Quote:
Originally Posted by umz
Hi All,
Apologies for the late reply on this.
I took everything step by step, the most common thing that everyone talks about:
1. Rear Vapour Barriers
2. Sunroof Drains
3. Yellow Bulk Head Grommet
1. I started with here, resealed both barriers, this stopped water ingress from rear driver side. So that was the issue there.
2. Had these checked out. A smoke test was carried out, found one pipe blocked, had that cleared. Coincidently it rained heavily that evening and water came through again, so i know this wasn't the fix, however happy that the drains were all cleared out.
3. Last thing I looked over, found water coming from there after several tests. I got to the grommet from under the glove (too much in the way in the M5 engine bay). Considering my car is a daily and not garaged I needed to get the car sorted ASAP, so I re-sealed with windscreen bonding (Yellow grommet would have taken a week to arrive).
I used a pliers to pull the grommet back, cleaned all the gunk from that area, sealed the outer edge of the grommet, used the pliers to put back in place and pull back on myself, this sealed the outside of grommet for me. I then sealed the inside of it too to ensure a solid/permanent fix.
Then came the drying of carpets etc took me forever doing this. Used an extractor and heaters. I took the passenger seat out too as its impossible otherwise to lift carpet properly.
NOTE: there was a a lot of water under passenger side too, the front carpet doesn't really get wet due a polystyrene block being under the front passenger seat which lifts the carpet.
Hope the above is helpful for anyone currently facing this issue or helpful for anyone in the future.
Any questions, feel free to drop me a message.
Thanks.
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I really hope this works for you as this landed me with a bill of around 4k to sort out!!