Toyota and Lexus Firmware 89665-24231
A catalog reference for Toyota and Lexus calibration 89665-24231 and its engine-control module part-number family.
89665-24231 is a Toyota or Lexus engine-control calibration identifier in the 89665 part-number family. This family is associated with engine control module software, though the exact vehicle application and calibration function cannot be established from the identifier alone.
Engine-control context
An engine control module manages operating functions such as fuel delivery and ignition timing using sensor inputs and programmed calibration data. The identifier alone does not establish which of those functions, if any, changed in this particular revision.
The complete calibration ID matters when comparing service or catalog records. A similar 89665 number does not by itself establish the same application or software behavior.