Toyota and Lexus Firmware 89663-3A230

89663-3A230 is a Toyota or Lexus firmware identifier in the 89663 calibration number family. The complete identifier distinguishes this entry from other calibrations with similar prefixes.

The 89663 family is generally associated with engine or powertrain control software, which manages functions such as fuel delivery and ignition. That association is tentative for this exact identifier. Its vehicle application, specific control function and revision changes are not established by the identifier alone.