1. Park your vehicle on a level surface, apply the parking brake, and engage the vehicle's transmission into "Park" (for automatic) or "First gear" (for manual).
2. Locate the pinch weld on the underside of your Lincoln Navigator. It is usually a reinforced area near the rear wheel, where the car's frame meets the undercarriage.
3. Position the jack correctly: Place the jack under the pinch weld, ensuring it is stable and won't slip. Refer to your vehicle's owner's manual for the exact placement of the pinch weld.
4. Raise the vehicle using the jack: Use the jack to lift the vehicle just high enough so that you can remove the flat tire easily but low enough that the vehicle is still stable.
5. Loosen the lug nuts: Using a lug wrench, loosen the lug nuts (but do not remove them yet) on the flat tire.
6. Raise the vehicle further until the flat tire is off the ground: Continue using the jack to raise the vehicle until the flat tire is about six inches off the ground.
7. Remove the lug nuts and take off the flat tire: Remove the lug nuts completely and pull the flat tire straight toward you to remove it.
8. Place the spare tire: Position the spare tire onto the lug nuts, ensuring it is securely seated.
9. Put the lug nuts back on and tighten them by hand: Hand-tighten the lug nuts to hold the spare tire in place.
10. Lower the vehicle: Use the jack to lower the vehicle until it's just touching the ground, but not bearing the full weight yet.
11. Tighten the lug nuts fully: Use the lug wrench to tighten the lug nuts in a star pattern until they are snug.
12. Lower the vehicle completely: Slowly release the jack until the vehicle is fully lowered to the ground.
13. Remove the jack: Once the vehicle is fully on the ground, remove the jack.
14. Double-check lug nuts: For safety, get back in the driver's seat and give the lug nuts a final check to ensure they are tight.
Remember to always follow the specific instructions provided in your Lincoln Navigator's owner's manual for changing a tire. Safety should be your top priority when performing any vehicle maintenance tasks. If you're not confident in performing this procedure, it's best to seek assistance from a professional mechanic or a towing service.
