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.
2021 Infiniti QX50 Autograph, 4WDFACTORY OEM SERVICE PROCEDURE
Work Procedure
- PRECONDITIONING
Check that the engine is cold [coolant temperature: 50 deg. C (122 deg. F) or less].
Is the engine cold?
YES
GO TO 2.
NO
Park the vehicle at a cold place and cool down the engine. And then, GO TO 2.
- INITIALIZING A LEARNING VALUE
With CONSULT
- Start the engine and let it idle at least 10 seconds.
- On CONSULT screen, select "ENGINE" >> "Active Test" >> "WASTEGATE ACTUATOR".
- Operate the actuator from the fully closed position to the fully open position and check that actual value is within the range of (- 0.00052) - (+ 0.00052) m when the target value is set at 0 m.
YES
END
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.