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.
1998 Infiniti Q45 BaseFACTORY OEM SERVICE PROCEDURE
Automatic Transmission Shift Interlock System
- Description
- Operation
- Symptom Tests (Q45)
- Notes
- Selector Lever Cannot Be Moved From Park Position With Key In And With Brake Pedal Applied Or, Selector Lever Can Be Moved From Park Position When Key Is Removed From Key Cylinder
- Key Cannot Be Removed From Ignition Switch With Shift Lever In Park Position Or Key Can Be Removed From Ignition Switch With Shift Lever In Any Position Other Than Park
- Symptom Tests (Except Q45)
- Component Tests
- Removal & Installation
- Wiring Diagrams
Factory Service Tools
Use the Manual With the Right Hardware
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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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