Toyota 89983-48092 Hybrid Calibration
A catalog reference for Toyota calibration 89983-48092 and its association with Highlander hybrid service records.
Toyota 89983-48092 is associated with hybrid vehicle control calibration 899834809200. The complete identifier appears as a previous calibration in Toyota service records covering the 2006 Highlander Hybrid and, in some bulletins, the 2007 model.
Role in the Highlander hybrid system
The hybrid vehicle control system coordinates operation of the gasoline engine and electric drive components. Its software helps manage how those components work together as driving conditions and power demands change. The calibration identifier identifies a particular software version within that control system.
Toyota bulletin EG030-07 lists 899834809200 as a previous calibration. Earlier records T-TCI-2777 and T-TCI-2656 also list it in that role. Any improvement described by those bulletins belongs to the updated calibration discussed in each bulletin, rather than being a feature established for this previous version.
The model years named in a bulletin describe its overall scope. They do not, on their own, establish that 89983-48092 is the correct calibration for every vehicle in that scope.