[guru944]

rogerxu1;

Had a similar issue on my 2006 S with +188k miles.

What I saw was that initially if i turned the key and then continued, it would crank for 1-2 sec then stop. The engine would not re-crank until i turned of the key all the way "off" then re attempted.
However if I turned the key and waited +15 sec then attempted to crank, it would start and fire up. That went on for a few weeks then eventually the starter failed. New Bosch AGM Blue top Battery at the time.
I had to replace starter, pull off upper intake plenum, etc. I did complete coolant service, replaced thermostat, gaskets, "O-rings", waterpump, clean throttlebody, vaccuum hard line/hose, etc. Big Job! I did it all at home.
I know there are some electrical ground issues through out the car. But managed to get it running back then....

I definitely suspect the starter......

Hope this reply helps a bit.
Please keep us posted....God Bless You, Later....