Wet spot under driver mat

[NSRoamer]

@NSRoamer there is a hole near the driver’s door where is generally drains although sometimes it drains near the passenger side. Yes an annual replacement is very concerning but what concerns me more is that it seems to occur in gen 1 & gen 2. Let me know if you get more insight

Good thing I had the windshield replaced with OEM at the SC. Turns out the Fuyao windshield (last owner) was very poorly installed (probably by Safelite). Fuyao supposedly makes the OEM windshield.

The loaner had the dreaded condensate leak - figured I'd check the T when I picked it up - it also has the leak. I talked with one of the senior technicians at Gaithersburg SC - he explained the condensate drain situation. Because the vehicles are made to wade in 30 - 36 inches of water, they can't use a standard gravity drain - that would let water back into the evap coil housing. Rivian designed some complicated drain system that keeps water from coming back in. This for the (probably) relatively few people who will actually take their vehicle through that much water.

He did say there are drains on both sides (just confirmed - also a hole near the passenger door). Some of the leaks seem to be caused by poor / faulty installation, some caused by a crack in the HVAC housing. Seems like cracks in the HVAC housing are a a design / engineering / production problem that could be fixed. The service advisor I was working with said their SC has not had any AC leak comebacks.

I didn't see any record of the "drain valve" being replaced on the T. I have a trip coming up - will revisit the HVAC leak after I get back. In the meantime, I remove the rubber mat when parked and have a fan blowing on the carpet - 120v at home and will use a USB fan while on the road.

Now undergoing constant monitoring - there’s a chance the T had a windshield leak...

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[Fmc]

@NSRoamer thanks for the follow-up. I have put my rubber mats back in and I am dry after a week, I will continue to monitor the moisture. I am glad they know the cause of the problem but it is unfortunate that it is because of over-engineering. I am also glad to know it is ‘normal’ for it to drain on either the driver or passenger side.

 

[Hereforthesnacks]

Because the vehicles are made to wade in 30 - 36 inches of water, they can't use a standard gravity drain - that would let water back into the evap coil housing.

that’s really interesting. My Bronco can ford 36” of water, but I haven’t heard of ac issues like this. Cars have been able to ford that much water for decades. Guessing it’s more of the bad assembly or cracking you refer to.

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