VW Tiguan 2014 Part 1 | Sunroof Leak

Video transcript

0:00 OK, today we have a 2014 Tiguan in today for our water leak procedure, so we're just going to show you what we've found so far. So we've got our special machines, we're going to check the carpet first of all to tell us if there's any water. So if we just put our machine down here, now that's telling us that that's got moisture underneath the carpet, and up the bulkhead sponge as well. If we come round to the driver's rear, we get a slight gauge here, 10, 15, so the more I push it down. So we've got a little bit of moisture in

0:45 this back corner, but nothing in the middle. So it's mainly really wet at the front. Coming around to the passenger rear, passenger rear is dry, if I can just show you. So we've got no readings on that carpet there at all. But if we put it right here, that's it, no readings on this side. So that's a good sign, so it's all nice and dry. Passenger front, so we're not getting any signs of any moisture underneath this side here, so that's good. Okay, so from that test we know that there's a little bit of moisture

1:26 in the back of the footwell, and it's quite wet in the front. So what we're going to do is we're going to go up on the roof. So we've got the cassette here, so we can see that it's very dirty in places, and so that's obviously what's going to cause it to block up. So if we put a bit of water down the front of the scuttle area, well, the sunroof area, the cassette. Now what that should do is it should use these inner pipes on the A pillars, and then come out

1:54 at the front of the car, which it is doing. And I'm just going to repeat the same process on the back, because it isn't releasing through the back. So I'm just going to set that up.

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22
2023

James tests for moisture, which gives us an idea of where the leak might be coming from on a car with very little rain water ingress.

Obviously, if the car is completely soaked, this is less useful as a clue to where the leak is, but we suspect we already know. We have done an awful lot of Tiguans, and they do tend to suffer a problem with the sunroof drainage getting blocked. We are getting very good at doing these, we have had a lot of practice.

James will show you what he found in part two.

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