Sealing tail lights - water leak

Mark Rosenkrantz speedracer.mark at
Wed Oct 26 12:48:20 PDT 2011

Step #1; put lock carrier into service position
Special tools required; flashlight, paper towels (Audi special towels are NLA), beer, and hose with water source.

Lock yourself in the trunk with flashlight and towels.  Use a friend (paid in beer) to soak the trunk with the hose.  Hopefully they will also let you out.  Note; wives and disgruntled girlfriends are a bad choice here, unless you volunteer them for trunk duty, in which case you get to drink the beer!

Mark Rosenkrantz
Typos sent from my iPad

On Oct 26, 2011, at 3:06 PM, Dave C <dconner at> wrote:

> I don't think the 5000 (type 44) has a rubber bumper like you have on the
> 4000.
> Even if it did, I don't think that would cause water to accumulate inside
> the sheet metal portion of  the trunklid itself.  That's what mine is doing,
> which implies the plastic housing is not cracked ... the plastic isn't
> filling with water.  The sheet metal part has water in it such that when I
> lift the lid the water empties of of the metal into the trunk, and overflows
> into the trunk when the lid is closed.
> I'll give the 3m 08611 butyl material a try ... sounds like I've been using
> the wrong stuff.  I see it's available locally at NAPA for about $20.
> Thanks!
> Dave C
> On Wed, Oct 26, 2011 at 2:17 PM, Tony Hoffman <auditony at> wrote:
>> I forgot about that, but that is a common issue on the 5000's as well. Yes,
>> look for a hole right at the corner where the trunklid closes. Good call!
>> Tony
>> On Wed, Oct 26, 2011 at 12:37 PM, Dave Fain <kf21857 at> wrote:
>>> I used the 3M strip caulk on my 4KQ and stopped the leak.  There was
>>> enough
>>> in the package to do 2 cars.  As I recall, there was a big round rubber
>>> bumper on either side that mounted through a hole right where the water
>>> runs
>>> down.  Probably the same on the 5000.  Maybe yours are missing?
>>> Dave
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