vacuumed up all the water filling the spare tire tub following this weekend's downpour - carpool material. Could the sunroof drain tubes really drain this much while closed? Or maybe a split under the roof channel? Literally drips of the package shelf post behind the right rear seat. WT trunk liner actually catches some!
Sounds like a leak somewhere. If you're feeling brave, it's not
that much work to drop the headliner - there are two pop rivets securing it to the roof (very easy to see if you are looking up from the trunk). Then you remove the C pillar, B pillar, and A pillar trim and it'll just drop down. Removing the A and C pillars is a
nightmare because of all the weirdly angled clips, but the B pillar is like three clips and a T50 bolt. I just did this on Saturday while soundproofing the roof of the car.
Also, feel for moisture in your rear footwells. When I had the leaky sunroof, it was also dumping in there and I ended up getting black mold growing under the carpet, which is a nightmare to take out.