Toyota and Lexus Firmware 8966350B6201.bin

8966350B6201.bin is associated with Toyota’s 89663 calibration-number family, which is commonly used for engine control module software. The family’s association with engine control is tentative for this specific file.

An engine control module manages functions such as fuel injection and ignition timing using inputs from engine and vehicle sensors. The identifier alone does not establish the vehicle application or identify a particular change made by this calibration.