After putting my S5 together, I find that I do not know where this vacuum line goes. It is a hard line that is connected to the charcoal canister via a soft line. I know this is also on the S4 but in the diagrams I've seen, where it connects on an S4 it doesnt connect in the same place as the S5. Or at least not that I can tell when looking at my engine compartment.

Any suggestions or pics would be very helpful as well.

 

I know on an S4 it goes to the PCV valve under the upper manifold area by the oil filler area.
It's a black plastic roundish bell type looking thing.
Maybe on an s5 it goes there too?
I see you checked.maybe you don't have one on the engine or someone removed it?

 

to the oil fill tube, near the bottom