Trunk Clunk - The Official Porsche Fix

I finally got an appointment last week to have the dealer perform the TSB for the fix (actually it's called a Workshop Modification, because I suppose Porsche doesn't admit it's a TSB level problem, which, by the way, the Service Manager did). Anyway, I persuaded the Service Manager to provide me with a copy of said bulletin, and he did. Thanks to Ken, I was able to send my scanned files to the Forum; here are the links: http://www.planet-9.com/downloads.php?do=file&id=143 From what I could gather, they inserted some foam washers on the bolts holding the weight to the lid. Good News: it helps. Bad News: not enough (at least not on New England pothole infested roads). Bottom Line: I believe Rainers solution is both simpler and more effective. As an alternative, I'm also considering gluing a piece of bubble wrap on the lid to absorb the impact, might be better than felt or weatherstripping, who knows. Progress with a small 'p'

I am... Hearing the clanking and chirping from the plastic border around the rear hatch..is anyone else hearing it from the same place? I think the chirping is coming from the latch...? H & R springs + cold weather + 19s aren't helping me much!

If the "fix" is not a 100% cure I'm not going to bother. (1) Mine is not that bad. (2) I've gotten used to it. (3) I am afraid that if I take the car in to "fix" something another thing will get messed up. Better to just leave it.

mine was fixed by the dealer as well, helps but is still there, with the dampers screwed in the clunk is very visible and when they are about half way there is no clunk but a little bit low frequency boom. i think they should not try and fix it they cannon fix it 100% as is what i thought they could when i took it there!

That trunk rattle In my case, it started about 3 months ago. It's been driving me crazy!!! My dealership seemed to know exactly how to fix it and went ahead. When I picked up the car after a full day, the dame rattle is still there! I think they thought it was the trunk lid and some felt was added. But the really bad one seems to come from the rear left somewhere and I cannot figure it out. It sounds like a loose washer somewhere. I am bringing it in again next week and this time I will drive the car with a technician to make sure they know which rattle I meant. Is there anyone who have this similar rattle? Other than this, I must say this is the best Porsche I've owned.

i took the technician around the block as well, the second time i took it to the dealer, he said "no problem we'll get that", he didnt get anything..am contemplating taking it again..not sure they can do anything else

The official fix completely eliminated a very bad case of the clunks in my car. The only thing you hear now when going over the types of bumps that caused it before is the suspension of the car and the tire rubber going over the road

im extremely envious, did they tell you what the did and how, how far are your rubber damper screws screwed in?

it's fixed Got it fixed last week while getting an oil change ($200). I drove my C from Sacramento to Sanfrancisco this week and I don't hear any significant rattles anymore. No more annoying rattles from the back. Occasionally I still hear humming from the passinger area but it's hardly noticeable. Overall I am satisify with the fix.

I just had what I think is the same chirp/squeak fixed. It is pretty common, comes from the seat belt mount area. Service writer told me it was fixed by adding some felt cloth between the plastic pieces in that area. It's been annoying since day one and is almost strange to be so quiet now.

I just had my dealer perform the trunk clunk fix which involves the installation of a kit. I have not heard any clunk since. Finally! After a year and a quarter of complaining to Porsche and grimacing over many bumps, it's finally resolved.

Does anyone have any more info about this "kit" so i can tell my dealer???

Hoehn Porsche - Carlsbad was very helpful, spent a lot of time on me, and walked out to my car to get my vin which is what it took to find this info. (Did not have bulletin number from previous post with me) The kit is p/n 987-512-125-02, is $81.81, is believed to include an entire new weight, and no they won't just give you the part under warranty (no suprise). Since apparently it may or may not fix the problem, decided to create my own fix if and when I take it apart. Of course they wanted to do the install but would have had to order the kit.

cheers. just called the dealer, apparently those parts are unavailable in australia as yet!

So wait.....We have to PAY for the kit ourselves and it is not covered under warranty??? How does that make sense?

Mine was done under warranty

Well, i guess i will find out soon enough, since I have to also get my clutch slave cylinder replaced.... I will keep everyone posted. :wall:

Oshkey---No no no. Sorry for being confusing. Of course they would install the kit free under warranty. If my engine fell out, I would leave the car at dealer to fix, but would not leave it anywhere for a repair so insignificant and that may or may not work. If kit were $20, I would buy it and perhaps install myself, perhaps not.

ed1: The part number of the Porsche fix is not 987-512-125-02, it's 987.512.925.00. Perhaps your quote is for a replacement weight and that's why the dealer wants to charge you $81.81 for it. The Porsche TSB is surely covered under warranty.

so Has anyone had this done succesfully? Also, any feedback from owners with 19s would be appreciated!

The fix by my dealer seems to have worked. I am so far clunk free. I have 18s and no PASM .

Jay, Who is your dealer in NJ?

**** After playing around with the bumper settings, I've put them at half way out. This cured the clunk on all but the worst bumps. I get no other noises from the rear hatch. The roads in Va. are in mostly good condition & I only hit some tar strips.

Took my CS in about a month ago. Trunk clunk appeared to be still there but much better. They said that they found some loose plastic rattling around near the 3rd brakelight- not sure that I believe them. The clunk has come back worse than ever. I will try the dealer again. I have removed the divider and adjusted the rubber bumpers pads every way possible. Worse than ever. 07 CS 9500 miles 18" wheels no PASM

Does the trunk clunk sound like a rear left shock bottoming out? Or is that the sound of a rear left shock actually bottoming out? bb

My dealer in NJ is Ray Catena who performed the trunk clunk fix.

This turned out to be an out of place sway bar bushing.

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Thom... I too had the official Porsche fix installed by my dealer 2 days ago and am very happy with the results. I tend to be pretty fastidious about spurious noises on my cars and the fix healed the problem completely on my late 2007.

AMEN! My first service was fine except they did a 'fix' on the passenger side rear window that I had not complained about. Now I'm dealing with a rattle/clunk combination window/trunk noise. I made no mention of the trunk clunk because of the same fear you had. I hate it when someone messes with my stuff thinking they are doing me a favor without asking!

Guys: 1. A lot of warranty parts are not availble free unless the dealer installs them. It's part of the terms of the warranty. I've had this with cars and motorcycles. I've offered to install the part myself and they've told me that they have to install it unless I want to pay for the part. I think this is to avoid any possibility of the customer screwing up the install. Standard stuff for BMW cars and bikes and, I guess, Porsche . 2. I went and did the clunk fix on my ' 06 Cayman S with 19s and PASM yesterday. I did the one with the foam tape, not the one with the O-rings. The article said to use 3/4" wide by 7/16" thick, but mine was 3/8" thick....and I only put 3 bands around the weight, not four. I read the discussion about how the weight should move and looked at all that fat tape around the weight and thought, "How's it gonna move with all that on there?" and " wouldn't just two pieces of this stuff do the same thing as 4?". In the end, I compromised at 3. It helped, but didn't solve it. It seems that the noise evident when the rear tires hit a bump but not the fronts. It seems to be more sensitive to the right rear than the left rear. It's much better now with a lot less of a boomy sound when you hit bumps. I was scared to death to take apart the interior bits. I read the instructions at least 15 times and then brought the computer in the garage to read one step at a time. Terrifying! You have to get in there with a small pry bar and really use some force, then they make a huge noise. Once you get the first few out, you can pull the rest out with just your hand. I'm proud to say, I did the mod and got the interior back together without incident. Putting it back together is pretty easy. Make sure all the little square rubber things are installed on the liner side around all the catches. There is a long plastic pin in the center of the liner on the far side (near the rear window). You must be careful to line this up in it's hole and simultaneously line up the metal latch hoop on the hatch in its slot on the liner. With those two things located, you can start pushing (pounding) on the panel to get the catches in. It's just a matter of fist-pounding them back in. I've always avoided this sort of work in the past, but the illustrations made it doable. Then I found another article on adjusting the hatch lock. I did that one. My hatch lock bolts were not very tight, no Lok-Tite on them and one side was higher than the other. I think it had moved. This is probably what happens to the folks who don't notice it at first and then they start wincing. These bolts were really near loose. I put both sides of the latch all the way down, put blue Lok-Tite on the bolts and tightened them up snugly. Then I put the side bumpers at about half way out. That and the clunk fix seem to get it...at least 80%. Next is stuffing my Bose subwoofer with poly fiber....Progress~!:dance:

That part no. is apparantly old, as I tried to use it at the dealer yesterday and they couldn't find it, finally found the right pn though. I was pretty steamed as I'd called last week about the Workshop Mod and was given an appointment, went 55 miles to the dealer yesterday and after two hours they told me they didn't have the parts and I'd have to come back.

My '06 CS's clunk/rattle was a combination of the headliner (replaced) and adjusting the trunk latch weight - both done under warrantee. Thank you Gunter @ Flecther Jones Porsche in Fremont.