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Water ingress e89
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Water ingress e89
In my case it was residual... and dried up after going around a roundabout for about 20 mins and mopping up the water that came out.
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Water ingress e89
Thank you so much again!!!! Just out of interest did you ever find out where the original leak was?
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- Senior Member
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- Location: Devon
Water ingress e89
The sealant under the top boot seal was brittle and water was coming in directly above the cubby hole. I put a picture in the other thread i linked for you. You can see the water dripping around the seal. Ive had a couple of e89s and both had that issue. However there are other leak points as you have found out too! Fingers crossed you've solved them all. The last thing you want to do is drown the electrics on the right hand side or submerge the roof pump.. 

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Water ingress e89
Thank you so much! You have been really helpful.... Our boot seal had gone as well. Seems we are getting sorted thanks to you... Take good care xxx
- RobbiZ4
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Water ingress e89
Correct. This process will take some time as the remaining water in the rails is swapping forth and back. If you keep the trims away, it will dry out over the next months, especially in the summer.
Keep care about the pumps foam and put it immediately into a plastic bag to avoid further contact with the remaining water.

Z4 E89 Roof Topics
viewtopic.php?t=130932
Y1 ... Y4 Roof Diagnostic Systems for BMW, AUDI, VOLVO
viewtopic.php?f=23&t=129048
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Water ingress e89
Thank you so much for help 

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Water ingress e89
Is it ok to wrap the hydraulic pump and foam completely in plastic sheeting! Rather than just around the base and sides of the foam? Or would you get condensation forming inside?
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Water ingress e89
Hi ..
We don't have the Z4 any more but we found that in manufacture there is a boot seal which appeared to have poor quality sealant which had gone hard and crumbled rendering the seal itself ineffective. We replaced the sealant with a good quality sealant (we didn't replace the seal itself as it seemed good and also it was nearly €200 to replace. Hope this is a bit helpful.
We don't have the Z4 any more but we found that in manufacture there is a boot seal which appeared to have poor quality sealant which had gone hard and crumbled rendering the seal itself ineffective. We replaced the sealant with a good quality sealant (we didn't replace the seal itself as it seemed good and also it was nearly €200 to replace. Hope this is a bit helpful.