Leaky sliding windows T6 Kombi replacement help / advice

[T6 Bird]

If I had a choice from new I would have non-sliding windows. However, I have found a fairly straight forward fix that has lasted over 2 years so far.
When the van was 1 year old the N/S slider started to leak. The dealer replaced it and there have been no issues since.
After the van was just out of warranty the O/S slider started to leak, and, like you I Googled the problem until I got fed up. So I decided to look at the seals and the drainage system. To do this I carefully removed the piece of glass that opens. This exposes the drainage slot that you can't see. The system has 2 slots and a circular hole at the front. Use a thin piece of plastic to clean out these slots, don't use metal as you could scratch the paintwork underneath. Then use a syringe with a piece of tube fixed to it to purge the round hole using water. Thoroughly clean the seals with soapy water then very carefully replace the glass.
Always try to park nose down otherwise any water leak will not reach the round drain hole.
One last thing "don't open the windows".
Unfortunately the seals are too flimsy to prevent leaks, the secret is to ensure the drainage system remains free from blockages.
Hope this helps.

Hi,
I'm going to clean all this including the rubber seals and apply some silicone rubber conditioning grease to the seals then leave them closed. Thanks for the advice, may I ask what syringe/ tube did you use? Thanks

 

[Paynewright]

Hi, I am not far from Leicestershire, which garage did you use to replace yours? Thanks

Thread 'ABR Windscreens Nr Lutterworth'

20 Jun 2025

Just had this company out to swap my OEM sliders for some second hand OEM fixed windows. Brilliant job and very pleased with the care taken and finish.

Chatting to the guys I get the impression they do a lot of these for VW van centres!

Anyway, if you’re looking for glass replacement in Leicester area then worth a call.

• Paynewright
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