Toyota Firmware 89663-36031
A catalog reference for Toyota firmware 89663-36031 and its control-module identifier.
Toyota firmware 89663-36031 is identified by a calibration-style part number in the 89663 family. That family is associated with electronic control unit software, but the full identifier alone does not reliably establish the vehicle application or the specific system this calibration controls.
The complete number distinguishes this entry from other Toyota and Lexus firmware records. It should not be treated as evidence of a particular engine, transmission, emissions function or software revision without matching catalog or service information.