Toyota and Lexus Firmware 89663-30W10-A

89663-30W10-A is a Toyota or Lexus firmware identifier related to the catalog entry 89663-30W10. The 89663 part-number family is associated with engine control software, so this entry may belong to an engine control module calibration.

An engine control module manages functions such as fuel delivery, ignition timing and emissions control. That general role does not establish what the 89663-30W10-A revision changes, or which vehicle uses it. The available catalog name does not identify a specific application or a stock or modified variant.