Condensation under your car s floor mats is a two part problem with a single solution.
Wet under car mat.
The heater core is like a small radiator.
Bad heater core a similar problem could occur with the car s heater system.
If the damp carpet is under a car mat remove the mat after checking to see if it contains any moisture or mold.
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In the winter or even wet spring weather you pull in and the moisture dirt and debris goes everywhere.
Continue this procedure until there is very little moisture remaining in your carpet.
Everything that falls off your car stays in one place.
Hot coolant flows from the engine where heat is absorbed and taken to the car s heater core when you turn on the heater.
This makes it easier to clean safer to walk on your concrete and keeps your belongings dry.
Heat under your floor mat comes from the exhaust pipes and causes moisture trapped in the carpet to steam and collect on the bottom of the mat.
To find out where your leak could be coming from check out the information below.
Causes of a wet passenger side floor mat 1.
Soak up all the moisture from your carpet with dry absorbent towels.
Step 3 remove the mold.