I am confident the fuel pump not failing since it activates just like all other porsches, when you open the front door. You can hear a little of it. You can hear the priming.
Is there a better way to ensure? Thanks.

 

porshe panamera, it does not start, I changed the battery and it does not start either, it only starts when I place the battery in parallel, it could be a relay, any other suggestions

 

This is one of my old threads.
As update, and to finish this thread up, it was the starter.
I replaced the starter and car worked just fine.
Long process. But not super difficult.