Toyota Firmware 89663-F0331: Calibration Catalog Reference
A concise reference to Toyota calibration identifier 89663-F0331 and its place in the 89663 software part-number family.
89663-F0331 is a Toyota calibration identifier in the 89663 software part-number family. That family is associated with electronic control module software, commonly for powertrain control. The exact controller and vehicle application for this complete identifier cannot be established reliably from the part number alone.
What the identifier tells you
A powertrain control module uses software and calibration data to manage vehicle operation, potentially including engine and transmission functions. That is a general description of the controller family, not a confirmed function or change specific to 89663-F0331.
The full identifier matters when comparing calibration records. A similar 89663 prefix does not establish that another entry has the same application, operating behavior or compatibility.