Toyota and Lexus Firmware 89665-30231
A catalog reference for Toyota and Lexus calibration identifier 89665-30231 and its engine control software family.
89665-30231 is a Toyota calibration identifier in the 89665 part-number family, which is associated with engine control computer software. Its exact vehicle application and the changes represented by this calibration cannot be established from the identifier alone.
Engine control software governs functions such as fuel delivery and ignition timing using information from the engine’s sensors. These decisions affect how the engine runs, but the identifier by itself does not establish a particular driving feature or a change from an earlier revision.
Identifying the calibration
The complete code 89665-30231 distinguishes this catalog entry from other Toyota and Lexus calibration numbers. A matching vehicle application or service bulletin would be needed to identify its specific controller, fitment and revision history.