Here's what you should do:
1. Diagnose the Problem: The SES light itself doesn't tell you *what* is wrong. You need to get a diagnostic trouble code (DTC). You can do this in a few ways:
* OBD II Scanner: The cheapest and easiest way is to buy a relatively inexpensive OBD II scanner from an auto parts store or online. Plug it into the OBD II port (usually under the dashboard), and it will read the DTCs. This will give you a code (like P0171, P0420, etc.) that you can then look up online to understand the potential problem.
* Auto Parts Store: Many auto parts stores will scan your car for free. They'll tell you the code(s) and may even suggest a solution. Be aware they may try to sell you parts or services.
* Mechanic: A mechanic will have the most sophisticated equipment and expertise to diagnose the problem accurately.
2. Fix the Problem: Once you know the DTC, you can research the likely cause and either fix it yourself (if you're mechanically inclined) or take it to a mechanic. Fixing the underlying problem is crucial.
3. Clear the Code (After Repair): *Only after you've addressed the issue causing the SES light* can you clear the code. Many OBD II scanners have a "clear codes" function. Some higher-end scanners even allow you to erase specific codes. After clearing the codes, drive the vehicle for a short time to allow the system to check if the issue is truly resolved. If the problem is fixed, the light should stay off. If the light comes back on, the problem hasn't been fully addressed.
Important Considerations:
* Don't just clear the code without fixing the problem. This is akin to ignoring a check engine light on an airplane – it could mask a serious issue.
* The light may illuminate for minor or major issues. A simple loose gas cap can trigger it, but so can a serious engine problem. Don't delay in addressing it.
In short, resetting the SES light is a consequence of fixing the underlying problem, not a solution in itself. Get it diagnosed properly first.
