Toyota and Lexus Firmware 89663-48R01
A catalog reference for Toyota and Lexus calibration identifier 89663-48R01 and its engine-control software family.
89663-48R01 is a Toyota and Lexus engine-control calibration identifier. The 89663 part-number family is associated with engine control module software, which governs engine operation using sensor inputs and programmed control strategies.
The complete identifier distinguishes this calibration from other entries in the family. Its exact vehicle application and the changes made by this revision are not established by the identifier alone.