Toyota Prius IV MK4 Smart Key Control Module ECU 89990-47132 | Denso 232900-8540 Genuine OEM (2016–2021)
Toyota Prius IV MK4 Smart Key Control Module ECU 89990-47132 / Denso 232900-8540 Genuine OEM (2016–2021)
The Toyota Smart Key Control Module ECU 89990-47132, manufactured by Denso under part number 232900-8540, is a genuine OEM electronic control unit designed for the Toyota Prius IV (XW50 / ZVW50 Series) produced between 2016 and 2021.
The Smart Key ECU is the heart of Toyota's Smart Entry & Start System. It communicates with the smart key fob, interior and exterior antennas, immobilizer system, push-button start switch, and Body Control System to provide secure keyless entry, engine authorization, and theft prevention. Toyota identifies 89990-47132 as a genuine Computer Assembly, Smart Key used on fourth-generation Prius models.
Replacing a faulty Smart Key ECU with the correct OEM module helps restore factory keyless entry, remote locking, and push-button ignition functionality.
Product Specifications
| Specification | Details |
|---|---|
| Toyota Part Number | 89990-47132 |
| Denso Number | 232900-8540 |
| Manufacturer | Denso |
| Vehicle Manufacturer | Toyota |
| Vehicle Model | Prius IV (MK4) |
| Chassis Code | XW50 / ZVW50 Series |
| Production Years | 2016–2021 |
| Module Type | Smart Key Control Module ECU |
| System | Smart Entry & Push Button Start |
| Condition | Genuine OEM Used Unit |
| Testing Status | Fully Tested |
| Warranty | 30 Days |
| Shipping | Worldwide Available |
Compatibility Table
| Make | Model | Chassis | Engine | Year Range |
|---|---|---|---|---|
| Toyota | Prius | ZVW50 | 1.8L Hybrid (2ZR-FXE) | 2016–2021* |
| Toyota | Prius | ZVW51 | 1.8L Hybrid | 2016–2021* |
| Toyota | Prius | XW50 | Hybrid | 2016–2021* |
| Toyota | Prius | MK4 | Hybrid | 2016–2021* |
*Compatibility may vary depending on VIN, trim level, Smart Entry configuration, regional specification, and production date. Always verify both part numbers 89990-47132 and 232900-8540 before ordering. OEM parts catalogs identify this Smart Key ECU for fourth-generation Toyota Prius models equipped with the Smart Entry system.
What Does the Smart Key Control Module Do?
The Smart Key ECU controls numerous vehicle access and security functions, including:
- Smart key authentication
- Keyless entry
- Push-button engine start
- Immobilizer communication
- Remote door locking and unlocking
- Smart key antenna communication
- Theft deterrent system
- Key recognition
- Start authorization
- Communication with other vehicle ECUs
The module continuously verifies that an authorized key is present before allowing the vehicle to unlock or start.
Common Symptoms of a Faulty Smart Key ECU
A defective Smart Key ECU may cause:
- Smart key not detected
- Push-button start not working
- Keyless entry failure
- Doors not unlocking automatically
- "Key Not Detected" warning
- Vehicle will not start
- Remote locking or unlocking failure
- Immobilizer warning light
- Communication faults during diagnostics
- Intermittent smart key operation
Technicians generally recommend verifying the key fob, vehicle battery, antennas, and wiring before replacing the Smart Key ECU, as these components can produce similar symptoms.
Why Buy from Automan Spare Parts?
Automan Spare Parts specializes in genuine OEM automotive electronic modules sourced from tested donor vehicles.
Benefits of Buying From Us
- Genuine OEM Toyota Parts
- Fully Tested Before Dispatch
- Worldwide Express Shipping
- Competitive Prices
- Secure Protective Packaging
- Fast Order Processing
- Expert Compatibility Assistance
- 30-Day Warranty
Our inventory includes thousands of genuine OEM electronic modules, including ECUs, Smart Key Modules, BCMs, ABS modules, Hybrid Control Modules, Inverter Controllers, Navigation Systems, Radar Sensors, and Transmission Control Modules.
Installation Information
Before installation, please note:
- Smart Key ECU programming is usually required.
- Immobilizer synchronization may be necessary.
- Existing smart keys may need to be re-registered.
- VIN matching may be required.
- Professional installation using Toyota Techstream or equivalent diagnostic equipment is recommended.
Toyota Smart Key modules are security-related components and generally require programming and key registration after replacement.
Order Toyota Prius Smart Key ECU 89990-47132 Today
Restore your vehicle's factory Smart Entry and Push Start functionality with a Genuine OEM Toyota Prius IV MK4 Smart Key Control Module ECU 89990-47132 / Denso 232900-8540 from Automan Spare Parts.
If you're unsure about compatibility, simply send us your VIN number or clear photos of your existing Smart Key ECU label, and our technical team will verify the correct replacement before you place your order.
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