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  #13  
Old 10-16-2010, 11:24 PM
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Re: How about reliability of QL(air suspension)

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Originally Posted by Jim Hef View Post
Another dealer with some ill advised spin:

http://www.panix.com/~clay/cayenne/suspension.html

Possibly he was referring to the VW Toureag's air suspension.

Continental ag is the quadra lift supplier and so it is highly likely they are also the Porsche and toureg supplier as well
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  #14  
Old 10-17-2010, 12:24 AM
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Re: How about reliability of QL(air suspension)

Possibly for the VW, but as I showed in the link, the Cayenne has a sprung suspension. Do you know of an option for that Porsche that uses the air springs?
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  #15  
Old 10-17-2010, 12:36 AM
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Re: How about reliability of QL(air suspension)

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Originally Posted by suvowner View Post
My dealer told me this system is what porsche has been using for a number of years now so it is proven in that sense
Maybe the same supplier, but this is the first closed system to be used in a mass produced personal vehicle. I can't say how it will hold up, but given most personal vehicle air suspensions they are high maintenance. The one draw back to having a closed system is, if the systems develops small leaks it will be unable to compress outside air to keep the suspension raised. With most air suspensions they can have small leaks, but still continue to function by pumping more air back into the system. If the system is unable to keep the suspension at normal ride height it will lock the mode or be crippled to the bump stops, which then you can only drive at 25MPH to reach assistance.

Not saying I do not have faith in the company, but I only give it a few months before we see problems being posted.

It is a cool feature but as most call a WOW factor, tradition suspension is for daily use. I think everyone should own at least one vehicle with air suspension before making their own evaluation.
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Old 10-17-2010, 11:29 AM
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Re: How about reliability of QL(air suspension)

I would think the pump also contains an outside draw port and can compress. This way it can maintain a set volume and pressure in the system. To build it without this type ability would be completely rediculous from any engineers or mechanics standpoint.
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Old 10-17-2010, 12:26 PM
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Re: How about reliability of QL(air suspension)

My wifes 2005 expedition has it and never a problem
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Old 10-17-2010, 07:40 PM
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Re: How about reliability of QL(air suspension)

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Originally Posted by parker View Post
I would think the pump also contains an outside draw port and can compress. This way it can maintain a set volume and pressure in the system. To build it without this type ability would be completely rediculous from any engineers or mechanics standpoint.
I would think so as well....otherwise why would it even be called a compressor, lol

However the compressor clearly isn't large enough to show it has the ability to compress outside air, plus it wouldn't be a closed system if it could. I can't wait until we are able to get more detailed information on how the system works.

Does anyone on this forum work at a dealership? If so can someone post the shop manual for the 2011 GC?
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Old 10-17-2010, 08:25 PM
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Re: How about reliability of QL(air suspension)

someone send out the Milous signal.....
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  #20  
Old 10-17-2010, 08:49 PM
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Re: How about reliability of QL(air suspension)

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someone send out the Milous signal.....
Just put up smoke signals with my cigar.
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Old 10-17-2010, 08:59 PM
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Re: How about reliability of QL(air suspension)

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Originally Posted by Jim Hef View Post
Possibly for the VW, but as I showed in the link, the Cayenne has a sprung suspension. Do you know of an option for that Porsche that uses the air springs?
Air is used in the Cayenne Turbo.
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Old 10-17-2010, 09:04 PM
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Re: How about reliability of QL(air suspension)

so this was released what,,,,,a month ago,



HEY OP, NONE FAILED IN A MONTH . if that ffects your buying decisions....God Bless!
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  #23  
Old 10-26-2010, 04:26 PM
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Re: How about reliability of QL(air suspension)

The other closed loop system is the Porsche Panaroma.

All the other system are open loop.
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  #24  
Old 11-01-2010, 07:48 AM
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Re: How about reliability of QL(air suspension)

New information, the compressor only compresses the air supplied inside the system. It will not pull outside air even to limp home. The system requires 99.99% class 5 pure nitrogen.

If the air suspension system is fully depleted of air it can be refilled using a scan tool and Air Suspension Refill Tool - 10247 which is used with a nitrogen supply tank (can be acquired at a local gas supplier). The nitrogen must be Purity Class 5 (99.999% pure). The size and volume of the nitrogen supply tank will determine how many air suspension systems can be filled.
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