Toyota and Lexus SW#89663-30650-A MOD_E2.bin Firmware
A catalog reference for Toyota and Lexus calibration 89663-30650 and its MOD_E2 firmware variant.
SW#89663-30650-A MOD_E2.bin is a modified firmware file associated with Toyota and Lexus calibration identifier 89663-30650. The 89663 part-number family is commonly associated with engine control module software, so this entry is tentatively an engine ECU calibration.
An engine ECU uses calibration data to govern functions such as fuel delivery, ignition timing and emissions controls. The catalog identifier alone does not establish which of those functions this particular file changes or which vehicle it fits.
What the MOD_E2 label indicates
The MOD_E2 suffix identifies the file as a modified variant. It does not, by itself, reliably establish what “E2” means or describe the modification. The related catalog entry 89663-30650 identifies the calibration family without specifying a stock or modified variant.