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Water in Avant boot lid

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by DALE_AVANT, Dec 4, 2012.

  1. DALE_AVANT

    DALE_AVANT Member
    Audi A4 Audi A3 Audi Avant Owner Group

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    Hi all.

    There is water getting into my Avant boot lid that seems to have got there via the heavy rain we have had. When I raise the bootlid it drains away quickly. Water can also collect on the rear retractable cover over the boot space.

    It is not due to the rear washer pipe as I have not used the rear water, any ideas anyone?
     
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  3. Av4nt

    Av4nt Well-Known Member
    Team V10 Team Sprint quattro s tronic saloon Audi S6 Audi Sport Owner Group

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    No idea but i have the same issue with my rear passenger side door...leaks into the car onto the seat and really fks me off!!! after heavy rain also. all the seals appear fine etc so i dont know I gave up looking and trying lol
     
  4. moggie93

    moggie93 Member

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    I've got the same problem.. Looks very like the water is getting in thru' the seal on the high level brake light..
    M
     
  5. DALE_AVANT

    DALE_AVANT Member
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    Is it a replaceable seal??
     
  6. DALE_AVANT

    DALE_AVANT Member
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    Anyone solved this problem before?
     
  7. DALE_AVANT

    DALE_AVANT Member
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    Surprised that no-one has had to do this job before :(
     
  8. southylad

    southylad Active Member

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    are you sure its not getting in round pollen filter under windscreen then traveling down vent to rear passenger footwell very comon fault with passat and a4
     
  9. moggie93

    moggie93 Member

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    Hi there, sorry I've taken so long to reply.. I just replaced the whole light unit as mine had a few cracks and broken bits on the top side of the light.. As hard as I tried I couldn't remove the unit in one peice.. I would try some clear silicone round it to see if that solves the problem. If it does you then know the culprit.. Good luck.
    M
     
  10. DALE_AVANT

    DALE_AVANT Member
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    Thanks for the reply but it's in the bootlid
     
  11. DALE_AVANT

    DALE_AVANT Member
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    Could it be coming in via the bootlid hinges??
     
  12. DALE_AVANT

    DALE_AVANT Member
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    Anyone?
     
  13. Greeny233

    Greeny233 It's all about the V8.
    Team V8 Team Silver Audi Avant Owner Group Audi S4 Audi Sport Owner Group

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    I'd sit in the boot and get someone with a hose to soak the car and wait for it to start leaking. That'll show you where it's coming from.
     
  14. Mike_B

    Mike_B Active Member

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    Almost certainly the seal round the high level light - it's such a faff getting the rear trim off incidentally. I suggest using "dum dum" compound rather than silicon. It's a non setting, black sealant which is used on Land Rovers and other British cars in a variety of contexts. (Search "dum dum sealing compound"). It's generally used as a leak stopper - something all LR owners will be familiar with!

    Take a blob, roll into a thin sausage, force into the gap. I've found an old credit card to be helpful, and the round corner helps give a smooth, neat finish. Clean residue with white spirit or turps.

    I had a similar problem - this solved it. Dum dum is very useful for all sorts of other little jobs where you want a sealant which remains flexible and won't dry out / go hard and brittle.

    Mike.
     
  15. moggie93

    moggie93 Member

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    I was replacing my rear wiper arm today and it looks like I've found another possible source of the water ingress into the tailgate..after trying my rear wash wipe I noticed water coming out from the rear wiper motor.. Ill strip it out and see if I can find the source of the problem..
    m
     
  16. DALE_AVANT

    DALE_AVANT Member
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    I reckon water must be coming in at a higher level on mine as it is dripping onto the rear parcel shelf, so I'm thinking the the high-level brake light might be allowing water in?
     
  17. DALE_AVANT

    DALE_AVANT Member
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    So, bootlid interior trim removed today and it looks as though water is coming in at the high level brake light. Having removed that and inspected, the seal on it looks pretty rubbish so will refit with some form of semi-permanent sealant. Can't seem to find dumdum anymore, anyone know of a suitable way of sealing the light unit that wont leave odd streaks down my car when it rains :think:
     
  18. Mike_B

    Mike_B Active Member

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    Hmm - it seems Dum Dum is no longer produced. Sorry about that - -
     
  19. DALE_AVANT

    DALE_AVANT Member
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    No problem! Thanks for the heads up anyhow :icon_thumright:
     
  20. DALE_AVANT

    DALE_AVANT Member
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    Anyone know of a suitable sealant?
     

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