Toyota Firmware 89663-05K40: Calibration Identifier

89663-05K40 is a Toyota-family firmware calibration identifier. It identifies a software record, but the identifier alone does not reliably establish the vehicle, control module, or function it governs.

The complete calibration number is important when comparing records. A similar Toyota or Lexus number does not by itself establish the same application or indicate that the calibrations are interchangeable.