Toyota Firmware 89663-0F144
A catalog reference for Toyota calibration identifier 89663-0F144 and its 89663 software part-number family.
89663-0F144 is a Toyota calibration identifier in the 89663 software part-number family, generally associated with engine control module software. That association is tentative for this exact identifier because its vehicle application and specific software function are not established here.
Engine control software manages operating decisions such as fuel delivery and ignition timing using signals from the engine and related sensors. The identifier alone does not establish which of those functions, if any, changed in calibration 89663-0F144.