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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 145–168

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Diagnostic tests

Check A2B Bus Connection

Check that the main A2B Bus that connects all the telephony microphones, and speakers are working

TEST-BASH_SPK_X_A2B-CHECK

Model S / X (2021+)
Diagnostic tests

Check ANC A2B Bus Connection

Check that the ANC A2B Bus that connects all the ANC microphones, accelerometers are working

TEST-BASH_SPK_X_A2B-ANC-CHECK

Model S / X (2021+)
Diagnostic tests

Check Car Status

Create a report of vehicle states such as UI Mode, BMS State, Timezone, and more. This is useful for verifying vehicle state before performing a remote repair.

TEST-BASH_ICE_X_CAR-STATUS

Model S / X (legacy)
Diagnostic tests

Check CID Processes

This test ensures several important processes are running on the CID.

TEST-BASH_CID_X_CHECK-PROCESS

Model S / X (legacy)
Service procedures

Check Continental Ride Height Calibration

Check ride height calibration of the Continental air suspension. Please input the ride height measured at each corner of the vehicle.

PROC_EAS_X_CHECK-RIDE-HEIGHT-CALIBRATION

Model S / X (legacy)
Diagnostic tests

Check Database Integrity

The check databases test checks pragma integrity for all databases and searches for errors.

TEST-BASH_ICE_X_CHECK-DATABASES

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

Check E-fuse Power Off Status

Query the current power-off status for a specific component. Returns the status and remaining timeout for any active power-off request.

PROC_VC_X_STATUS-POWER-OFF-REQUEST

Model 3 / Y
Diagnostic tests

Check File Hash

Computes a hash for a given file to verify file integrity. Can be used for validating newly created navigation maps, images, or system files.

TEST-BASH_ICE_X_CHECK-HASH

Model 3 / Y
Diagnostic tests

Check File Hash

Computes a hash for a given file to verify file integrity. Can be used for validating newly created navigation maps, images, or system files.

TEST-BASH_ICE_X_CHECK-HASH

Model S / X (legacy)
Diagnostic tests

Check Filesystem

Analyze mounted devices, logical volumes, and disk usage.

TEST-BASH_ICE_X_CHECK-SYSTEM

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

Check for available odin patch

Returns the signature of an available odin patch on firmware server if one is released

TEST_ICE_X_ODIN-PATCH-AVAILABLE

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

Check Gen3 Tuner Connection

Check the Tuner Availability/Connection for Hirschmann Gen3 Tuners

TEST_GEN3_TUNER

Model 3 / Y
Service procedures

Check Historical AC Charge

Reads vehicle's total historical AC charge KWh, ensures above threshold

PROC_ICE_X_CHECK-MIN-AC-CHARGE

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

Check Historical DC Charge

Reads vehicle's total historical DC charge KWh, ensures above threshold

PROC_ICE_X_CHECK-MIN-DC-CHARGE

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

Check Home Data

Read the /home filesystem superblock to display information like available inodes and memory blocks. This will provide insight into filesystem-related issues such as insufficient inodes or disk space. The most helpful result is the 'Free Inodes' line which should show a number over 10,000.

TEST-BASH_ICE_X_READ-HOME-PARAMS

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

Check Left Turn Signal Functionality

Checks whether the left turn signal indicator light is on and functioning as expected. This routine monitors CAN to confirm whether the indicator light is turned on.

PROC_VCFRONT_L_SIGNAL-LIGHT-LEFT

Model S / X (legacy)
Diagnostic tests

Check MCU and PWS Speaker Connections

Check the electrical connection between the MCU speakers and check PWS speaker

TEST-BASH_SPK_X_MCU-PWS-CHECK

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

Check MCU Speaker Connections

Tests the electrical connection between the Media Control Unit (MCU) and speakers.

TEST-BASH_SPK_X_MCU-CHECK

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

Check Overhead Map Lights Connection

Tests if the four overhead map lights are electrically connected by measuring current draw when powered. This routine will output current draw statistics for each map light, including threshold, minimum and maximum current, average current, and standard deviation.

TEST-SELF_VCLEFT_OVERHEAD_MAPLIGHTS

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.