Replacement Ecu Software Configure Process (T-SB-0120-20 REV2)
Publication date: 2025-01-29Reference number: T-SB-0120-20 REV2
Supersedes refnos: T-SB-0015-25, T-SB-0120-20
REPLACEMENT ECU SOFTWARE CONFIGURE PROCESS
TECHNICAL SERVICE BULLETIN
Reference Number(s): T-SB-0015-25, Date of Issue:
January 29, 2025
Superceded Bulletin(s): T-SB-0120-20, Date of Issue:
January 29, 2025
| TOYOTA: | 2025 4Runner, 4Runner HV, Camry HV, Crown Signia, Prius PHV; 2024 - 2025 Grand Highlander, Grand Highlander HV, Highlander, Highlander HV, Land Cruiser, Mirai, Tacoma, Tacoma HV; 2023 - 2024 Prius Prime; 2022 - 2025 Tundra, Tundra HV; 2021 - 2024 Venza HV; 2023 - 2025 bZ4X, Corolla, Corolla Cross, Corolla Cross HV, Corolla Hatchback, Corolla HV, Crown, GR Corolla, Prius, Sequoia HV |
| SERVICE CATEGORY: | General |
| SECTION: | Outline-General |
| MARKET: | USA and Mexico |
| COPYRIGHT: | © 2018 Toyota, USA License Agreement TMS1002 |
APPLICABILITY
APPLICABILITY
| YEAR(S) | MODEL(S) | ADDITIONAL INFORMATION |
|---|---|---|
| 2025 | 4Runner, 4Runner HV, Camry HV, Crown Signia, Prius PHV | |
| 2024 - 2025 | Grand Highlander, Grand Highlander HV, Highlander, Highlander HV, Land Cruiser, Mirai, Tacoma, Tacoma HV | |
| 2023 - 2024 | Prius Prime | |
| 2022 - 2025 | Tundra, Tundra HV | |
| 2021 - 2024 | Venza HV | |
| 2023 - 2025 | bZ4X, Corolla, Corolla Cross, Corolla Cross HV, Corolla Hatchback, Corolla HV, Crown, GR Corolla, Prius, Sequoia HV |
SUPERSESSION NOTICE
The information contained in this bulletin supersedes Service Bulletin No. T-SB-0120-20.
- Applicability has been updated to include 2025 model year 4Runner, 4Runner Hybrid, bZ4X, Camry Hybrid, Corolla, Corolla Cross, Corolla Cross Hybrid, Corolla Hatchback, Corolla Hybrid, Crown, Crown Signia, GR Corolla, Grand Highlander, Grand Highlander Hybrid, Highlander, Highlander Hybrid, Land Cruiser, Mirai, Prius, Prius PHV, Sequoia Hybrid, Tacoma, Tacoma Hybrid, Tundra, and Tundra Hybrid vehicles.
- The Introduction section has been updated.
Service Bulletin No. T-SB-0120-20 is obsolete, and any printed versions should be discarded.
INTRODUCTION
Some 2021 - 2025 model year Toyota vehicles may require the download and installation of vehicle specific software or configuration software when the Electronic Control Unit (ECU) is replaced. GTS+ software has been modified to indicate when configuration software is required. A new Configure column has been added to the GTS+ Health Check Results screen to show when configuration software is available for a specific ECU.
Follow the Operation Procedure in this bulletin to complete the ECU Software Configure Process. Certain ECU replacements require CUW reprogramming (Standard ECU Configuration) while others may only require C-Best Writing (ECU Configuration Value Writing). Please select the appropriate procedure below, depending on the ECU replaced.
- Procedure A: Standard ECU Configuration (CUW Reprogramming)
- Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only)
Refer to the applicability chart below for a list of Models and ECUs that will require configuration software when the specified ECU is replaced:
| Year(s) | Model(s) | ECU(s) Requiring Configuration Software |
|---|---|---|
| 2025 | 4Runner | ECM/TCM/Absorber Control/EMPS/ANC/Body |
| bZ4X | HV/Inverter/Brake/Airbag/EMPS/Blindspot/Body/Front Side Radar | |
| Camry HV | ECM/HV/Inverter/EMPS/Blindspot/Body/Airbag/Front Side Radar | |
| Corolla Cross/Corolla Cross HV | HV/Inverter/Airbag/Body | |
| Corolla, Corolla HV, GR Corolla, Corolla Hatchback | ECM/HV/Inverter/EMPS/Body/Power Distribution Box/Airbag/4WD/ANC | |
| Crown | ECM/HV/Inverter/Brake/Airbag/Absorber Control/EMPS/ANC/Blindspot/Body/Front Side Radar | |
| Crown Signia | ECM/HV/Airbag/ANC/EMPS/Blindspot/Body/Front Side Radar | |
| Grand Highlander/Grand Highlander HV | ECM/HV/Inverter/EMPS/ANC/Blindspot/Body/Airbag/Front Side Radar | |
| Highlander/Highlander HV | EMPS/Body | |
| Land Cruiser | ECM/HV/TCM/Airbag/EMPS/ANC/Body/Front Side Radar | |
| Mirai | Front Side Radar/Airbag/Blindspot/Body | |
| Prius/Prius PHV | Airbag/Blindspot/Body/Engine/EMPS/Front Side Radar/HV/Inverter | |
| 2025 | Sequoia HV | TCM/Brake/EMPS/ANC/Airbag/Body/HV |
| Tacoma/Tacoma HV | EMPS/ANC/Body | |
| Tundra/Tundra HV | HV/TCM/Brake/Airbag/EMPS/ANC/Body | |
| 2024 | bZ4X | Airbag/Body/Brake/HV/MG/EMPS/Blindspot/Front Side Radar |
| Corolla, Corolla HV, GR Corolla, Corolla Hatchback | Airbag/Body/EMPS/Engine/HV/Inverter/Power Distribution Box/Body/4WD | |
| Corolla Cross/Corolla Cross HV | Airbag/Body | |
| Crown | Absorber Control/Airbag/ANC/Body/Brake/ECM/EMPS/HV/Inverter/Blindspot/Front Side Radar | |
| Prius/Prius Prime | Airbag/Blindspot/Body/Engine/EMPS/Front Side Radar/HV/Inverter | |
| Sequoia HV | Airbag/ANC/Body/Brake/ECT/EMPS/Engine/HV/TCM/ANC | |
| Tundra/Tundra HV | ANC/Body/Brake/ECT/EMPS/HV/TCM/Airbag | |
| Highlander/Highlander HV | Body/EMPS | |
| Grand Highlander/Grand Highlander HV | ECM/HV/Inverter/TCM/EMPS/ANC/Blindspot/Body/Airbag/Front Side Radar | |
| Land Cruiser | ECM/HV/TCM/Airbag/EMPS/ANC/Body/Front Side Radar | |
| Tacoma/Tacoma HV | EMPS/ANC/Body | |
| Mirai | Front Side Radar/Airbag/Blindspot/Body | |
| 2023 | bZ4X | Airbag/Body/Brake/HV/MG |
| Corolla/Corolla HV/Corolla Hatchback/GR Corolla | Airbag/Body/EMPS/Engine/HV/Inverter/Power Distribution Box | |
| Corolla Cross/Corolla Cross HV | Airbag/Body | |
| Crown | Absorber Control/Airbag/ANC/Body/Brake/ECM/EMPS/HV | |
| Prius/Prius Prime | Airbag/Blindspot/Body/Engine/EMPS/Front Side Radar/HV/Inverter | |
| Sequoia HV | Airbag/ANC/Body/Brake/ECT/EMPS/Engine | |
| 2022 - 2023 | Tundra/Tundra HV | ANC/Body/Brake/ECT/EMPS |
| 2021 - 2024 | Venza HV | Body/EMPS |
NOTE:
ECU is a Toyota term used to describe integrated computerized devices responsible for managing the operation of a system or subsystem. In this bulletin, ECU is used as a generic label for the following SAE J1930 standard references:
- Powertrain Control Module (PCM).
- Engine Control Module (ECM).
- Transmission Control Module (TCM).
- Any other Toyota specific control unit.
WARRANTY INFORMATION
WARRANTY INFORMATION
| OP CODE | DESCRIPTION | TIME | OFP | T1 | T2 |
|---|---|---|---|---|---|
| N/A | Not Applicable to Warranty | - | - | - | - |
REQUIRED TOOLS & EQUIPMENT
REQUIRED TOOLS & EQUIPMENT
| REQUIRED EQUIPMENT | SUPPLIER | PART NUMBER | QTY | ||
|---|---|---|---|---|---|
| Techstream ADVi(1) | ADE | TSADVUNIT | 1 | ||
| Techstream 2.0 | TS2UNIT | ||||
| Techstream Lite | TSLITEPDLR01 | ||||
| Techstream Lite (Green Cable) | TSLP2DLR01 | ||||
|
|||||
NOTE:
- Only ONE of the Techstream units listed above is required.
- GTS+ software version 2024.04.004.02 or later is required.
- Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE) at 1-800-368-6787 (USA) or 01-55-50103041 (Mexico) or by visiting TIS - Diagnostics - Tools & Equipment - Techstream Order Portal .
PARTS INFORMATION
| SPECIAL SERVICE TOOLS (SST) | PART NUMBER | QTY | ||
|---|---|---|---|---|
| Battery Diagnostic Tool(1) | DCA-8000P T | 1 | ||
|
||||
NOTE:
Additional SSTs may be ordered by calling 1-800-368-6787 (USA) or 01-800-504-5330 (Mexico) or by visiting Home - Service Resources - Toyota Special Service Tools (SSTs)
.
OPERATION PROCEDURE
PROCEDURE A: STANDARD ECU CONFIGURATION (CUW REPROGRAMMING)
- AFTER ECU replacement, connect GTS+, select the applicable vehicle and options, and select Next.
- After performing a Health Check, GTS+ will automatically detect the replacement ECU that needs configuration. On the Health Check Results page, select Yes in the Configure column to begin the configuration process.
- If your ECU Configuration requires multiple calibration files, you will be prompted with the screen below. Confirm the calibrations to be downloaded. Then press the Reprogramming Start button to proceed.
If your ECU Configuration does not require multiple calibration files, this screen will not be displayed. Continue to step 4.
- GTS+ will identify the necessary calibration file required. Press Next to start the file download and continue to step 5.NOTE: Selecting output will create a text file listing the required CUW files at the file path below.
- Select OK to proceed to the login screen.
- Input your TIS password and select LOG IN.
- The required calibration has been downloaded, press Next to begin reprogramming the ECU.
- Refer to Service Bulletin No. T-SB-0107-20
, ECU Flash Reprogramming With Security Signature,
and complete the programming as instructed there.NOTE: On some models, DTCs may be set as a result of reprogramming. If DTCs are present, clear them, and run the Health Check again. Troubleshoot ANY remaining current, pending, or history codes. Permanent codes will NOT be cleared using GTS+. Permanent codes do NOT illuminate the MIL and do NOT require troubleshooting. They will clear during normal driving once the Universal Trip Drive Pattern is performed.
PROCEDURE B: ECU CONFIGURATION VALUE WRITING (BODY AND BRAKE ECU ONLY)
The following procedure covers Brake and Body ECUs ONLY.
- AFTER ECU replacement, connect GTS+ to the vehicle and select Next.
- After performing a Health Check, GTS+ will automatically detect the replacement ECU that needs configuration. On the Health Check Results page, select Yes in the Configure column to begin the configuration process.
- Perform IG OFF first then IG ON, and press Next to proceed.
- Press Next to continue to Vehicle Configuration Value writing process.
- Press Next to begin Vehicle Configuration Value writing process.
- Once writing is complete, press Next to continue.
- After the Vehicle Configuration Value writing is complete, updated vehicle information will be sent to the server. Press Next to send vehicle information.
- Select OK to proceed to the login screen.
- Input your TIS password and select LOG IN.
- Select Scan again to perform a follow-up Health Check.
- Press Yes to perform a Health Check on ALL ECUs.
- After performing a Health Check, confirm No is displayed in the Configure column, and DTC and RoB data are cleared for the newly configured ECU.NOTE: On some models, DTCs may be set as a result of reprogramming. If DTCs are present, clear them, and run the Health Check again. Troubleshoot ANY remaining current, pending, or history codes. Permanent codes will NOT be cleared using GTS+. Permanent codes do NOT illuminate the MIL and do NOT require troubleshooting. They will clear during normal driving once the Universal Trip Drive Pattern is performed.