How to initialize the Engine Control Module (ECM) after replacing the automatic transmission assembly or engine assembly on 2005 Toyota 4Runner?

Reset memory procedures for the Engine Control Module (ECM) require using a hand-held tester because this tool is the only authorized method to execute the operation. The Engine Control Module needs reset memory storage since it will learn the new assembly configurations from the Engine Coolant Temperature (ECT) retained settings of the automatic transaxle and engine assemblies. Start the memory reset through standard procedures that include shutting off the ignition then plugging in the hand-held tool to DLC3. Activate the ignition switch to ON while turning on the main switch of the hand-held tester. You should choose "Diagnosis / Enhanced OBD II" then use the Engine menu to run the reset memory procedure. A proper road test has to be conducted after reset memory completion to validate the ECM's learning of new settings.

OEM 2005 Toyota 4Runner Engine Control Module

Engine Control Computer

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8 Engine Control Modules found

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2005 Toyota 4Runner ECM
Part Number: 89661-35A41
$815.49 MSRP: $1195.10
You Save: $379.61 (32%)
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-35A40
- Part Name Code: 89661
- Item Weight: 1.40 Pounds
- Item Dimensions: 10.0 x 7.8 x 3.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89661-35A41
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
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Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5
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2005 Toyota 4Runner ECM
Part Number: 89661-35A02-84
$554.22 MSRP: $817.56
You Save: $263.34 (33%)
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Product Specifications
- Other Name: Reman, Engine Ecu; Engine Control Module
- Replaces: 89661-35A01, 89661-35A00
- Item Weight: 2.20 Pounds
- Item Dimensions: 12.7 x 10.3 x 4.1 inches
- Condition: New
- SKU: 89661-35A02-84
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
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Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5 | 6 Cyl 4.0 L GAS, 8 Cyl 4.7 L GAS
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2005 Toyota 4Runner ECM
Part Number: 89661-35A23
$1042.94 MSRP: $1528.44
You Save: $485.50 (32%)
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-35A20, 89661-35A22, 89661-35A21
- Item Weight: 1.90 Pounds
- Condition: New
- SKU: 89661-35A23
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5 | 6 Cyl 4.0 L GAS
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2005 Toyota 4Runner ECM
Part Number: 89661-35A13
$1067.91 MSRP: $1565.03
You Save: $497.12 (32%)
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89666-35620, 89661-35A12, 89666-35621, 89661-35A11, 89661-35A10
- Item Weight: 2.20 Pounds
- Condition: New
- SKU: 89661-35A13
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5 | 6 Cyl 4.0 L GAS, 8 Cyl 4.7 L GAS
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2005 Toyota 4Runner ECM
Part Number: 89661-35A52
$889.83 MSRP: $1304.05
You Save: $414.22 (32%)
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-35A51, 89661-35A50
- Condition: New
- SKU: 89661-35A52
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5
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2005 Toyota 4Runner ECM
Part Number: 89661-35A83
$862.59 MSRP: $1264.14
You Save: $401.55 (32%)
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-35A80, 89661-35A81, 89661-35A82
- Item Weight: 1.80 Pounds
- Condition: New
- SKU: 89661-35A83
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5 | 6 Cyl 4.0 L GAS
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2005 Toyota 4Runner ECM
Part Number: 89661-35A73
$688.03 MSRP: $1008.31
You Save: $320.28 (32%)
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Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-35A71, 89661-35A72, 89661-35A70
- Condition: New
- SKU: 89661-35A73
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5 | 6 Cyl 4.0 L GAS
View related parts
2005 Toyota 4Runner ECM
Part Number: 89661-35A33
$965.08 MSRP: $1414.33
You Save: $449.25 (32%)
Product Specifications
- Other Name: Computer, Engine Control; Engine Control Module
- Replaces: 89661-35A32, 89661-35A30
- Item Weight: 1.90 Pounds
- Condition: New
- SKU: 89661-35A33
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2005 Toyota 4Runner Submodels:
- Limited, Sport, SR5 | 6 Cyl 4.0 L GAS

2005 Toyota 4Runner Engine Control Module

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2005 Toyota 4Runner Engine Control Module Parts Q&A

Q: How to initialize the Engine Control Module (ECM) after replacing the automatic transmission assembly or engine assembly on 2005 Toyota 4Runner?
A: Reset memory procedures for the Engine Control Module (ECM) require using a hand-held tester because this tool is the only authorized method to execute the operation. The Engine Control Module needs reset memory storage since it will learn the new assembly configurations from the Engine Coolant Temperature (ECT) retained settings of the automatic transaxle and engine assemblies. Start the memory reset through standard procedures that include shutting off the ignition then plugging in the hand-held tool to DLC3. Activate the ignition switch to ON while turning on the main switch of the hand-held tester. You should choose "Diagnosis / Enhanced OBD II" then use the Engine menu to run the reset memory procedure. A proper road test has to be conducted after reset memory completion to validate the ECM's learning of new settings.

Related 2005 Toyota 4Runner Parts

Alternate Year Models

2004 Toyota 4Runner Engine Control Module 2006 Toyota 4Runner Engine Control Module