Toyota and Lexus Firmware 89663-30S31-_MOD.bin
A catalog reference for Toyota and Lexus firmware 89663-30S31-_MOD.bin and its 89663-30S31 calibration identifier.
89663-30S31-_MOD.bin is a modified firmware file associated with the Toyota and Lexus calibration identifier 89663-30S31. The 89663 part-number family is generally associated with engine control computer software, which manages engine operation and can coordinate with other powertrain systems.
The full identifier does not establish a more specific vehicle application or control function from the available catalog record. The _MOD suffix labels this file as modified, but it does not describe which settings or behaviors were changed. The related entry 89663-30S31 identifies the calibration without specifying whether it is a stock file.