* Incorrect Alignment: The lock mechanism might not be fully seated. Try carefully aligning it from multiple angles, making sure the keyhole is properly positioned before pushing.
* Damaged Lock or Mechanism: The lock itself or the receiving mechanism in the truck may be damaged during removal or replacement. Inspect both the lock and the hole in the truck for any bent or broken parts.
* Dirt or Debris: Dirt, rust, or debris could be obstructing the lock from seating correctly. Clean the area thoroughly with a brush and compressed air.
* Incorrect Lock: While unlikely if you just replaced it, ensure you have the correct spare tire lock for your 2005 F-150.
If none of these solves the problem, you may need to:
* Consult a mechanic or Ford dealer: They have experience with these locks and can diagnose the problem and potentially repair or replace the damaged part.
* Search for online videos: Search YouTube for videos showing how to reinstall a 2005 F-150 spare tire lock. This may provide visual guidance.
Don't force it. Forcing the lock could cause further damage. Take your time and carefully inspect the parts involved.