Toyota and Lexus Firmware 89663-30564
A catalog reference for Toyota and Lexus calibration 89663-30564 and its likely engine-control module family.
89663-30564 is a Toyota or Lexus calibration identifier in the 89663 part-number family, which is generally associated with engine-control module software. That association is tentative: the identifier alone does not establish the exact vehicle application or the function of this calibration.
An engine-control module manages engine operation using sensor inputs to determine commands such as fuel delivery and ignition timing. Those are general controller functions, not documented changes made by revision 89663-30564.
Identifying the application
The complete calibration identifier helps distinguish this record from other Toyota and Lexus software entries. A vehicle-specific catalog or service record is needed to establish its application, any stock or modified variant, and the behavior associated with this particular revision.