This morning I got in my car and the warning came on to tighten the fuel cap. I hadn't filled up for over a week, so I thought this was odd. But sure enough, I popped the door and the cap was just hanging there. I had an oil change yesterday, so they may have removed it as part of an inspection? I still have the same half a tank left and the same estimated range left, so it doesn't look like I've lost fuel. I tightened it back one with three clicks and turned the car back on. The light was still on. I tried clearing the warning, but it popped right back up. I drove to work and powered the car off and back on again. It's still there. I've checked the cap again and it's still tight. Does anyone know how to clear this?