Toyota Firmware 89536-33190: 2AR-FE Transmission Calibration

Toyota calibration 89536-33190 is a previous calibration for the transmission control module (TCM) and engine control module (ECM) on 2AR-FE-equipped Camry models. Toyota service bulletin T-SB-0287-10, released October 13, 2010, identifies this calibration for the 2010 and 2011 Toyota Camry. The bulletin classifies it as the previous calibration, so the identifier marks the software state addressed by that service update rather than the revised calibration itself.

How the calibration relates to vehicle operation

The TCM manages automatic-transmission operation, including gear selection and shift timing. The ECM controls engine operation and supplies information used in coordinated powertrain management. Together, these modules affect how the car responds to acceleration and how smoothly and consistently it changes gears.

Because Toyota lists both modules for this calibration, 89536-33190 should be understood as part of a coordinated powertrain calibration record, not as evidence of a standalone engine tune or a transmission part. In practical diagnosis, the calibration identifier helps technicians establish which software version is present when investigating a concern addressed by the bulletin.

What the bulletin establishes

T-SB-0287-10 is the relevant service record for this ID. Its classification of 89536-33190 as previous means any correction or improvement described by the bulletin belongs to the later calibration discussed there. It would be inaccurate to attribute that updated behavior to 89536-33190 itself. The record associates the ID with 2010 and 2011 Camrys using the 2AR-FE engine, but that application should be kept within the bulletin’s stated scope.

The number is therefore useful as a software-identification reference during powertrain service. It distinguishes the earlier TCM/ECM calibration from the revision covered by Toyota’s bulletin and helps place a vehicle’s control software in the context of the documented service action.