2014 Corolla S water leak into rear floor

[RG88]

Hi everyone,

It has been raining a lot here the last few days. Sunday I got into my car and it smelled like mildew. I figured it was the front mats from getting in/out the car while it has been raining. Parked under my carport and left the windows cracked once the rain stopped and it got hot. Today I got in again and still smells. Traced it to the back floor mats. Underneath was soaking wet and I have no idea how it got there. Haven't gone in and out the back in idk how long. I checked the trunk and it's dry. Checked the spare tire well and also dry. Seats are not wet, just the floor.

Any ideas? Where would there be a drain around that area that could possibly be leaking there?

Thanks so much for the help!

 

[JohnnieXSE]

Check all the rubber door seals. If there's any drying, cracking or even missing, that could be the cause of your water leak.

 

[RG88]

Checked the door seals and they seem fine. No cracks or gaps.

 

[JohnnieXSE]

You may have a leak on your heater core or AC evaporator core (both located in the same compartment). With a paper towel check the type of liquid. Heater core leak would feel oily and green in color (coolant). Evaporator core leak will be clear (water).