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Here is the detailed description and compatibility for the Toyota / Lexus ECU 89661-50C20, specifically used in Lexus LS460 / LS460L:
Primary OEM: 89661-50C20
Other Part Format: 8966150C20
Manufacturer: DENSO (often paired with a DENSO sub-code on the label)
Engine Control Unit (ECU / ECM / Engine Computer)
The 89661-50C20 is a genuine Engine Control Module (ECU) designed for high-end Toyota/Lexus models, specifically the Lexus LS460 and LS460L. This unit is responsible for managing critical engine functions such as fuel injection, ignition timing, variable valve timing, and emissions systems.
Application: Luxury full-size sedan with advanced engine and drivetrain control
Engine: 4.6L V8 (1UR-FSE)
Transmission Type: 8-speed Automatic (AWR10LS)
Condition: OEM / Used
Programming Required: ✅ Yes — Must be programmed to the vehicle’s VIN and immobilizer system
Make | Model | Year Range | Engine | Notes |
---|---|---|---|---|
Lexus | LS460 | 2007 – 2012 | 4.6L V8 (1UR-FSE) | Base and AWD trims |
Lexus | LS460L (Long) | 2007 – 2012 | 4.6L V8 (1UR-FSE) | With extended wheelbase |
Toyota | Celsior (JDM) | Some variants | 1UR-FSE | Japanese market equivalent (rare) |
💡 Always confirm fitment using the VIN or by matching your original ECU’s part number.
Requires VIN-specific programming using Toyota Techstream or equivalent tools
Immobilizer/key registration is typically required
Without correct programming, the car may not start or show errors (DTCs)
No start or intermittent start
Engine misfire or poor performance
Fault codes related to fuel/ignition control (e.g., P0606, P1600)
Water damage or failed ECU circuits
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