Toyota and Lexus Firmware 89663-FAE80
A catalog reference for Toyota and Lexus firmware identifier 89663-FAE80 and its calibration-number family.
89663-FAE80 is a Toyota calibration identifier in the 89663 part-number family, which is associated with engine control module software. That association is tentative for this specific identifier because its exact application is not established here.
An engine control module manages engine operation using sensor inputs and calibrated settings. The identifier alone does not establish which vehicle uses this calibration or what changes this particular software revision makes.