Denso · petrol · 1999–2026
Toyota ECU 89661-48 xxx — Highlander / Lexus RX engine ECU
The Highlander/RX platform: 89661-48B70 (2008–2010 Highlander 3.5), 89661-48602 and 48C70 (RX350).
Models fitted with 89661-48
Highlander / Highlander Hybrid
XU20 / XU40 / XU50 · 2001–2019
- 2.4 / 2.7 4-cyl · 2AZ-FE, 1AR-FE
- 3.0 / 3.3 / 3.5 V6 · 1MZ-FE, 3MZ-FE, 2GR-FE, 2GR-FKS
- 3.3 / 3.5 hybrid · 3MZ-FE, 2GR-FXE
Lexus RX
XU10 through AL30 · 1999–2026
- 3.0 / 3.3 / 3.5 V6 · 1MZ-FE, 3MZ-FE, 2GR-FE, 2GR-FKS
- 3.3 / 3.5 hybrid (RX400h / RX450h) · 3MZ-FE, 2GR-FXE, 2GR-FXS
Prefix-to-application pairing checked against published parts data on 2026-10-14.
Clone the 89661-48 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 89661-48?
89661-48 is the model code of a Toyota / Lexus / Scion engine control unit in the Highlander / Lexus RX engine ECU family (Denso), common on 1999–2026 petrol cars. The Highlander/RX platform: 89661-48B70 (2008–2010 Highlander 3.5), 89661-48602 and 48C70 (RX350). The rest of the number selects the exact calibration.
Which models use a 89661-48 ECU?
In the US: Highlander / Highlander Hybrid XU20 / XU40 / XU50 (2001–2019); Lexus RX XU10 through AL30 (1999–2026). Always confirm with the label — the same model year can carry a different family on another engine or build.
Can you clone a 89661-48 ECU?
Yes. Mail your original 89661-48 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.