So.... seems my 2003 has this common condition. I noticed the damp padding on the front passenger side only after hearing a squishy sound when I pressed down on it while adjusting the mat. So I pulled the carpet up and sure enough the padding was wet like a spong. I could see where the water seems to come from the firewall on the passenger side, near the center console. (I have a fan on it right now to dry it all up).
Reading about the cabin filter issues I decide to take a look this morning and this is what I found:
1. It appears that the car has already been serviced for this issue before I got it. It looks like the rain hot extention has already been installed. I did however notice that there isn't the two screws holding the upper cabin filter cover as shown in picture #2 (from a previous thread). The cover wasn't held well at all and now I'm wondering if that has something to do with a rattle I hear on occasion coming from the upper passenger side dash area.
from the other thread - I don't have the two screws olding the cover on as shown below
2. Here is a closer look at what is a rather messy silcone seal job on the bottom side of the filter housing. I'm going to redo this as it seems more like a water collector than seal!!! Notice the leaves and debri trapped around there as well. I pulled the filter, a black ugly mess that will be replaced.
Nothing was wet up here except for a few damp leaves on top of the filter. We also had a hard rain yesterday. Could it dry out that fast?
I also noticed this tube down low on the firewall. Is this the AC
drain? There was water on the floor of this tube!!! Could this potentially be another source?
Anybody have any other suggestions or advise on fixing this?