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Old 07-11-2017   #1
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Panoramic Sunroof Leak Into Car

2010 Fiat 500 Lounge 1.2 .

Noticed rainwater ingress into the drivers side footwell carpet. (Irish Car so RHD). I have stripped back the insulation and the carpet and have methodically powerhosed down the car one area at a time to narrow down where the rainwater ingress is coming from.

It is not windscreen or scuttle related. The rainwater ingress occurs when the water is sprayed onto the roof around the sunroof area. The 500 doesnt have drain tubes from the sunroof and instead relies on a profiled channel in the roof to carry it away. In heavy downpour conditions or powerwashing there can be a slight buildup in rainwater around the sunroof that spills out over the door - perfectly normal for downpour conditions.

However the last few months in thes conditions i have found the drivers side floor getting wet. When i stripped back the carpets the insulation i pinpointed the location it was coming out to what i will call under the step into the car, where the wiring runs hidden under a plastic profile. The water must be making its way down inside the roof to the door channel and then down to the floor and coming out under the step into the car, then the floor insulation soaks it up and spreads it. Its a relatively large amount of water getting in now.

Can anybody offer any advice on how to proceed. Honestly part of me just wants to drill a small hole in this area and let the water pour out, but thats just a work around really.

Anybody any ideas on how to proceed on this ? Is taking off the sunroof to pinpoint the location of ingress possible ?

I have the car 3 years and this is a recent issue so i would imagine maybe a rubber is perished or similar. Any help or advice appreciated.
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Old 08-11-2017   #2
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Re: Panoramic Sunroof Leak Into Car

From what youve described..
I would suspect the door/ window seals as a 1st thing.

Is this from parking on non.level ground..??
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Old 08-11-2017   #3
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Re: Panoramic Sunroof Leak Into Car

Honestly dont think its window / door seals but i will do some more investigation at the weekend.

The parking spaces i use would be slightly off level but not enough to warrant R.W ingress.

If i saturate around the sunroof with water and open the drivers door with the carpet and insulation stripped back you can actually see the water seeping im from the

This isnt my car below, but it shows where the water is entering under the wiring that runs under the step into the car. It is not entering from the door seal or door . It is literally running through the body/ frame of the door surround/pillar and coming out at a joint from the floor pan to the step.

https://photos.google.com/share/AF1Q...ZXQlFPZGxlYmt3

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Last edited by Outkast; 08-11-2017 at 09:31.
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Old 08-11-2017   #4
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Re: Panoramic Sunroof Leak Into Car

Cant view the link...

But must be some joint that is failing..if water is traking down through wiring.

Have you looked on the parts fische to see where the motor wiring is routed??

That would be an obvious water path
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Old 08-11-2017   #5
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