Audi Repair: Audi S8 AC Fan Splashing/Leaking Water, ac blowers, windshield wipers

Question
Recently the AC blower fan has stated to make a splashing noise and blows water into the cockpit.  The rear AC blowers also leak water and likewise blow water into the rear cabin.  Quick turns result in water into both driver and passenger footwells.  I listen for water noise under the windshield wipers, but nothing.  Splashing and water leaking seems to be coming from behind the vents themselves.  Where does one start to diagnose and correct this problem?

Answer
hello
Like many A8 owners you have the same problem, clogged/dirty A/C drains. A/C drain needs to be clean ASAP.
They can be see once you remove both side panels/carpers of the tunnel (inside the car)there are 2 , one for each side, about half way between seat and pedals.
I use compress air to clean them out.
There are two other drains for ,where wipes and water valves are. You can see them from under the car, they are right above trans, rubber hoses (black or red)
I just blow air right inside and run away , because some times it's like a shower. This will fix your problem.
good luck                  Greg