Here's the proper approach:
1. Diagnose the Problem: The first step is to determine *why* the check engine light is on. This is crucial. You can do this in a few ways:
* OBD-II Scanner: This is the most reliable method. Buy a relatively inexpensive OBD-II scanner (available at most auto parts stores) and plug it into your Ram's OBD-II port (usually under the dashboard). The scanner will read the diagnostic trouble codes (DTCs), which provide information about the specific problem.
* Auto Parts Store: Many auto parts stores offer free OBD-II code reading services. They can tell you what the code means, and potentially suggest a solution.
2. Fix the Problem: Once you know the DTCs, you can research the problem online or consult a repair manual to fix the issue. This might involve replacing a sensor, fixing a leak, or addressing a more serious mechanical problem.
3. Clear the Code (After Repair): *Only after you've addressed the underlying problem* should you attempt to clear the code. There are several ways to do this:
* OBD-II Scanner: Most scanners have a function to clear diagnostic trouble codes. Follow the instructions for your specific scanner.
* Disconnect the Battery: This is a more rudimentary method. Disconnect the negative (-) battery terminal for about 15-30 minutes. This will often reset the system, but it's less reliable than using a scanner. Be aware that disconnecting the battery will reset other settings in your truck (like radio presets).
Important Considerations:
* Ignoring the Check Engine Light is Risky: Continuing to drive with a check engine light on can lead to further damage to your vehicle and potentially create safety hazards.
* Professional Help: If you're not comfortable diagnosing and repairing the problem yourself, take your Ram to a qualified mechanic.
In short, resetting the light is the *last* step, not the first. Focus on finding and fixing the root cause of the problem.
