1. The Obvious First Steps:
* Wiggle and jiggle: Gently try wiggling the key back and forth, and turning it slightly. Sometimes a bit of debris or a slightly bent key is the culprit. Don't force it!
* Check the steering wheel: Make sure the steering wheel isn't locked. Try gently turning it back and forth while wiggling the key. If it's locked, forcing the key will only damage it further.
* Clean the ignition: Use compressed air (canned air) to blow away any dust, dirt, or debris from the ignition cylinder. A small, soft brush can also help. Avoid using liquids.
2. More Advanced Troubleshooting:
* Ignition switch failure: This is a common cause. The switch itself might be worn or malfunctioning, preventing the key from turning. This often requires replacement by a professional mechanic or locksmith.
* Broken key: Examine your key closely for any bends, breaks, or wear. A damaged key might not be engaging properly with the ignition cylinder. You might need a new key cut.
* Steering column issues: Problems within the steering column mechanism can sometimes interfere with the ignition. This is more complex and usually requires professional attention.
* Shift lever: Ensure your automatic transmission is in Park (P). If it's not, you won't be able to remove the key in most cases.
3. What NOT to do:
* Force the key: This will likely damage the ignition cylinder, making the problem far worse and more expensive to fix.
* Use excessive force or tools: Avoid hitting or prying at the ignition with tools. This can cause significant damage.
4. Seeking Professional Help:
If the simple steps don't work, it's time to call a professional:
* Locksmith: A locksmith specializes in these types of problems and has specialized tools to remove the key or repair the ignition cylinder without causing further damage. This is usually the best and safest option.
* Tow truck and repair shop: If you suspect a more serious mechanical issue (steering column, ignition switch), a tow truck and a qualified mechanic will be necessary.
Important Note: The year of the vehicle (2000 Lincoln LS) doesn't significantly change the troubleshooting steps, but having the specific model year is helpful for a professional to understand any potential quirks related to that model.
