Toyota 89983-48071 Highlander Hybrid Calibration
A catalog reference for Toyota 89983-48071 and its full calibration ID in Highlander service records.
Toyota firmware 89983-48071 appears in service records under the full calibration identifier 899834807100. Toyota bulletin EG030-07 lists it as a previous calibration in a record covering the 2006 and 2007 Highlander Hybrid. The available record does not identify the control module or the specific behavior addressed by the bulletin.
How the calibration appears in service records
A second record, T-TCI-2777, also lists 899834807100 as a previous calibration and names the 2006 and 2007 Toyota Highlander. Those model listings describe the bulletins’ scope, rather than establishing exact fitment for every vehicle in the range.
The previous-calibration designation means this identifier was listed before a revision discussed in each bulletin. It does not establish what the revision changed or attribute an improvement to 89983-48071 itself.