Hello all, I drive an 2002 audi a6 avant 1.9tdi se 130pd.I have read horror stories where the pollen filter has let rain water in through the filter housed in the near side bulkhead. Mine is not leaking in at present but I would like to know how to prevent it happening.I have looked on other sites which tell you to make sure that the housing cover sits snugly, mine hasn't got a cover.I have removed soggy leaves from the right hand side of the filter but would like to know what to do to prevent rainwater getting in. If it does get in it is not just wet carpets it also ruins the convenience ECU located under the front passenger seat.and can be quite a costly repair. Thanks for your advice.