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.
Repair Procedures: Installation: Notes
In The Case Of Installing Used ECM
- Perform "Neutral mode" procedure with GDS.
(Refer to Smart Key System - Optima HEV .)
- Turn the ignition ON and OFF position after completing "ECM neutral mode".
- Then the ECM key register process is completed automatically.
In The Case Of Installing New ECM
Turn the ignition ON and OFF position after completing "ECM neutral mode".
Then the ECM key register process is completed automatically.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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