Turn key all the way - all dash lights come on, car has power (radio, windows, etc.) - But car does not start. Does not crank, etc. Nothing. Tried both keys in case it was the key. Won't start. Played around with it for about 20 minutes, car suddenly starts when key is turned like nothing ever happened. Car runs fine for 3 weeks. One day - car will not start again. Mechanic plays around with it for 20 minutes, everything has power, car will not start. All of a sudden - car is fine.