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.

2024 Infiniti QX55 EssentialFACTORY OEM SERVICE PROCEDURE

Work Procedure

PERFORM ECM RECOMMUNICATING FUNCTION
1. 1. Install ECM.
  2. Contact backside of registered Intelligent Key* to push-button ignition switch, then ignition switch ON.*: To perform this step, use the key that is used before performing ECM replacement.
  3. Maintain ignition switch in the ON position for at least 5 seconds.
  4. Ignition switch OFF.
  5. Check that the engine starts.
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GO TO 2.
PERFORM ADDITIONAL SERVICE WHEN REPLACING ECM
1. Refer to Work Procedure .
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Inspection End.

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Factory Service Tools

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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.