Toyota Firmware 89663-26160: Calibration Catalog Reference
Catalog details for Toyota firmware calibration 89663-26160 and its related 89663-26160-A identifier.
89663-26160 is a Toyota electronic control unit calibration identifier. The 89663 part-number family is associated with ECU software calibrations, but this identifier alone does not reliably establish the exact controller, vehicle application, or function controlled by this revision.
Related catalog identifier
The related entry is 89663-26160-A. Its -A suffix distinguishes the catalog name, but it does not by itself establish whether the file is stock, modified, or associated with a particular operating feature.
The identifier does not document a specific change in vehicle behavior or compatibility with a particular model.