The vents are clogged.
you will need to check both drain tubes to make sure they are clear.the Evaporator drain tubes the condenser does not have drain tubes. They exit the vehicle underneath the vehicle along side the transmission. They are a black rubber tube, you will need to get under the vehicle to access them.If you have no water coming out of those drains that is your problem.On top of the transmission tunnel inside the vehicle. If you look along the transmission tunnel inside the vehicle you will see the carpeted section that can be removed which is held in place by a screw. Remove this carpet on both side and you should be able to see the evaporator drains.Because the tubes are not draining the water the housing will fill up with water until it finds a point were it can leak out from.Underneath you will not see the clogging you do not need to replace them for clogging. The best way is to check the drain tubes were they connect to the housing. Yes it can be a common problem if your cabin filter has not been changed at the times that are required or if you live in an area were there are a lot of trees.
There is dealer service bulletin on such problem:
If this leakage happens when it is not raining ... and ... it does not smell like engine coolant (a sweet maple-like smell) ... AND .... you are running the air conditioning, this may be condensation drain-off from the A/C evaporator. This condensation is supposed to drain through the bottom of the heater/AC box and then through the floor (at the top of the transmission tunnel hump), to the ground. This is the puddle of water that you see under a car when the air conditioning is running.
If the drains in your heater/AC box are clogged (or the tubes connecting the drains to the chassis floor), the condensation will gather and then leak out onto the floor. The cure is to clear the drain tubes. If all of the above points fit your scenario, of course, this is under warranty. I would suggest that you ask what the dealer has already done (in detail) and note that you still have the leakage and the the drains are likely still clogged (again, if the above parameters fit your case).
Also click the link below for more help:
This will help.