Here's a general outline. This is NOT a definitive guide and specific steps may vary depending on your exact Pathfinder model. Always consult a repair manual specific to your vehicle's year and model for detailed instructions and diagrams. A Haynes or Chilton manual would be a good investment.
Tools You'll Likely Need:
* Socket set (metric): Various sizes, likely including 10mm, 12mm, 14mm.
* Screwdrivers (Phillips and flathead): Various sizes.
* Pliers: Needle-nose and regular.
* Ratchet and extensions: To reach hard-to-access fasteners.
* Wire strippers/cutters: Possibly needed for electrical connections.
* Electrical tape: To secure wiring.
* New ignition switch: Ensure you purchase the correct part number for your specific Pathfinder.
* Shop rag: To keep things clean.
* Possibly a lock pick set if you need to remove the steering wheel (if the ignition is seized) or a steering wheel puller. Do this only if absolutely necessary, this step significantly increases the complexity of the repair.
General Steps (Consult your repair manual for specific details):
1. Disconnect the battery: This is crucial for safety to prevent electrical shocks and short circuits. Disconnect the negative terminal first.
2. Remove the steering wheel (potentially): In some cases, the steering wheel may need to be removed to access the ignition switch. This is a complex step requiring special tools and knowledge to avoid damaging the airbag and steering column. Only attempt this if absolutely necessary and you understand the risks involved. Consult a repair manual.
3. Remove the steering column shroud/trim: This usually involves removing screws and possibly some plastic clips.
4. Access the ignition switch: The ignition switch is usually located behind the steering wheel, often mounted on the steering column. You'll need to carefully remove any components obstructing access.
5. Disconnect the wiring harness: Carefully disconnect the electrical connectors from the old ignition switch. Take pictures or make notes of the wiring connections to ensure you reconnect everything correctly.
6. Remove the old ignition switch: This often involves removing screws or retaining clips holding the switch in place. It might be tricky and require some maneuvering.
7. Install the new ignition switch: Carefully install the new ignition switch, ensuring it's properly seated and aligned.
8. Reconnect the wiring harness: Carefully reconnect the wiring harness to the new ignition switch, matching the connections to your notes or pictures.
9. Reassemble everything: Reinstall the steering column shroud/trim, steering wheel (if removed), and any other components you removed.
10. Reconnect the battery: Reconnect the battery's positive terminal.
11. Test the ignition: Test the new ignition switch to ensure it functions correctly. Check all ignition positions (accessory, on, start).
Important Considerations:
* Key Programming: Some ignition switches require key programming. You may need to have your keys reprogrammed by a locksmith or dealership after installation.
* Steering Wheel Lock: If you remove the steering wheel, you might need to realign the steering wheel lock mechanism. Incorrect reassembly can result in a steering wheel that's misaligned or won't unlock.
* Airbag Safety: If you're removing the steering wheel, remember that the airbag is a crucial safety feature. Disconnecting or working near the airbag module improperly can cause it to deploy unexpectedly, resulting in injury.
This process is significantly more involved than a simple description can convey. Refer to a repair manual specific to your 1995 Nissan Pathfinder for detailed, illustrated instructions. If you're not comfortable tackling this repair, it's strongly recommended to seek professional help. A poorly installed ignition switch can lead to serious problems.
