Toyota and Lexus Firmware 89663-48S10
Catalog reference for Toyota and Lexus firmware 89663-48S10 and its engine control calibration family.
89663-48S10 is a Toyota calibration identifier in the 89663 part-number family, which is associated with engine control module software. The engine control module manages functions such as fuel delivery, ignition timing and emissions control using sensor readings and operating conditions.
The exact vehicle application and the changes associated with this calibration cannot be established from the identifier alone. The number identifies a particular calibration, not a complete description of the controller hardware or proof of compatibility with another Toyota or Lexus vehicle.