complete: 1. With vehicle on lift, shift to gear D within 10 seconds of starting routine, and firmly press accelerator pedal. 2. Keep accelerator pedal pressed until motor starts slowing down on its own. 3. After speedometer reaches 0, press the brake and shift to gear P. Do NOT press brakes during coast down, brake softly if cancelling routine.

PROC_DIRER_X_RESOLVER-ERROR-LEARN

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

Record Service Action

Records a new maintenance or repair event for this vehicle, adding to its service history database.

PROC_ICE_X_RECORD-SERVICE-ACTION

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

Redundant Control Unit CAN Communication

Tests communication with the Redundant Control Unit (RCU) Electronic Control Unit (ECU). Communication is established via Unified Diagnostics Services (UDS) over the Controller Area Network (CAN).

PING-TP_RCU

Model 3 / Y
Service procedures

Reformat Gen2 Gateway SD card

Reformat the gen2 gateway sd card and reboot the mcu. Task will not run if display is on or a software update is in progress.

PROC_ICE_X_FORMAT-GTW2-SD

Model S / X (legacy)
Self-tests

Refrigerant Discharge Sensor Test

Tests for power, connection, and communication of the refrigerant discharge sensor controlled by the Front Vehicle Controller (VCFRONT2).

TEST-SELF_VCFRONT2_X_REFRIGERANT-DISCHARGE

Model 3 / Y
Self-tests

Refrigerant Discharge Sensor Test

Tests for power, connection, and communication of the refrigerant discharge sensor controlled by the Front Vehicle Controller (VCFRONT).

TEST-SELF_VCFRONT_X_REFRIGERANT-DISCHARGE

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

Refrigerant EXV Test

Model 3 Non-heat-pump ONLY - Refrigerant EXV Test

TEST-SELF_VCFRONT_X_CHILLER-EXV

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

Refrigerant Liquid Sensor Test

Tests for power, connection, and communication of the refrigerant liquid sensor controlled by the Front Vehicle Controller (VCFRONT2).

TEST-SELF_VCFRONT2_X_REFRIGERANT-LIQUID

Model 3 / Y
Self-tests

Refrigerant Liquid Sensor Test

Tests for power, connection, and communication of the refrigerant liquid sensor controlled by the Front Vehicle Controller (VCFRONT).

TEST-SELF_VCFRONT_X_REFRIGERANT-LIQUID

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

Refrigerant Suction Sensor Test

Tests for power, connection, and communication of the refrigerant suction sensor controlled by the Front Vehicle Controller (VCFRONT2).

TEST-SELF_VCFRONT2_X_REFRIGERANT-SUCTION

Model 3 / Y
Self-tests

Refrigerant Suction Sensor Test

Tests for power, connection, and communication of the refrigerant suction sensor controlled by the Front Vehicle Controller (VCFRONT).

TEST-SELF_VCFRONT_X_REFRIGERANT-SUCTION

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

Remote Key Reset

Resets remote unlock security key on body controller.

PROC_ICE_X_RESET-REMOTE-KEY

Model S / X (legacy)
Service procedures

Repair and Maintenance Information Vitals

Provides RMI (Repair and Maintenance Information) Vitals values, including configuration values, alerts, and data.

PROC_ICE_X_RMI-VITALS

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

Request ACC and Drive Rail Off

Requests the accessory rail and the drive rail to power off.

PROC_CID_X_REQUEST-RAILS-OFF

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

REQUEST ACC POWER

Request accessory power from the vehicle to wake up certain ECU's for a user specified number of seconds.

PROC_ICE_X_REQUEST-ACC-POWER

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

Request HVAC Off

Turn off HVAC, equivalent to touching the power icon on the UI

PROC_ICE_X_REQUEST-HVAC-OFF

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

Request Pack Contactors to Open

Requests the drive rail to power off and the high voltage battery pack contactors to open.

PROC_CID_X_REQUEST-HV-CONTACTORS-OPEN

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

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.