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Service procedures 2026 firmware

EPAS Post Replacement Routine

Common/tasks/PROC_EPAS_X_POST-REPLACEMENT

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

What this task does

The procedure runs all required routines after a steering rack replacement.

Vehicle & firmware coverage

Open a version to see its description, requirements, and input definitions. Hardware configuration and live vehicle checks also determine availability.

Model 3 / Y AMD · Firmware 2026.32.3
Vehicle coverage
2024+ Model 3, 2025+ Model Y, Model Y, Pre-2024 Model 3
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
DiagLinkActive, Factory, Service

Task inputs (0)

No user inputs are listed in this firmware.

Model 3 / Y Intel · Firmware 2026.32.7
Vehicle coverage
Model Y, Pre-2024 Model 3
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
DiagLinkActive, Factory, Service

Task inputs (0)

No user inputs are listed in this firmware.

Model S / X (legacy) Legacy infotainment · Firmware 2026.14.6
Vehicle coverage
Pre-2021 Model S, Pre-2021 Model X
Supported connection
Local connection
Vehicle state
Stationary · Parked
Gateway diagnostic level
DiagLinkActive, Factory, Service

Task inputs (0)

No user inputs are listed in this firmware.

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 · Parked
Gateway diagnostic level
DiagLinkActive, Factory, Service

Task inputs (0)

No user inputs are listed in this firmware.

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Bosch EPAS Calibration

Calibrates Bosch Electric Power Assisted Steering (EPAS) by flashing the Electronic Control Unit (ECU), resetting steering soft lock stops, and angle compensation.

PROC_EPAS_X_CALIBRATION

Model S / X (legacy)
Service procedures

Clear EPAS3P and EPAS3S DTCs

Clears Diagnostic Trouble Codes (DTCs) from the electrically assisted power steering (EPAS3P and EPAS3S) electronic control units (ECUs).

PROC_EPAS_X_CLEAR-DTCS

Model 3 / Y
Service procedures

EPAS ESP - Clear Angle Offsets

Clears angle offsets for Electronic Stability Program (ESP) and Electronic Power Assist Steering (EPAS) (including EPAS, EPAS2, and EPAS3x). Clears steering angle offsets for the Drive Inverter (DI). Resets soft lock stops on EPAS.

PROC_EPAS_ESP_CLEAR-ANGLE-OFFSETS

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

EPAS Trim Torsion Bar Torque

Zero EPAS Torque Sensor: ensure vehicle is on lift!

PROC_EPAS_TBT_TRIM-TORSION-BAR-TORQUE

Model 3 / Y