Mystery hose /// 2006 s60 2.5t

[usernam3]

Does anybody know where this hose goes or is able to send a picture of their own engine bay with the hose attached where it needs to be? I think it starts right under the lower radiator hose but can't find any pictures of where it ends up going.

IMG_5693.jpeg (430.85 KiB) Viewed 272 times

[jimmy57]

Vent hose for washer reservoir, it is open and not connected.