Windsreen Drainage Channels

[davina]

They must be blocked as rainwater is just sitting in the cavity that holds the battery etc. Problem is - I cannot locate the drainage hole - Can anyone help? It is a 1999/2000 Passat
Many thanks

[MalcQV]

Welcome,
There are quite a few threads on this. Do do a search on "flooded" or similar from the "search" button up at the top.

An example of one such link (http://www.vwaudiforum.co.uk/forum/showthread.php?t=3054&highlight=flooded)