How to service the Engine Control Module on Toyota Prius?

The Engine Control Module service process begins with disconnecting the negative battery cable then waiting 90 seconds to avoid Air Bag and seat belt pretensioner discharge. Service on the Engine Control Module begins with taking out the instruments and the No. 3 heater to register duct. Proceed with ECM service by disconnecting all 8 connectors of both units and then remove the bolt and two nuts that hold the bracket to the ECM. After that remove the nuts and the six screws and three No.1 ECM brackets and finally remove the four screws and two No.2 ECM brackets together with the two screws and No.3 ECM bracket. Begin by installing the No. 3 ECM bracket using its two screws followed by the 2 No. 2 ECM brackets with four screws after which you should install the three No. 1 ECM brackets using six screws. Use a torque wrench to tighten the 2 nuts securing the ECM at 3.0 N.m (31 kgf.cm, 27 in.lbf), followed by the 2 nuts with bolt that screws into the ECM with bracket at same torque value. After connecting hybrid vehicle control ECU connectors and ECM connectors the procedure requires reinstalling the No. 3 heater to register duct and instrument panel sub-assembly. The process concludes with cable reattachment to the negative terminal before performing initialization procedures that some systems need after cable disconnection and reconnection.

OEM Toyota Prius Engine Control Module

Engine Control Computer

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18 Engine Control Modules found

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Toyota Prius ECM
Part Number: 89661-47D21
$588.94 MSRP: $863.09
You Save: $274.15 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: DENSO
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2022 Toyota Prius | L Eco, LE, Limited, XLE | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47C30
$566.24 MSRP: $829.83
You Save: $263.59 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: DENSO
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020 Toyota Prius | L Eco, LE, Limited, XLE | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47162
$584.85 MSRP: $857.11
You Save: $272.26 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-47161, 89661-47160, 89661-47140
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2006-2007 Toyota Prius | Base, Touring | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47104
$618.00 MSRP: $905.69
You Save: $287.69 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-47070, 89661-47103, 89661-47071, 89661-47100, 89661-47101, 89661-47102, 89661-47072
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2006 Toyota Prius | Base | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89660-47514
$675.77 MSRP: $990.34
You Save: $314.57 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer Assembly, Engine; Engine Control Module
- Replaces: 89660-47511, 89660-47512, 89660-47513, 89660-47510
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2012-2014 Toyota Prius | Five, Four, Three, Two | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89660-47435
$671.45 MSRP: $984.02
You Save: $312.57 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer Assembly, Engine; Engine Control Module
- Replaces: 89660-47432, 89660-47434, 89660-47431, 89660-47430, 89660-47433
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011 Toyota Prius | Base | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89660-47306
$672.36 MSRP: $985.36
You Save: $313.00 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer Assembly, Engine; Engine Control Module
- Replaces: 89660-47300, 89660-47302, 89660-47305, 89660-47304, 89660-47301, 89660-47303
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010 Toyota Prius | Base | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47E40
$590.87 MSRP: $865.92
You Save: $275.05 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Computer, Engine Control
- Manufacturer Note: DENSO,*614
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2023 Toyota Prius | LE, Limited, XLE | 4 Cyl 2.0 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47C80
$584.17 MSRP: $856.11
You Save: $271.94 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: DENSO
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2021-2022 Toyota Prius | 2020 Edition, L Eco, LE, Limited, XLE | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47C40
$567.03 MSRP: $830.99
You Save: $263.96 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: DENSO
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2021 Toyota Prius | 2020 Edition, L Eco, LE, Limited, XLE | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47A10
$561.70 MSRP: $823.18
You Save: $261.48 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: DENSO
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2019 Toyota Prius | L Eco, LE, Limited, XLE | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47A00
$596.64 MSRP: $874.38
You Save: $277.74 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: DENSO
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2019 Toyota Prius | L Eco, LE, Limited, XLE | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47653
$588.94 MSRP: $863.09
You Save: $274.15 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-47652, 89661-47651, 89661-47650
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2018 Toyota Prius | Four, Four Touring, One, Three, Three Touring, Two, Two Eco | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47643
$640.92 MSRP: $939.28
You Save: $298.36 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Manufacturer Note: DENSO
- Replaces: 89661-47642, 89661-47640, 89661-47641
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2018 Toyota Prius | Four, Four Touring, One, Three, Three Touring, Two, Two Eco | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47250
$566.58 MSRP: $830.33
You Save: $263.75 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2009 Toyota Prius | Base, Touring | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89661-47054
$1124.21 MSRP: $1647.54
You Save: $523.33 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-47052, 89661-47053, 89661-47031, 89661-47051, 89661-47030, 89661-47050
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2003 Toyota Prius | Base | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89660-47751
$569.19 MSRP: $834.16
You Save: $264.97 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Computer Assembly, Engine; Engine Control Module; Computer, Engine Control
- Replaces: 89660-47750
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2015 Toyota Prius | Five, Four, One, Persona Series, Three, Two | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Toyota Prius ECM
Part Number: 89660-47550
$452.56 MSRP: $663.23
You Save: $210.67 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Computer Assembly, Engine; Engine Control Module; Computer, Engine Control
- Manufacturer Note: MEXICO SPEC
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2012 Toyota Prius | Five, Four, Three, Two | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)

Toyota Prius Engine Control Module

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Toyota Prius Engine Control Module Parts Questions & Experts Answers

ECM
89661-47104
Q: How to service the Engine Control Module on Toyota Prius?
A: The Engine Control Module service process begins with disconnecting the negative battery cable then waiting 90 seconds to avoid Air Bag and seat belt pretensioner discharge. Service on the Engine Control Module begins with taking out the instruments and the No. 3 heater to register duct. Proceed with ECM service by disconnecting all 8 connectors of both units and then remove the bolt and two nuts that hold the bracket to the ECM. After that remove the nuts and the six screws and three No.1 ECM brackets and finally remove the four screws and two No.2 ECM brackets together with the two screws and No.3 ECM bracket. Begin by installing the No. 3 ECM bracket using its two screws followed by the 2 No. 2 ECM brackets with four screws after which you should install the three No. 1 ECM brackets using six screws. Use a torque wrench to tighten the 2 nuts securing the ECM at 3.0 N.m (31 kgf.cm, 27 in.lbf), followed by the 2 nuts with bolt that screws into the ECM with bracket at same torque value. After connecting hybrid vehicle control ECU connectors and ECM connectors the procedure requires reinstalling the No. 3 heater to register duct and instrument panel sub-assembly. The process concludes with cable reattachment to the negative terminal before performing initialization procedures that some systems need after cable disconnection and reconnection.

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