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.