NHTSA ID Number: 11014209
Manufacturer Communication Number: T-SB-0015-25
TSB/Document Date: 2025-02-12
Summary
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.
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Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVi*
PART NUMBER
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
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.
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool*
DCA-8000P T
1
*Essential SST.
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).
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Page 7 of 26
Replacement ECU Software Configure Process
Operation Procedure
Procedure A: Standard ECU Configuration (CUW Reprogramming)
1. AFTER ECU replacement, connect GTS+, select the applicable vehicle and options,
and select Next.
Figure 1.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Page 8 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure A: Standard ECU Configuration (CUW Reprogramming) (continued)
2. 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.
Figure 2.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Page 9 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure A: Standard ECU Configuration (CUW Reprogramming) (continued)
3. 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.
Figure 3.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Page 10 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure A: Standard ECU Configuration (CUW Reprogramming) (continued)
4. GTS+ will identify the necessary calibration file required. Press Next to start the file download
and continue to step 5.
Figure 4.
NOTE
Selecting output will create a text file listing the required CUW files at the file path below.
Figure 5.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure A: Standard ECU Configuration (CUW Reprogramming) (continued)
5. Select OK to proceed to the login screen.
Figure 6.
© 2025 Toyota Motor Sales, USA
Page 11 of 26
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure A: Standard ECU Configuration (CUW Reprogramming) (continued)
6. Input your TIS password and select LOG IN.
Figure 7.
© 2025 Toyota Motor Sales, USA
Page 12 of 26
T-SB-0015-25
January 29, 2025
Page 13 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure A: Standard ECU Configuration (CUW Reprogramming) (continued)
7. The required calibration has been downloaded, press Next to begin reprogramming the ECU.
Figure 8.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Page 14 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure A: Standard ECU Configuration (CUW Reprogramming) (continued)
8. Refer to Service Bulletin No. T-SB-0107-20, ECU Flash Reprogramming With Security
Signature, and complete the programming as instructed there.
Figure 9.
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.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only)
The following procedure covers Brake and Body ECUs ONLY.
1. AFTER ECU replacement, connect GTS+ to the vehicle and select Next.
Figure 10.
© 2025 Toyota Motor Sales, USA
Page 15 of 26
T-SB-0015-25
January 29, 2025
Page 16 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
2. 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.
Figure 11.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
3. Perform IG OFF first then IG ON, and press Next to proceed.
Figure 12.
© 2025 Toyota Motor Sales, USA
Page 17 of 26
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
4. Press Next to continue to Vehicle Configuration Value writing process.
Figure 13.
© 2025 Toyota Motor Sales, USA
Page 18 of 26
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
5. Press Next to begin Vehicle Configuration Value writing process.
Figure 14.
© 2025 Toyota Motor Sales, USA
Page 19 of 26
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
6. Once writing is complete, press Next to continue.
Figure 15.
© 2025 Toyota Motor Sales, USA
Page 20 of 26
T-SB-0015-25
January 29, 2025
Page 21 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
7. After the Vehicle Configuration Value writing is complete, updated vehicle information
will be sent to the server. Press Next to send vehicle information.
Figure 16.
© 2025 Toyota Motor Sales, USA
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
8. Select OK to proceed to the login screen.
Figure 17.
© 2025 Toyota Motor Sales, USA
Page 22 of 26
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
9. Input your TIS password and select LOG IN.
Figure 18.
© 2025 Toyota Motor Sales, USA
Page 23 of 26
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
10. Select Scan again to perform a follow-up Health Check.
Figure 19.
© 2025 Toyota Motor Sales, USA
Page 24 of 26
T-SB-0015-25
January 29, 2025
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
11. Press Yes to perform a Health Check on ALL ECUs.
Figure 20.
© 2025 Toyota Motor Sales, USA
Page 25 of 26
T-SB-0015-25
January 29, 2025
Page 26 of 26
Replacement ECU Software Configure Process
Operation Procedure (continued)
Procedure B: ECU Configuration Value Writing (Body and Brake ECU Only) (continued)
12. 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.
Figure 21.
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.
© 2025 Toyota Motor Sales, USA
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TSB/Document ID: T-SB-0015-25
Replacement Service Bulletin Number:
MFR Communication Date: 2025-01-29
MFR Internal Campaign ID/Software Version: T-SB-0015-25
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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