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Lexus RX400H 2002 | Rain Water Leak

Lexus RX400H 2002 | Rain Water Leak

Name: Lexus RX400H 2002 | Rain Water Leak
Uploaded: 2021-12-17T00:00:00+00:00
Duration: 3 min 58 s
Description: This Lexus has water leaking from the sunroof, it may be blocked at the bottom, allowing water to overflow.

Video transcript

0:00 So we've got Lexus in today, a RX400H which is a hybrid. So we're going to show you obviously what water leaks we've found so far. So the main issue is the passengers, sorry, the driver's footwell is getting water in. So what we're going to do is we're just going to obviously show you down here. So we've got obviously all of this is wet, so soaking wet. What we're going to be focusing on is up here, this is where your sun roof pipe runs down. So we've

0:27 just took this box out so we can obviously see that there. And what we're gonna do is we've got to get some water, and we're gonna put the water in top of the sunroof cassette. So if we just quickly grab the bottle here with a bit of a tube on the end, and then what we're gonna do is we're gonna come up here by the cassette, and we just want to put some water in where the cassette goes without getting it in the car. So if we put some water in now, and then if we

0:55 come down to this bit down here. If I can just set you up on here a second, so if I set you up there, and then I'm just going to put some water down to simulate that it's out in the rain. And there we go, so we can see the water filling up, and as you can see it's coming through this little hole here. So it's more likely that the sunroof bikes blocked by the arch, and then what that's then doing is obviously trickling down and filling up obviously where the

1:38 driver's seat is. Okay, so that'd be the first one. If we now come to the back of the car, and what we've got on the back of the car, you've got these little bumper supports, which are these ones here and this one here. They're very common to leak. And so what we're going to do is we're put the torch in there, and what I'm going to do is if I just angle my tablet so we can see what's going on. Okay, so we're gonna be focusing down here when I pour the water. And so

2:08 if we put a tiny bit of water on the back of that bumper support, we should see it coming in. And there we go, so we can see it trickling in, so that's that one there, so that's number two. And it doesn't seem to be doing it on the driver's side, but it is doing it on the passengers. But as we all know, we always advise doing the two because they're the same age. And then what we're going to do is, if I position you just here. Okay, so this is the rear air vent

2:39 and what we're gonna do is we've got hose up behind the arch, so I'm just gonna turn that hose on, and what it should show you is it should show you where it's leaking in through there as well. So let me just quickly get my camera set up, and I'm just gonna go and turn it on. Okay, so we've got the hose on now, and as we can see we're getting water dripping off of the vent down the side here. And then what it's then doing is it's filling up, and then it's slowly running off of the

3:16 end of the plate. So as we can see, we've got build up of water here, and then it's then obviously dripping off into the car. And so that would be the third one now. And then just to quickly show you another common fault with these ones here, the welded seams up here do tend to open up. We can see that they're started to crack, but they ain't letting any water in as of yet, but we would advise obviously sealing them up as well. And to seal them up we would have to

3:44 take this roof bar off and then seal it, and so obviously the cracks all sealed in. But as you can see there, that one's cracked as well, and so we would advise doing them once. So there we go, that's everything we found on this one here.

Dec

2021

This Lexus has water leaking from the sunroof, it may be blocked at the bottom, allowing water to overflow.

There is also the possibility that the drainage pipe has split or popped off a connector, we will find out as we go along. The bumper is screwed on, with the screws passing all the way through the bodywork into the boot. This is allowing water ingress and can be fixed with a little sealant.

The rear air vents are leaking because the one-way gate has weakened over time, so rain water is leaking into the boot as it splashes up from the road. These units will need to be replaced.

We would also recommend putting a flexible sealant over the spot welded seams around the tailgate hinges. These are sealed at the factory and painted over, but with age they dry out and crack.

Question: "Why is water leaking from my car door?"

Answer: Water is supposed to make its way through and drain out of the bottom of the door. There are two issues that can happen that can cause that water to leak inside your car. The first and most common is that the door membrane or splash barrier is compromised. Usually these are just a sheet of plastic which over time shrinks and pulls away from where it is supposed to be. Some cars have a metal barrier which is sealed in place, and the sealant can perish.

The other issues that can cause a leak is if the drainage holes are blocked, this can cause the door to fill with water and overflow. This doesn't happen very often, but is typically caused when a window gets broken. The window is replaced, but broken glass wasn't cleaned up from inside the door. As dirty rain water filters through the broken glass, over time it deposits dirt and grit until the holes are blocked.