Toyota and Lexus Firmware 89663-37560
A catalog reference for Toyota and Lexus firmware identifier 89663-37560 and its control-module family.
89663-37560 is a Toyota calibration identifier in the 89663 part-number family, commonly associated with engine control module software. The exact control function and vehicle application for this complete identifier cannot be established reliably from the identifier alone.
An engine control module manages functions such as fuel delivery, ignition timing and emissions control. That general role does not establish what this particular calibration changes or which vehicle it fits.