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<div>OK... I took my Cayman into service last week b/c of a few concerns, but the only one they agreed w/me on was the loud sound fromthe hatch area. Every time I go over a small bump (which I avoid if all possible!) it sounds like a piece of luggage is loose and makes sound as if something is put together incorrectly back there – it’s a loud bang. The Porsche dealership said the paneling was not installed properly (fantastic!) – quoting, however, that theyre-secured the clips, remounted the panels, and the problem was fixed. Well, while driving it over the weekend, I thought it was fine... but when I drove over a minor road indentation, Iexperienced the same noise. I’m calling the service dept. regardless, but wanted to hear the Forums thoughts and/or comments.Thank you! [/quote]</div>
I get a loud suspension clunk driving over some speed bumps (the older tall skinny variety) with PASM on soft, but not on firm. Try changing PASM setting if you have it.
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
That's the sound - a clunk! I do not have PASM. So I gather this is normal? If it was a big bump, I'd understand, but minor road defects...hmmm.It's a little annoying.
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
Same here. We had a thread on this a while back. The car sounds like a van from the back over bumps - sounds loose. But I think we'll have to put up with it. The thing that is unacceptable is small rattles from the rear. Mines in again next week to have it fixed. The plastic is rubbing causing rattles - very very annoying
How about test driving another Cayman for comparison? I only get that clunk over the speed bumps at work. Not anywhere else, so your situation may be different.
Ah...I missed that thread. OK, glad I'm not alone and thanks for the feedback.So we all drivean expensive, clunky car - great! LOL. Porsche fixed my rattles... for now.
There's been quite a few complaints from folks on here about the poorly installed hatchback inside panel... so on that you're not alone, although my car didn't have that problem. A few days ago, I went out and really took a good look at the hatch, and what I found is that the way it's engineered, it does have some built-in play that is soaked up by the rubber bumpers. A closer look reveals that the bumpers have little springs under them that keeps them tight when the hatch is closed, but when you go over a substantial bump, I think the springs compress and there's some natural movement of the hatch up and down - and thus, the clunk.
My guess is, if it didn't have that play in it, after a few bumps, the window would probably fall out or or crack, or some other such malady, so it must need that little bit of play to absorb the shocks. I get the same sound from my hatchback'ed Honda Insight Hybrid car when going over bumps, and a close look at it revealed the same engineering. So, 'tis the nature of the (hatchback) beast, I guess...
Also, I've been using the little metal rectangular latch to close the hatch, but has anyone noticed the built-in handle just up from it? You turn your hand around to face you, slide it into the handle and pull down the hatch.
brad
__________________
21-year PCA Member
PCA DE Instructor
Brad, handle; no I didn't notice it. Guess I have to go out to the garage and look. What do you do pull it down with just enough force to close it and then release it going down?
Thanks Brad! I appreciate the hatch analysis...saved me from tearing apart my car next weekend. I also get curious about the engineering of my cars. But this one is challenge...sometimes frustrating. The Cayman is completely different from my last car - everything is neatly tucked away. Isometimes missnot being able to look atthe engine. Oh well...but I do love my Cayman more - despite the clunks, rattles, etc. Anyway, what you wrote all makes a lot of sense, as I have never owned a hatchback. Perhaps I'll take scopacetics advice and test-drive another...just for comparison purposes.
So funny, I was just reading my manual - b/c of my curiosity of how the hatch was configured (with no luck of course) - and I stumbled upon the diagram of the pull down for the hatch. Go figure! I'm sure we'll discover other little details down the road.
lcarr - you're welcome, especially if it kept you from tearing your car apart... the hatchback on this car is really large and must weigh quite a bit... trying to keep it from moving around under all circumstances had to be pretty impossible, I htink.
Santa Fe - funny thing is I still hook my index finger in the metal rectangle - the few times I've tried to use the actual handle, I always feel that I'm not going to get my hand out of there fast enough - because the way the handle is positioned, one has their hand in there up past the wrist... that's a lot to move out of the way so quickly.
brad
__________________
21-year PCA Member
PCA DE Instructor
so what is the service bulletin re-bump stops as reported in a previous thread?,sorry i dont recall who said it but it was for just this problem . i have the same problem and are just trying to free up some time to take her into the opc for a fix ,but i must say i feel a little worried now that the answer i going to be'THATS NORMAL' well i have driven many cars with large hatches and i can assure you that i have never had this problem before ,so i suspect a defective batch of bump stops with springs which are too week . i hope ths can be sorted because the road in the uk have lot sof bumps .
actually forgot to add that i have also a manual cayman to compare against and this car does not have the same problem so its not normal
Last week I mentioned a rattle was coming from the right side, either from the hatch or above the right passenger shoulder, it happened first time with my son (only 50Kg). I was closed to discuss with the dealer when I discovered that this nasty noise coming time to time over humps or bumpy roads or with the passenger (to who you want to show how nice is your car....) was the result or temporary and very light contact between the headrest and the roof garniture.
I have moved the seat in all directions, leaned more or less the back of the seatto confirm. Since I made the good setting, no noise at all.
At least one way to investigate for those having rattle complaints.
I agree...it's unacceptable for an expensive care. That being said, the Porsche Service Foreman would like to takeride w/me on Monday morning to hear the 'clunk' sound I describe. Perhaps it'sa defect, week springs (nice!), but let's get to the bottom of it... I rather be there and hear what they sayin person, then get a call that it's fine and ready to get picked up. This is why I've always been weary about buyingthe first model...usually good to wait a year for all the kinks to be resolved. I still love it, just want it to be near perfect.
Of course I'll report back after I get the diagnosis.
