Thanks for those quick responses!

I ended up taking the XF to the local Advance Auto Parts where the guys have always been great to work with...

Had the Battery/Starter/Alternator test done and it passed with flying colors and the codes were read with the CPS being the only issue...

Ordered the part and paid something like $60 and it arrived Christmas Eve...It was installed a few days later and I haven't had an issue since...

I will say that without removing the heat shield...the CPS was a bit of a bugger...

I utilized a 1/4 deep "star" socket and with an extension arm and a small ratchet to loosen it...then a bit driver with a magnetic 1/4 socket to remove it without loss...installed the bolt in the reverse order...

Thanks again!