Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
ECM Neutral Mode Procedure (With Smart Key)
- After replacing the ECM of the vehicle with the smart key system (button start), the following procedure must be performed.
[If Installing A Used ECM]
- Perform "ECM Neutral Mode" procedure using KDS/GDS.
(Refer to Body Electrical System - "Smart Key Diagnostic - INSPECTION ")
- After finishing "ECM Neutral Mode", turn IGN ON then OFF using the smart key or start button. Then the ECM learns information on the smart key automatically.
(Refer to Body Electrical System - "Smart Key Diagnostic - INSPECTION ")
[If Installing A New ECM]
Turn IGN ON then OFF using the smart key or start button. Then the ECM learns information on the smart key automatically.
(Refer to Body Electrical System - "Smart Key Diagnostic - INSPECTION ")
- Perform "ECM Neutral Mode" procedure using KDS/GDS.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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