Car will not start battery 12.5V posts cleaned ?

What is your question?

Can't start car replaced starter 1year ago and same problem now so I took hammer to starter and it started drove home and will not start. Bench test ok but no start when reinstalled . Banged with hammer and it started again. Replaced starter enable relay and still not start. With key on engine will start when hot wired but security shut off engine after 5 seconds? David