Toyota Prius Firmware 89983-47577
A catalog reference for Toyota Prius calibration 89983-47577 and its association with Toyota service bulletin T-TCI-5019.
89983-47577 is a Toyota firmware identifier associated with the full calibration ID 899834757700. Toyota service bulletin T-TCI-5019, released on November 7, 2019, lists that calibration as an updated version.
The bulletin covers 2016–2019 Toyota Prius models. That range describes the bulletin’s vehicle scope, not confirmed compatibility of this calibration with every Prius in those model years. The available record does not identify the control module or the behavior changed by the update, so a specific function cannot be reliably assigned to this firmware.