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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 1129–1152

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Diagnostic tests

Speaker Check

Perform speaker check.

TEST-BASH_CID_X_SPEAKER

Model S / X (legacy)
Service procedures

Speed Limit Override Mode

Overrides the drive unit speed and torque limits set by Factory or Service Mode.

PROC_ICE_X_ENTER-LIMIT-OVERRIDE

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

Start Close Refrigerant Valves routine

Starts the Close Refrigerant Valves routine and returns. The routine will run for up to 5 hours, but the final results are not reported

PROC_VCFRONT2_X_START-CLOSE-REFRIGERANT-VALVES

Model 3 / Y
Service procedures

Start Close Refrigerant Valves routine

Starts the Close Refrigerant Valves routine and returns. The routine will run for up to 5 hours, but the final results are not reported

PROC_VCFRONT_X_START-CLOSE-REFRIGERANT-VALVES

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

Start EPBL Service Mode

Activates Service Mode on the left Electronic Park Break (EPBL).

PROC_EPBL_START-SERVICE-MODE

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

Start EPBR Service Mode

Activates Service Mode on the right Electronic Park Break (EPBR).

PROC_EPBR_START-SERVICE-MODE

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

Start HV Battery Discharge

Starts discharging the High Voltage (HV) battery by producing waste heat in the Drive Units and rejecting that heat out the radiator. Automatically stops when the HV Battery State of Charge (SOC) max reaches the user-selected target SOC.

PROC_VCFRONT2_X_HV-DISCHARGE-START

Model 3 / Y
Service procedures

Start HV Battery Discharge

Starts discharging the High Voltage (HV) battery by producing waste heat in the Drive Units and rejecting that heat out the radiator. Automatically stops when the HV Battery State of Charge (SOC) max reaches the user-selected target SOC.

PROC_VCFRONT_X_HV-DISCHARGE-START

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

Start Thermal Fluid Fill and Drain

Starts the Thermal Fluid Fill and Thermal Fluid Drain procedures. Runs for up to 5 hours, monitoring status.

PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN

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

Start Thermal Fluid Fill/Drain

Starts the Thermal Fluid Fill and Thermal Fluid Drain procedures and runs for up to 5 hours, monitoring status.

PROC_VCFRONT2_X_START-THERMAL-FILL-DRAIN

Model 3 / Y
Service procedures

Start Thermal Fluid Fill/Drain (Coolant only)

Starts the Thermal Fill Drain for coolant only and returns. The routine will run for up to 50 minutes, but the final results are not reported

PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN-COOLANT

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

Start Thermal Fluid Fill/Drain (Refrigerant only)

Starts the Thermal Fill Drain for refrigerant only and returns. The routine will run for up to 50 minutes, but the final results are not reported

PROC_VCFRONT2_X_START-THERMAL-FILL-DRAIN-REFRIGERANT

Model 3 / Y
Service procedures

Start Thermal Fluid Fill/Drain (Refrigerant only)

Starts the Thermal Fill Drain for refrigerant only and returns. The routine will run for up to 50 minutes, but the final results are not reported

PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN-REFRIGERANT

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

Start Thermal System Test

Start thermal system test. It proceeds for 5 minutes.

PROC_THC_X_THERMAL-TEST-START

Model S / X (legacy)
Service procedures

Start Thermal System Test with Precondition

Start thermal system test with precondition. It preconditions if needed, and then proceeds for 5 minutes to run thermal system test.

PROC_THC_X_THERMAL-TEST-START-PRECONDITION

Model S / X (legacy)
Service procedures

Start/Stop HV Battery Discharge

This routine starts or stops discharging the HV Battery. When START is selected, the vehicle will produce waste heat by turning on the climate control system, setting the temperature to HI, and activating Keep Climate On mode. The vehicle will automatically exit the discharge state when the charge level reaches 20%, the STOP operation is selected, or if the climate control system is turned off manually.

PROC_BMS_X_HV-DISCHARGE

Model S / X (legacy)
Service procedures

State of Charge Check Rest of World

Checks the State of Charge (SoC) on the vehicle.

PROC_CID_X_DV-CHARGE-PERCENT-CHECK-ROW

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

Steering Angle Offset Detection Test

This routine checks if the wheel alignment has been disturbed after a suspension repair. Drive the vehicle on a straight road above 30kph/18mph. If the alignment has changed, the routine will indicate that a wheel alignment is required.

TEST-SELF_EPAS_X_STEERING-CENTER-OFFSET-SERVICE

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

Steering Column Calibration

Calibrates the steering column. Sets the zero position of each axis. Determines the number of motor encoder counts it takes to reach the other endpoint of the column's travel.

PROC_STEERING_COLUMN_CALIBRATION

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

Steering Column Calibration

Tests up/down and in/out movement of the steering column by moving the steering column a short distance in each direction.

PROC-VCLEFT_X_STEERING-COLUMN-CALIBRATION

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

Steering Column Self Test

Tests up/down and in/out movement of the steering column by shortly moving the steering column in each direction.

TEST-SELF_VCLEFT_X_STEERING-COLUMN

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

Steering Heater

This is a user verified check to verify function of the steering heater. The user should pass the test if the steering heater is functioning when triggered on.

PROC_CID_X_STEERING-HEATER

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.