Water pooling in passenger floor board of 2002 Toyota Prius after running A/C. To the amount of an inch a day, I've been soaking it up but I can't get it all. It just keeps coming and I really know nothing about cars or what to do.

Question edited for clarity, add maker.
Question moved to model category.

Based on our research the RAV4s with wet floors are usually, but not always, clogged sunroof drains or drain outlets. Other RAV4 owners found that the body trim surrounding their windshield or even the fender panel had degraded and failed, allowing water to seep in during heavy rain.
Aug 12, 2015

If the passenger floor of your RAV4 is wet - here is the fix

Torque News https://www.torquenews.com > if-passenger-floor-your-r...

Wet Passenger Floor

Toyota RAV4 Forums https://www.rav4world.com > ... > 4.3 Mechanical
Sep 26, 2015 - After a few years, some foam will start to stiffen up and allowing water to seep past them allowing the water to pool around the opening.

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The Prius come woth a custom built Li-ion battery and there is no way that you can replace it by yourself. It is better to contact the Service centre to get it done. They will get you the original battery and also complete the replacement within a day. The battery is located in a T-shape structure beneath the driver seat and through the middle of the passenger section.

After a heavy rain, I noticed about 2 inches of water on the rear passenger floorboards of my '02 Signature TC. The front was also soaked.

Try this link at Edmunds' forum - http://townhall-talk.edmunds.com/direct/view/.f147dda/0 - it discusses various leaks the town car has. A little way into the thread, it specifically discusses the leak on the passenger side. My leak was coming in through the foam gasket under the HVAC (air vent assembly). After reading the entire thread, I concluded my problem could be fixed by following Ralka's instructions on page three, reply #25. The whole repair took just over an hour - I'm not a mechanic, so if you're mechanically inclined, it would probably take less time. It fixed the problem.

PS - I also had to replace two plastic, rectangular cowl retainer clips (with plastic screws), they're made by Dorman (the 41099 cowl retainer fit perfectly, in spite of a link they have that says it's not made for the TC). If you also need to replace the clips, you can get them here - http://www.autopartswarehouse.com/search/?searchType=global&Ntt=cowel+retainer&N=0&submit=Submit+Query.

Good luck.

Sounds like the AC condenser drain is plugged. Do you notice a puddle under the right front while idling with the AC running? If not, the drain is plugged should be an easy and cheap fix at any local garage.

Drill a 3/8 th hole through the floor at the lowest point then look for the water leak ,is the AC drain pipe clear as this is the most obvious point of entry and the AC condensate will run into car if this pipe is blocked

What you've described is a bad heater core. You most likely can smell coolant inside the car and the inside windshield will have a film on it. It's also a good possibility that the passenger floor is soaked with coolant.

Hello, and welcome to FixYa. Please allow me to assist you.

Yes, you can do this yourself, and save yourself the costs of a technician doing it.

What you have is a clogged AC condensate drain hose.

When the AC is on, the AC system removes moisture form the air in the cabin, and drains this moisture out onto the road surface.

What you need to do:

Open the passenger side door, and have some towels and a small bucket ready. Pull back the carpet in the passenger side footwell, and, once the carpet is pulled back, you will be looking for a small black rubber hose that goes from the heater box, and pokes thru a rubber grommet in the firewall, towards the engine. Pull the rubber hose towards you, away from the firewall grommet, and see if the outer end is plugged up with mud. If so, insert a suitable thing, like a pencil, into the end to unclog it. Be prepared for about a quart of water to drain from the hose into your small bucket.

If the water does not drain from the open end, pull the hose off totally, from the bottom of the fitting on the heater box, and runs a coathanger thru it, to release the blockage, and then flush it out with water. Note that when you remove the rubber hose from the heater box fitting, water will drain out onto your carpet. This is where you need the towels.

I hope that this helps you out, ans saves you the 70 dollars most places would charge you to clean your drain hose.

If my assistance is useful, please consider leaving a 4-thumbs rating; I'd appreciate it greatly.

Thanks for choosing FixYa for assistance. Have a great day.

Most likely the ac drain is stopped up. The drain is under the car near where a passenger feet would be. You can try gently running a pencil or something similiar to clear it out or compressed air.

top up all of your fluid levels and run car at medium range of revs for up to 5 minutes. check if any fluids have dropped significantly. if i guessed at any it would be your brake fluid so take EXTREME caution as this will cause extremely unreliable and unresponsive brakes. it is also a corrosive a flamible liquid. however, if it isnt this check under the carpet of your car for a whole in the floor, or anyother places outside fluids could seep in around that area.

My dad has a 2004 Dodge Dakota with the exact same problem, the passengers side floor board is soaked with water after running the AC. Also there is a pool of water that collects under the truck.

We are getting a mechanic to look at it, I will post what the problem is when we find out.