How do you reset the check engine light in a 2005 jeep wrangler?

You can't just "reset" a check engine light (CEL) in a 2005 Jeep Wrangler (or any modern car) without addressing the underlying problem. The CEL is there to inform you of a diagnostic trouble code (DTC) stored in the vehicle's computer. Simply clearing the code without fixing the issue will only cause the light to return.

There are two ways to potentially clear the code, but neither is recommended unless you've already diagnosed and repaired the problem:

* Using a scan tool: This is the proper method. A scan tool (OBD-II scanner) can read the DTC, allowing you to identify the problem. Once the problem is fixed, the scan tool can clear the code, and the CEL should turn off after a short drive (or sometimes immediately). Many inexpensive OBD-II scanners are available at auto parts stores.

* Disconnecting the battery: This is a crude method and should be a last resort. Disconnect the negative (-) battery terminal for about 10-15 minutes. This will reset the computer, but again, the light will return if the underlying problem isn't fixed. This method is not reliable for all systems and may not work.

In short: Don't just try to reset the light. Use a scan tool to find out *why* the light is on and fix the problem. Ignoring the CEL can lead to further damage and potentially unsafe driving conditions.