heinrich

Seattle is getting to where I'm seeing many arks being built in people's back yards. Whole neighbourhoods are sliding into the water. Anyway, WHAT IS UP with the rear hatches on some 928's? I've seen so many that leak there. One leaks at the top of the rear hatch seal, I tried re-forming it there and that seems to have worked. The other one isn't at the seal but rather inside the damn hatch somewhere. Like the lock maybe. Guess I can test that theory with some duct tape ..... The S4 doesn't leak, thankfully.

Sab

Mine also leaks at the top of the rear hatch. My last S4 same thing.

worf928

Heinrich, look closely at the bolt pass-through for the tail light assembly. It's a big-A$$ed (2") rubber seal with sealant around the edges. I'll bet water is getting in through the old, crusty, sealant. Open the hatch and pour some water down the drain channel between the sail plane and the hatch gasket (once on the left and once on the right). Watch the water drain into the hatch area through the rubber seal.

worf928

Time for a new hatch gasket.

heinrich

Dave I am 150% sure there is no problem there, it is coming from under the rear hatch trim .....

Chris

Hmmm, mine was from around the hatch glass, had to remove the top interior hatch panel and then it was obvious. The little clips that hold the glass trim in are fixed with (screws? I can't remember) items that go straight through to the interior.

I removed the offending part and put some sealent and the put it back together.

Dave C : My seals around the rear light screws were missing completely, fixed that too.

Chris

heinrich

I suspect you have the answer there.

RDS928S

Heinrich,

my rear hatch leaked at the seam between the upper rear hatch trim and the roof liner. I replaced the rear hatch seal and no more leaks.

RDS

heinrich

RDS, I will look but I see water inside the hatch .... I suppose it could be dribbling into there from the seal. It appears to be only at the rear of the car though.

jadavis01

I have the answer to our problem....move to a dry climate

heinrich

Yeah ... not so much

Pfunde

After my rebuild this summer i had lot's of water comming in and couldn't figure out why. Everything was put back together as before.......at least I thought so. When the rubber seal was put back on I some did it "opside down" or "inside out". The rubber seal was actually looking as it was put on rigth but....no. Swapped it around and voila, no more water.... Just in case you take of the rubber seal to check it, make sure it goes on the rigth way !

SharkSkin

Heinrich, I spent some time chasing this problem on my car. It was coming from two places:

1) The seam where the rear hatch gasket glues together near the latch had split, so that when water ran down the C-pillar and onto the rear lip, it would drip in through the split.

2) The lock itself was not sealing. My cylinder is recessed, and I was able to stop the leak temporarily by putting a quarter into the rubber grommet - it was the perfect size to seal it off! This localized the problem; if your cylinder sticks up you may need to use tape. So anyway, I replaced the grommet -- no joy. Finally I replaced the lock cylinder itself. The little door that moves aside when you put the key in was not sealing because the outer bezel(the part with the rectangular slot, that the little door closes against) had been pushed in to a concave shape over the years.

Randy V

I also have the leak at the top hatch gasket area.

The leak has caused some minor warping of the top of the interior trim piece that surrounds the hatch.

How can I correct the warped trim piece?

BC

The glass is in a bed of poly-whatever, or rubber, and then clamped down with many little holes drilled through the edge of the actual metal hatch. Many many places for water to get through, and with the constant torquing of the whole hatch, the rubber does not last as long as some may thing.

Porsche, the company, and the 928 the car, are great - mechanically. Electrical, HVAC, window sealing, and tactil feeling on many surfaces, are, uh, lacking is a good word.

Along with the glass sealing issue - since when do you CLAMP glass with a metal anything?