Toyota and Lexus Firmware 89663-0P060-A

89663-0P060-A is a Toyota or Lexus calibration identifier associated with the engine control software part-number family. Engine control software governs functions such as fuel delivery and ignition timing, which affect how the engine runs.

The related catalog entry 89663-0P060 shares the base identifier. The available catalog information does not establish the exact vehicle application, the meaning of the -A suffix, or what this particular revision changes.