So I've noticed a water puddle under the car after being driven. Pretty certain it's normal condensation. I thought it was AC related, but I'm curious because I'm still getting water even when I have the AC off and it was left off for the whole trip. Is there another system that would cause water to condense? The puddle does seem to be smaller if I'm not using the AC, but this is just general observations based on non-routine driving habits.

For the record, I know the AC is operating fine because it cools when on, and just blows ambient air when turned off.

 

There's an A/C condensate drain underneath the car. Can you look to see where the puddle is originating?

 

Do you manually press the AC button off if the blower is on? If the climate control is on, whether it's set to hot or cold (or anywhere in the middle), the compressor is going to continue to run and generate condensation from humidity in the air. It will run less if the temp is set warmer but it will still run, creating condensation from dehumidifying the air in the car.

 

Has it rained lately? Perhaps the sun roof drain tubes?