Toyota and Lexus Firmware 89663-48W10
Catalog information for Toyota and Lexus calibration 89663-48W10 and its possible engine-control module family.
89663-48W10 is a Toyota or Lexus calibration identifier associated tentatively with the engine-control module software family. Engine-control software manages functions such as fuel delivery, ignition timing and emissions-related operation, but the exact vehicle application and behavior of this calibration are not established by the identifier alone.
The complete identifier distinguishes this entry from other calibrations in the 89663 part-number family. It does not, by itself, establish a particular revision change, modified feature or vehicle compatibility.