Check to see whether the liquid collecting in the car is antifreeze or water don t taste it.
Water on floor of car back seat.
A damp carpet or water on floor passenger side situation can be caused by a plugged ac condensate drain line a leaking heater core leaking windshield seal a problem with sunroof drains or water ingestion from the fresh air intake on your car s hvac system.
Another good indication is if the liquid is only collecting on the passenger side where most heater cores are located.
If your floorboards have an inch or more of standing water you ll want to use a wet dry vac to suck it out taking particular care to get into the nooks and crannies between the seats center console and armrests.
Rain water goes down inside the door at the bottom of the glass and that vapor barrier directs the water flow to a drain at the bottom front of the door.
Water on floor passenger side diagnose and fix water on floor passenger side.
The heater core is like a little radiator which water passes through under the dashboard to heat the cabin.
If you are experiencing water on the passenger side floor of your car or truck and if it s not antifreeze 99 of the time it is a simple fix.
The glue sealant that holds that barrier to the door frame can go bad when that happens the water goes inside the car rather than down the drain.
I recommend you check the front carpet under the floor mats and the trunk in the spare tire well and surrounding area for any water or wetness this will indicate where the water is coming from that would be the first step and will prevent you.
This car was getting wet on the right hand rear seat behind the driver.
We first noticed the problem when a friend sat in the back and got a wet bum.
I stripped the interior out and found a pool of water under the rear bench on the right hand side unsurprisingly and the seat foam was pretty wet too.