Page organisation in this revision
- Page type
- Technical article
- Subject
- Diagnostics
- Parent
- Section level
- Applies to
- No ECU-specific applicability
- Tool groups
- Not recorded in this older revision
- Manufacturers
- Not recorded in this older revision
Changes from revision 1 to revision 3
Removed text is struck through; added text is highlighted.
Global Techstream+ (GTS+) is diagnostic software named in Toyota and Subaru service publications. Toyota's Techstream installation instructions identify the application as Global Techstream+; a Toyota service bulletin describes ECU reprogramming using GTS+ and its calibration update workflow. Toyota software installation instructions; Toyota GTS+ service bulletin T-SB-0021-25.
Subaru Solterra application
Subaru of America's bulletin 14-30-24R specifies GTS+ for certain Solterra ECU reprogramming jobs. Its 2023 Solterra service guidance also shows GTS+ for a vehicle setting. This demonstrates a shared application on that vehicle, not a claim that all Subaru cars use Toyota software. Use the correct manufacturer's account, software, vehicle interface and service procedure. Subaru Solterra GTS+ reprogramming bulletin; Subaru Solterra service guidance.
See Toyota Techstream diagnostics and Subaru diagnostic systems for their other tool generations. Software, interfaces and authorised accounts are distinct; do not assume a subscription for one marque grants access to another.
Model/year and cross-marque coverageTool selectionDocumented model coverageManufacturer / scopeGTS+Toyota/Lexus tool selection except Proace and new-generation Supra, per Toyota Europe’s guideEurope-market independent user guide; exact VIN and procedure still govern.DiagBoxToyota Proace modelsToyota Europe explicitly lists DiagBox for Proace; this is a model-line exception, not general Toyota coverage. See PSA DiagBox.Toyota ISTANew-generation SupraToyota Europe selects Toyota ISTA; North American Toyota bulletins identify Supra MY2020 onward as a special case. See Toyota ISTA for GR Supra.GTS+ on Subaru2023MY Solterra setting procedure and Solterra ECU reprogramming proceduresSpecific Subaru service examples show shared software use. They do not extend GTS+ coverage to all Subaru models. See Subaru coverage.Sources: Toyota Europe GTS+ guide, page 5; Subaru 2023 Solterra service guidance; Subaru Solterra reprogramming bulletin; Toyota 2025 Supra PDS.Rendered revisions
Open each version to inspect formatting, tables and photographs.
Revision 1: Global Techstream Plus GTS diagnostic system
Global Techstream+ (GTS+) is diagnostic software named in Toyota and Subaru service publications. Toyota's Techstream installation instructions identify the application as Global Techstream+; a Toyota service bulletin describes ECU reprogramming using GTS+ and its calibration update workflow. Toyota software installation instructions; Toyota GTS+ service bulletin T-SB-0021-25.
Subaru Solterra application
Subaru of America's bulletin 14-30-24R specifies GTS+ for certain Solterra ECU reprogramming jobs. Its 2023 Solterra service guidance also shows GTS+ for a vehicle setting. This demonstrates a shared application on that vehicle, not a claim that all Subaru cars use Toyota software. Use the correct manufacturer's account, software, vehicle interface and service procedure. Subaru Solterra GTS+ reprogramming bulletin; Subaru Solterra service guidance.
See Toyota Techstream diagnostics and Subaru diagnostic systems for their other tool generations. Software, interfaces and authorised accounts are distinct; do not assume a subscription for one marque grants access to another.
Revision 3: Global Techstream Plus GTS diagnostic system
Global Techstream+ (GTS+) is diagnostic software named in Toyota and Subaru service publications. Toyota's Techstream installation instructions identify the application as Global Techstream+; a Toyota service bulletin describes ECU reprogramming using GTS+ and its calibration update workflow. Toyota software installation instructions; Toyota GTS+ service bulletin T-SB-0021-25.
Subaru Solterra application
Subaru of America's bulletin 14-30-24R specifies GTS+ for certain Solterra ECU reprogramming jobs. Its 2023 Solterra service guidance also shows GTS+ for a vehicle setting. This demonstrates a shared application on that vehicle, not a claim that all Subaru cars use Toyota software. Use the correct manufacturer's account, software, vehicle interface and service procedure. Subaru Solterra GTS+ reprogramming bulletin; Subaru Solterra service guidance.
See Toyota Techstream diagnostics and Subaru diagnostic systems for their other tool generations. Software, interfaces and authorised accounts are distinct; do not assume a subscription for one marque grants access to another.
Model/year and cross-marque coverage
| Tool selection | Documented model coverage | Manufacturer / scope |
|---|
| GTS+ | Toyota/Lexus tool selection except Proace and new-generation Supra, per Toyota Europe’s guide | Europe-market independent user guide; exact VIN and procedure still govern. |
| DiagBox | Toyota Proace models | Toyota Europe explicitly lists DiagBox for Proace; this is a model-line exception, not general Toyota coverage. See PSA DiagBox. |
| Toyota ISTA | New-generation Supra | Toyota Europe selects Toyota ISTA; North American Toyota bulletins identify Supra MY2020 onward as a special case. See Toyota ISTA for GR Supra. |
| GTS+ on Subaru | 2023MY Solterra setting procedure and Solterra ECU reprogramming procedures | Specific Subaru service examples show shared software use. They do not extend GTS+ coverage to all Subaru models. See Subaru coverage. |
Sources: Toyota Europe GTS+ guide, page 5; Subaru 2023 Solterra service guidance; Subaru Solterra reprogramming bulletin; Toyota 2025 Supra PDS.