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Just an update - parked the car for extended periods of time 7 times total. Once the front dropped to the ground overnight. Another time it dropped 1/4" within 10 minutes and then I moved the car it went back to normal height and did not drop afterwards. And the other 5 times the car did not drop at all.
So most of the time it does not drop, and when it does drop, it drops quickly.
An update. Took the car back to mechanic - they suspected pump failure, but did not want to deal with the refill process, so the passed it on to the dealer. The dealer replaced the pump and two more struts (both fronts). That's another $8K. WTF... The car is fine now, but how did I get pinhole leaks in 3 struts at 65K miles? What did I do wrong? No one else seems to have such problems. Also, just two weeks after the warranty was over.
How does the home mechanic detect this -- soapy water on the struts or around the compressor?
thanks,
Mike
This is a good start. The short answer is it's a very very tough system for the home mechanic to troubleshoot, especially since the Durametric is pretty much worthless for this system.
Im never suprised @ how unresourceful some are. You can get a PIWIS for far less than that. Its not easy, you have to know where to look. A real one. I just bought a Bosch kts 650 based PIWIS 1 with 670 upgrade( motherboard,memory, ram) and a 120gb ssd. Its fully functional and installed from original dealer base discs, not vm ware , and no time bomb v34, the last version before PIWIS 2. No china crap 100% authentic. Its boils down to how bad you want it and how much work you put into making it happen, like anything else.
Well, why don't you help the community and spell it out for some of us unresourceful members. Post up how one can get a PIWIS.
Last edited by RAudi Driver; 11-05-2020 at 05:23 PM.
SummaryThere is increased friction in the air spring compressor valves at temperatures below ?13° F
(?25° C). This can result in a situation in which the maximum control current is not sufficient to actuate the valves. As a result, a warning message will be displayed in the instrument cluster and Porsche Active Suspension Management (PASM) will stop working temporarily. Re-program PASM control unit using the PIWIS Tester with software version 33.010.030 (PIWIS Tester 3) or version 17.100.030 (PIWIS Tester II) or a higher software version installed.2 Affected Products
This is a good start. The short answer is it's a very very tough system for the home mechanic to troubleshoot, especially since the Durametric is pretty much worthless for this system.
the home mechanic can detect air issues. I have some info coming up to determine if it’s a valve or actual top seal that is failing
This morning the "chassis failure light" illuminated twice. Once at start-up and then again shortly thereafter. I recently started parking my 2011 CTT outdoors. It was cold this morning, probably close to freezing. I've read this thread and wonder if it's "cold related" as my CTT was always parked in my garage prior to this?
This just happened to me. The fuse was blown and my indy said the compressor is also out because it overheats. The compressor was replaced by the previous owner just last year, is it possible it would go bang so soon? I did not notice any leaks as if I parked the car and left it for a couple of days the ride height still stays the same. Moved it to another indy (porsche specialist), fingers crossed they do not need to replace the compressor.
Had a similar issue on my 957. Not sure what differences there are with the 958, but I would start by checking the 40amp fuse that controls the air suspension compressor. If this is blown, replace and listen for the compressor - if its running continuously then you will need to replace the compressor relay.
any pictures or diagram of where this fuse is located? asking for a friend, 2,252 days since this was first posted... lol
Side note - thinking about how many of us with various Cayennes have experienced some version of "Chassis System Failure" and a few things in common: High Elevation and Low Temperatures. Like, really cold. And really high.
Got me thinking... do they not have high and cold places in Germany where these babies are conceived? I mean c'mon expert German engineering, c'mon!
01-30-2017, 06:46 PM
