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.

2004 Infiniti Q45FACTORY OEM SERVICE PROCEDURE

Fuel Pressure Release

With CONSULT-II

Turn ignition switch ON.
Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT-II
Start engine.
After engine stalls, crank it two or three times to release all fuel pressure.
Turn ignition switch OFF.

Fig 1: View Of CONSULT-II Screen

Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

Remove fuel pump fuse located in fuse box.
Start engine.
After engine stalls, crank it two or three times to release all fuel pressure.
Turn ignition switch OFF.
Reinstall fuel pump fuse after servicing fuel system.

Fig 2: Locating Fuel Pump Fuse

Courtesy of NISSAN MOTOR CO., U.S.A.

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.

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