Toyota 4Runner 4.7 2UZ-FE Firmware 89663-35412

89663-35412 is a Toyota engine control calibration identifier cataloged for a 4WD 4Runner with the 4.7-liter 2UZ-FE V8. It belongs to the engine control module software family, which manages engine operation using sensor inputs to control functions such as fuel delivery and ignition timing.

What this calibration controls

The engine control module adjusts fuel and ignition commands as operating conditions change. These controls affect how the V8 starts, runs and responds to the accelerator. The catalog association identifies the vehicle and engine configuration, but it does not establish a specific drivability change or service update for this calibration.

The filename 4Runner 4.7 2UZFE 4WD 89663-35412.bin identifies a binary firmware file. No stock or modified variant label is associated with this entry, so the identifier alone does not establish whether the file contains changes from a factory calibration.