Instead of resetting the light immediately, do the following:
1. Obtain a Diagnostic Trouble Code (DTC): You need to find out *why* the CEL is on. You have a few options:
* OBD-II Scanner: This is the best method. You can purchase a relatively inexpensive OBD-II scanner at most auto parts stores. Plug it into your vehicle's OBD-II port (usually under the dashboard), and it will read the DTC. This code will tell you what the problem is.
* Auto Parts Store: Many auto parts stores will scan your vehicle's computer for free. They can tell you the DTC and potentially suggest a solution.
2. Address the Problem: Once you have the DTC, you can research the issue online or consult a repair manual. This will help you understand the problem and determine if you can fix it yourself or if you need a mechanic.
3. Reset the CEL (After Repair): *Only after you've addressed the problem causing the CEL* should you reset the light. There are several ways to do this:
* OBD-II Scanner: Most OBD-II scanners have a "clear codes" or similar function. This is the easiest and safest method.
* Disconnecting the Battery: This is a less reliable method, as it doesn't always clear all codes. Disconnect the negative (-) battery terminal for about 10-15 minutes. Reconnect the battery terminal and start the vehicle. The CEL may take a few driving cycles to turn off.
Warning: Ignoring the CEL can lead to more serious and costly problems down the line. Always address the underlying issue before attempting to reset the light. If you're not comfortable diagnosing and repairing the problem yourself, take your Jeep to a qualified mechanic.
