What's that water sound in my 2008 Porsche Cayenne?

If you are hearing water sloshing around in your Cayenne and you can't find it, try this first!!!

[@phoenixrising011]

Thought I was nuts. I'll be damned. Heading to the garage now.

[@branchoffice1327]

Doing one on the sunroof drains today. Should be up in a day or 2. Let me know how yours turn out

[@avery503]

What’s the solution? Leave the plugs out? Seems like they would just fill again?!

[@branchoffice1327]

I left them out. They are actually little one way valves that get clogged with leaves and debris. if cleaned regularly, they don't pose a problem. I bought this car a year ago and did not know about this until it was too late.