Here's a breakdown of what you should try, in order of likelihood:
1. Check your keys: This is the most common cause. Try all your keys. If you only have one key, try having a new key made by a locksmith or Ford dealership that is properly programmed. A faulty key transponder is a very frequent cause of anti-theft problems.
2. Battery: A weak or dying battery can sometimes trigger the anti-theft system. Try jump-starting your car with a fully charged battery. If this works, your battery likely needs replacing.
3. PATS System (Passive Anti-Theft System): This system relies on the transponder chip in your key. If the system isn't recognizing the key, it will prevent the vehicle from starting. Again, a new programmed key from a locksmith or dealership is often the solution. Sometimes, a problem with the receiver in the ignition column can also cause this. This requires professional diagnosis.
4. Alarm System (if equipped): If your Windstar has a separate aftermarket alarm system, it could be causing the problem. Check the alarm's documentation or consult a professional installer.
5. Computer Module Problems: In rarer cases, there could be an issue with the car's computer modules (PCM, BCM, etc.). This would require professional diagnosis and potentially expensive repairs involving a scan tool and potentially replacing a module.
What NOT to do: There are no "secret reset codes" or procedures readily available online for resetting the Windstar's anti-theft system that are safe and reliable. Attempting to bypass the system without proper knowledge can damage your car's electrical system and potentially void your insurance.
What you SHOULD do:
* Start with the keys. If you suspect a key issue, get a replacement key made from a locksmith experienced with Ford vehicles or directly from a Ford dealership. They can program the new key correctly.
* Check your battery. A low battery can cause all sorts of electrical gremlins.
* If the above steps fail, take it to a mechanic or Ford dealership. They have the diagnostic tools to properly assess the problem. Trying to fix this yourself without the proper knowledge and equipment is strongly discouraged.
A professional diagnosis is the most reliable and safest way to address anti-theft system issues. Avoid random online suggestions, as they can lead to more problems and expense.