I had water dripping out from the dashboard, running onto the floor of my Prius today, anyone every had this happen to them. I've drove this car with A/C on before and never noticed this problem, but this evening when returning home one of my floor mats actually had standing water on it when I removed it! YIKES
By ramps or a lift. More than likely, you'll have to find it from under the car, around the heater box.