No crank no start on a 2003 Mercury Sable

What is your question?

My 2003 Mercury Sable want start or crank. All the instrument lights lights up but that's it. I've catched the battery and the starter and they are both good. This has been an off and on issues since I purchase the vehicle brand new in 2003. Have anyone else had this type of problem with this vehicle of the same year?

What makes this problem better or worse?

Not able to pinpoint when the problem will happen

How long has your 2003 Mercury Sable had this problem?

Since 2003 off and on