Found below on a car forum. Most likely the drain tube for the a/c is plugged.Sometimes, you can take a coat hanger and slide it up the tube to remove the blockage. If you look on the passenger side firewall under the hood, you should be able to see a 1/2 rubber hose coming out of the firewall. This is the a/c drain tube, try to get the coat hanger up it gently, if this is the problem, water will likely come out once you do this. If you can't get the hanger up there, then you may have to pull the carpet back and you will see where the tube connects to the heater box. You will have to pull it off there and run the hanger through it. You will get wet, so bing towels. If you unhook it under the dash, you will need them to soak up the water.
My son has a 2012 Elanta. It?s getting water inside the passenger side under the dashboard. From what I?ve looked on the net, it sounds like a plugged A/C drain. I haven?t had a chance to look at at the car yet, but from what I searched, half the battle seems to be finding where the drain comes out.
Does anyone have any suggestions on locating and then clearing the drain (or even if that sounds like the issue)?
Money is a little tight, so he?d like to take care of it himself if he can.
Any suggestions would be appreciated.
Thanks.
Mike O.