Toyota and Lexus Firmware 89663-60G10

89663-60G10 is a Toyota or Lexus electronic control calibration identifier. The related catalog entry 89663-60G10-A retains the complete identifier and adds an -A suffix.

The identifiers alone do not establish which vehicle system the calibration controls, its exact application, or whether the suffix denotes a stock or modified variant. The related entry is therefore best treated as a catalog distinction rather than evidence of a particular software change.