I was giving the bike a deep clean when I noticed a black rubber hose, loose and blanked off at one end dangling near the RHS foot rest.
The part number is: 5K-E443E-00.
It is about 30cm long, connected to a unit to which the clear short tube is also connectedand the other end is blanked off with a plug.

Does anyone knows what this is for and is it supposed to be let loose in hat area?