Here's the proper approach:
1. Diagnose the Problem: The first, and most crucial, step is to find out *why* the check engine light is on. You need to get the diagnostic trouble codes (DTCs) stored in the vehicle's computer. You can do this in a few ways:
* OBDII Scanner: The most reliable method is using an OBDII code reader. These are relatively inexpensive and widely available at auto parts stores. Plug it into the OBDII port (usually under the dashboard) and it will retrieve the codes. The codes will indicate the specific problem area.
* Dealership or Mechanic: A Ford dealership or qualified mechanic can also diagnose the problem using their professional-grade diagnostic tools. This is often the best option if you're not comfortable doing it yourself.
2. Repair the Problem: Once you know the DTCs, you can research the likely cause and attempt a repair yourself (if you have the mechanical skills and tools) or take your vehicle to a mechanic to have it fixed. This is the most important step.
3. Clear the Codes (After Repair): After the repair is complete, *then* you can clear the codes. Many OBDII scanners have a "clear codes" function. Some advanced scanners allow you to verify the repair has been successful by checking for the codes to remain cleared after a test drive. Otherwise, the light will likely come back on.
Important Considerations:
* Safety: Ignoring a check engine light can lead to further damage to your vehicle or even create unsafe driving conditions. Don't put it off.
* Warranty: If your vehicle is still under warranty, it's crucial to have the problem diagnosed and repaired by a Ford dealership to avoid voiding the warranty.
* DIY vs. Professional: If you're not comfortable working on vehicles, it's best to have a qualified mechanic diagnose and repair the problem.
In short, resetting the check engine light is the *last* step, not the first. Focus on identifying and fixing the underlying mechanical or electrical issue.
