windows in my toyoto yaris keep foging up why?
If the inside windows fog up, you definitely have moisture in the car. Pick up all the floor mats, front and rear and check the carpet with your bare hand. I bet you find one area that is wet. If it's just the front windshield when you turn on the defroster and it's more of a film, that's coolant, and then you have a leaky heater core.
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