I purchased my used Jeep back in 2013 and my check engine light has always been lit up. I was asked by the mechanic why I hadn't said anything about before. My response 'Because I thought it was suppose to be showing .' 'Doesn't it flash on and off when something is wrong?' His response, 'Ah, the problem has probably gotten worse then.' Well, he did check the vehicle out and found some small things that were easily corrected and told me to call him if the check engine light comes back on. And after a while it did come back on but I didn't call. So I was at Kroger one Sunday and my Jeep just wouldn't start - no power - nothing. I asked a guy who was getting ready to leave for his help - he couldn't but asked his friend if he could check it out. Problem: battery cable was loose. So it happened again and I got under the hood and moved the cable a bit and the Jeep started. I was concerned by this so I checked out Youtube and found a temporary solution. I didn't really want to do it but I had this awful thought cross my mind. What if the cable came loose after I locked the vehicle? How would I even get in it? What damage would occur if I called Roadside Assistance for help, not to mention the cost? With that said, I found a small screw and placed it so the cable wouldn't move. No check engine light so I wonder if that has been the probably all along.