Toyota and Lexus Firmware 89663-60B40-A
A catalog reference for Toyota and Lexus firmware identifier 89663-60B40-A and its related calibration entry.
89663-60B40-A is a Toyota or Lexus firmware identifier related to catalog entry 89663-60B40. The 89663 part-number family is associated with engine control computer calibration data, which governs how the engine control module manages engine operation.
That family association is tentative for this complete identifier. The related catalog name does not identify a vehicle, controller application or software feature, so it does not establish what this particular revision changes or which vehicles it fits.