Well, here is the scoop!

Bought the new pump from BMW $104.00, and removed the LH rear wheel well plastic liner, fairly easy, just remove all of the small screws and the push pin rivets. The pump hides up in the rear corner of the wheel well. Really simple removal of a couple of scres and hoses!

Gone is the service engine soon light! and back is the pump noise every other 20 minute or more trip after engine shut down!

Thanks again X5 World!