Airconditioner leaking on drivers side

Check your car with a garden hose. I have seen leaks in around the windshield.. Could even be a leak around your driver's side door.

Could be water trapped somewhere in the cowl due to a blocked drain hose.

Before spending $800 for a might fix it, I would either tape it shut or seal it shut with silicone sealent. Tape might damage the paint, so be aware of this. Personally I would seal it with silicone, it can always be removes although it is a pain in the rear end. After sealing wait for the next rain and look for leaks. You could pull the headliner out and then run a water hose over the roof and look for a leak as well. A body shop will probably be cheaper to repair it than the dealer. Dealers generally charge around $100/hr for labor. Body shops charge around $65.hr.

Heater core leaking, water is swishing around in your dash!

sounds like it could be around the air conditioner coil. The drain is probably stopped up.

there is a drain for rain water and the A/C. put it up on a lift and run a long pipe cleaner in and out of it. they get plugged and this will not be a new procedure to the shop where you take it. you could do this at the same place that changes your oil as they will be under it anyway.

did you put the thermostat in backwards ?

It sounds like a heater core going bad, ac works good, do you have any of these symptoms, sweet musky smell, wet floorboard, frosting over windshield when defroster is on, adding water to the cooling system in your car for no apparent reason,

I have been hearing and experiencing some sort of reservoir of water swishing around in the passenger side of my 2004 Cayenne. The carpet is soggy and there is evidence of moisture intrusion when I open the doors. There is a film of moisture on around the lower door jams. Of course Porsche is nowhere to be found in this discussion. My beautiful car is now a camel and I can not findc a descent explanation anywhere. Your post is the closest thing I can find. And did the "garage" charge you to extract the five buckets of water? The folks at Porcsche have no idea and no one else has "had" the problem. WTF?

make sure the drain is clear, it in engine compartment agaist fire wall were heater box is located.