Purchased 2015 Prius-V with 115,000 about 2 months ago. 3 weeks later lots of water gathering at front floorboards on passenger side and some on driver side. A/C drain plugs clogged and had blown out. Now completely dry on passenger side and still some moisture gathers sporadically under left foot (approx) on driver side. Drain plugs still open. 2 body shops and 1 repair shop just scratch their heads and offer no ideas. To try and find the cause I dry out the area and then try to reproduce the symptoms i.e. drive in rain, take to car wash, etc......nothing....then moisture show up again after a few days. Help! Thanks
Take the carpeting on that side OUT and leave it out long enough to be sure that it is not just a saturated carpet that never completely dries out.