Toyota 89663-42T10 Firmware for the 2019 RAV4
A catalog reference for Toyota RAV4 firmware 89663-42T10 and its updated calibration identifier, 8966342T1000.
89663-42T10 is a Toyota calibration listed for the 2019 RAV4. Toyota service records identify the full calibration ID 8966342T1000 as an updated calibration. The related catalog file is named 89663-42T10.bin.
The 89663 part-number family is associated with engine control software, but the available records do not establish the exact controller or function addressed by this calibration. An engine-control association is therefore tentative rather than a confirmed description of what this revision changes.
Service record context
Toyota lists 8966342T1000 as updated in service bulletins T-SB-0107-19 and T-TCI-5267. Both records name the 2019 RAV4. The available record details do not identify the bulletin topics, so they do not support attributing a particular driving improvement or repair to this calibration.
The catalog filename carries no separate stock or modified variant label. The calibration identifier provides a more specific reference than the shorter part number when comparing a vehicle's recorded software with service documentation.