Toyota 89665-04011 Tacoma Engine Control Calibration

Toyota 89665-04011 is an engine control module calibration listed in service records for the 2016–2017 Tacoma. Its full calibration identifier is 896650401100. The ECM uses its programmed calibration to manage engine operation, including fuel delivery and ignition timing, as operating conditions change.

That control affects how the engine responds to the accelerator and runs under different loads. The calibration identifier identifies a software version, while the ECM is the controller that runs it. The available records identify the controller family but do not establish the specific changes introduced by 89665-04011 itself.

Place in Tacoma service records

Toyota lists 896650401100 as a previous calibration in service bulletins T-SB-0077-16 and T-SB-0125-18, and in T-TCI-4419. The records cover 2016 and 2017 Tacoma models, with the ECM explicitly identified in T-SB-0077-16 and T-TCI-4419.

A previous-calibration listing means the identifier was eligible for consideration under the relevant bulletin. It does not mean that this calibration introduced the improvement described by a bulletin. Any such improvement belongs to the updated revision specified for that service procedure.

The bulletin model years describe each bulletin’s scope, not a guarantee that every 2016 or 2017 Tacoma uses this exact calibration. The full identifier is the useful distinction when comparing an ECM’s software with a service record.