Man, that sucks. I HATE water getting in a car -- it feels like a violation. And it can be so hard to find. Good luck with the search. Luckily, nearly 3 years in on my 2022 and nothing. And I'm going in for my 4th windshield next week!

 

somebody posted before about the drainage of L663's sun roof. I recall there are one drain port per corner, so there should be one above A pillar. Maybe the tube detached at port, thus the water spills downward into the cabin?

 

It’s possible, maybe even probable. I’m not doing any more digging myself, but this wasn’t happening from day 1. Maybe like day 20. Maybe something wiggled loose after a few hundred miles.

it’s either the windshield or a drain. With the amount of automation I find the windshield to be unlikely.

 

had the exact same problem on a '18 RR sport. The A pillar drain for the sunroof on passenger side plugged up. Covered under warranty about 4 months before the end of the 4th year. The extended warranty likely wouldn't cover it, but that's not the problem. The problem is there's too much wiring running through the pillar, and water & wiring don't mix. My work puts me in contact with the delayed consequences of that sort of thing, and the delayed corrosion, even inside the wires, will get you more often than not, and it might be a year or two later. Lots of intermittent electrical problems in those situations. I ordered a new defender the withing a month after that.

 

Reporting back on this…

went in for service yesterday and came out today. Sunroof drain was clogged and had holes in it. Attaching the write up here for the benefit of others.

anecdotally the service adviser told me they’ve had multiples of this and there was a 90 that was so bad that the battery tray filled with water and it eventually shorted out multiple electrical components.

they in theory tested this thoroughly but time will tell.

interestingly the part number on here is for passenger side but my issue was driver. Not sure what’s up with that but not something I looked up til later.

 

Glad they got you fixed.

 

Thanks for sharing the service department's write up. Glad they got it taken care off.

 

Is water leaking into the cabin a common issue amongst these models? This is the first I've read of it and now I am getting a little nervous about my order if this is a common issue. I hate the smell of mildew inside of a car.

 

I don't think it's common, but it happened on a bunch of 90's when they first came out (2021/2022 - missing a body seam sealer in the A pillar area and there was a campaign / service bulletin issued at the time). And this is the first I've heard about it on a 110/130.

Nothing has me sell a car faster than ... water getting in the interior. BTW.

 

Thanks for the reply. I am with you, as soon as there is any sign of water leakage or even mildew smell the getting getting sold immediately. That's one smell that never goes away and when you think it does, as soon as it rains, it immediately comes back. Terrible!!