Denso · petrol · 2000–2026
Toyota ECU 89661-0C xxx — Tundra / Sequoia engine ECU
Tundra and Sequoia: 89661-0C331 (2001–2002), 0C730 (2005–2006), 0C853 (2007 5.7), 0CG43 (2010 tow), 0CM70 (2011–2013), 0CP13 / 0CP45 (2014–2018 tow). Tow-package trucks carry their own number.
Models fitted with 89661-0C
Tundra
First generation · 2000–2006
- 3.4 V6 / 4.0 V6 · 5VZ-FE, 1GR-FE
- 4.7 V8 · 2UZ-FE
Tundra / Sequoia
Second generation · 2007–2021
- 4.0 V6 / 4.6 V8 · 1GR-FE, 1UR-FE
- 4.7 / 5.7 V8 · 2UZ-FE, 3UR-FE, 3UR-FBE
Tundra / Sequoia
Third generation (TNGA-F) · 2022–2026
- 3.4 twin-turbo V6 / i-FORCE MAX hybrid · V35A-FTS
Prefix-to-application pairing checked against published parts data on 2026-10-14.
Clone the 89661-0C 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 89661-0C?
89661-0C is the model code of a Toyota / Lexus / Scion engine control unit in the Tundra / Sequoia engine ECU family (Denso), common on 2000–2026 petrol cars. Tundra and Sequoia: 89661-0C331 (2001–2002), 0C730 (2005–2006), 0C853 (2007 5.7), 0CG43 (2010 tow), 0CM70 (2011–2013), 0CP13 / 0CP45 (2014–2018 tow). Tow-package trucks carry their own number. The rest of the number selects the exact calibration.
Which models use a 89661-0C ECU?
In the US: Tundra First generation (2000–2006); Tundra / Sequoia Second generation (2007–2021); Tundra / Sequoia Third generation (TNGA-F) (2022–2026). Always confirm with the label — the same model year can carry a different family on another engine or build.
Can you clone a 89661-0C ECU?
Yes. Mail your original 89661-0C 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.