Toyota 89665-08111 Engine Control Module Calibration
Learn about Toyota 89665-08111, an updated engine control module calibration listed in service bulletins for 2017–2018 Highlander and Sienna vehicles.
Toyota 89665-08111 is an engine control module (ECM) calibration identified in Toyota service records by the full calibration ID 896650811100. The ECM controls engine operation using sensor inputs to manage functions such as fuel delivery and ignition timing. Its calibration determines how the controller responds under different operating conditions.
Service bulletin context
Toyota lists 896650811100 as an updated calibration in service bulletins T-SB-0001-18 and T-TCI-5072. The bulletins cover certain 2017 and 2018 Toyota Highlander and Sienna vehicles. That multi-vehicle scope does not establish that this specific calibration applies to every vehicle listed.
The service records identify the ECM and the calibration’s updated status, but do not specify the condition addressed or the changes made by this revision. The ECM’s general engine-management role should therefore be distinguished from any particular driving improvement attributed to this calibration.
Identifying the calibration
The shorter identifier 89665-08111 corresponds to the full service-record calibration ID 896650811100. Using the complete ID matters when comparing ECM records, because a similar-looking number can identify a different calibration.