Toyota Highlander 3.3 2004 89663-48760 MOD E2 iv.bin Firmware
Catalog details for Toyota Highlander 3.3 2004 firmware 89663-48760, including the MOD E2 iv variant label.
89663-48760 belongs to Toyota’s engine control calibration number family. The associated catalog filename identifies a modified firmware file for a 2004 Toyota Highlander 3.3: RX330Toyota Highlander 3.3 2004 89663-48760 MOD E2 iv.bin.
An engine control module uses calibration data to manage engine operation, including fuel delivery and ignition timing. The number identifies the calibration family entry, but it does not by itself establish the changes made in this particular file.
What the variant label means
The filename marks this file as MOD E2 iv, indicating a modified variant rather than a file explicitly labeled stock. The abbreviation does not reliably identify a specific change or its effect on driving. Although the filename also mentions RX330, it does not establish that the file is interchangeable between the Lexus RX 330 and Toyota Highlander.