Toyota Firmware 89663-37472: Calibration Catalog Reference
A concise catalog reference for Toyota firmware identifier 89663-37472 and its 89663 calibration part-number family.
89663-37472 is a Toyota calibration identifier in the 89663 part-number family, which is generally associated with electronic control unit software. The complete identifier distinguishes this calibration from other records in the same family.
The identifier alone does not establish the exact vehicle application, control module or operating changes for this revision. A matching vehicle and controller record is needed to describe its function more specifically.