Just bought a 2004 S40. noticed right rear floor is wet. Have read the TSB's on sunroof drain etc. Any other suggestions on what this might be?

 

It always seems to be the sunroof drains.

 

We've been noticing humidity in the car and wet floors on the passenger side. Even while it's not raining. Seems like the culprit is the AC Drain, I would love to see a diagram to know what I am looking for in cleaning out the drainage tubes, what if any tools are needed if removing the seat is nessassary or desirable . Shakey youtube video and libary memberships without the car repair manual promiced have left me wondering how I can find a good diagram of the system that seems to be troubling many folks. If I get some writen instructions I may try to make one but I could really just use the picture it's worth a thousand words.
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There are usually 3 choices. Sunroof drains: there are 4, one at each A and C pillar. The front ones seem to be problematic. There are pictures here and at Swedespeed.

A/C drain: There is only one and the pax side foot well is a good indicator. However, it is November already. You still running the A/C?

My favorite: Heater core O-rings. These little beauties leak that stinky green fluid which flows to the back pax foot well and makes your feet sticky. This one is a PITA to fix. I spent hours bent over the door sill working in impossibly tight spaces. My ribs hurt for days after. If you are losing coolant and your interior fogs up continually, this is the place to look.

 

The passenger side rear floor is wet (lot of water) and there is a slushy sound when the A/C is running. It seems to be a clogged A/C Drain, I wonder if somebody could recommend a fix to it. One additional question: where is the A/C drain located under the car? A picture or video could help a lot.

Thank you,

 

Might help to know what kind of car you have....

 

If you have the 2004.5 and up S40 then remove all the plastic on the right side of the center console. Look for the rubber drain hose from the heater core area.

 

I just noticed this thread and yep i got the same problem with my 2006 s40. How do you remove the plastic on the right side of the center console?
Thanks