SW#89663-04260-A MOD_E2.bin: Toyota ECU Calibration
A catalog reference for Toyota firmware SW#89663-04260-A MOD_E2.bin and its 89663-04260 calibration family.
SW#89663-04260-A MOD_E2.bin is listed as a modified Toyota ECU calibration file in the 89663-04260 software family. The 89663 numbering family is associated with engine control software, which manages functions such as fuel delivery and ignition as part of vehicle operation. The exact vehicle application and changes in this file are not established by the catalog identifier alone.
What the filename identifies
89663-04260 is the related calibration identifier, while SW#89663-04260-A MOD_E2.bin names a specific binary file. The MOD label indicates a modified variant rather than an explicitly stock file. The suffix E2 is part of that variant label, but it does not reliably identify a particular feature or modification.
The engine control software family provides context for the file, not proof of what this particular revision changes. Vehicle fitment and the modified behavior would need to be established from matching calibration or service information.