I have a horrible moldy/mildew smell coming from the vents and I suspect the AC condensation drain may be clogged. The cabin air filter was just changed but it did not fix the problem. Does anyone know where the AC Condensation Drain tube is specifically located? All I could find was that it is on the passengers side under the car. I looked in the area and all I could see was the plastic cover over the entire underside portion.
Thanks in advance friends.

 

On the ‘23? What did the dealership say?

 

They initially said changing the cabin filter would fix the issue. It did not. I called and spoke to the same service advisor who told me to run the AC at MAX, spray Lysol in the top footwell area on the passenger side, close all the doors and windows and let the car run for 30 minutes. I did that and the smell is still just as bad.
They want $230 to completely clean the AC system. I was told it was NOT covered under warranty. RIDICULOUS!

 

I was going to do this procedure, but nothing came out of the AC condensation drain tube.

 

Might want to pull back the carpet in the footwell. See if there’s water under there. Requires removing interior trim but well worth it to check. If drain tube is clogged condensate would leak into cabin.
Also inspect/remove water diversion plastic from firewall in the engine bay. Could lead to water coming into fresh air intake. Might also have mice.