It was stated as a common problem for the ION that if you plug anything into the accessory outlets it shuts out your front turn signals/parking lights. You get the rapid blinking when you turn on your signals but regular when you hit your hazards. The dealership said they will have the parts to fix it and to bring it back on Mon. or thereafter. I had my cell phone plugged in. So if you haven't already, you might want to check your cars to see if that operates properly. It may not do it right away but it is the cause. This is the first I've heard of this so I figured I'd share.