Denso · petrol · 2008–2020
Toyota ECU 89661-12 xxx — Corolla / Scion xB engine ECU
Scion xB 2008–2015 (89661-12N11, 89661-12T90) and the 2019–2020 TNGA Corolla (89661-12Y41). Older Japan-built Corollas carried it too.
Models fitted with 89661-12
Corolla / Corolla iM
E170 · 2014–2019
- 1.8 4-cyl (2ZR-FE / 2ZR-FAE) · 2ZR-FE, 2ZR-FAE
Corolla / Corolla Cross
TNGA (E210) + Corolla Cross · 2020–2026
- 1.8 / 2.0 4-cyl · 2ZR-FAE, M20A-FKS
Scion xB / xD
xB (2004–2015), xD (2008–2014) · 2004–2015
- 2.4 4-cyl (xB 2008–2015) · 2AZ-FE
Prefix-to-application pairing checked against published parts data on 2026-10-14.
Clone the 89661-12 ECU — $350 flat
Mail your original and a donor with the same full part number. VIN, immobilizer data, coding and adaptations are copied across on the bench, typically within 24 hours of arrival. Factory immobilizer stays on.
Toyota / Lexus / Scion engine ECU cloneOn-car software step — remote Techstream, $250
Some cars still want an on-car step after a module swap — an ECU communication ID registration on a smart-key car, a calibration update, or a key registration. Plug a J2534 pass-thru interface into the car and we run the factory Techstream software on it from our bench — no dealer visit. The same session covers programming after any other Toyota or Lexus module replacement.
Book the Toyota / Lexus remote sessionFrequently asked questions
What is Toyota ECU part number 89661-12?
89661-12 is the model code of a Toyota / Lexus / Scion engine control unit in the Corolla / Scion xB engine ECU family (Denso), common on 2008–2020 petrol cars. Scion xB 2008–2015 (89661-12N11, 89661-12T90) and the 2019–2020 TNGA Corolla (89661-12Y41). Older Japan-built Corollas carried it too. The rest of the number selects the exact calibration.
Which models use a 89661-12 ECU?
In the US: Corolla / Corolla iM E170 (2014–2019); Corolla / Corolla Cross TNGA (E210) + Corolla Cross (2020–2026); Scion xB / xD xB (2004–2015), xD (2008–2014) (2004–2015). Always confirm with the label — the same model year can carry a different family on another engine or build.
Can you clone a 89661-12 ECU?
Yes. Mail your original 89661-12 unit and a donor with the same full part number and we copy your VIN, immobilizer data, coding and adaptations onto the donor for $350 flat, typically within 24 hours of arrival, immobilizer intact. If the car then asks for an on-car step, the remote Techstream session over J2534 is $250.