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.

2023 Infiniti QX55 EssentialFACTORY OEM SERVICE PROCEDURE

Application Items

CONSULT can display each diagnostic item using the diagnostic test modes as follow:

Diagnostic test mode	Function
ECU Identification	Steering angle sub control module part number can be read.
Self Diagnostic Result	Self-diagnostic results and freeze frame data can be read and erased quickly. ^*
Data Monitor	Input/Output data in the steering angle sub control module can be read.
Re/programming. Configuration	Read and save the vehicle specification (TYPE ID). Write the vehicle specification (TYPE ID) when replacing steering angle sub control module.

*: The following diagnosis information is erased by erasing:

DTC
Freeze frame data (FFD)

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.