Through some searching I came across threads (in multiple forums) about Panamera air suspension being filled with Nitrogen 5.

I am not exhibiting issues yet, but have been reading many many posters talk about their issues with shocks, so I guess I am preparing for eventual repair.



Can someone chime in on this, to confirm with certainty?

Also have questions:



1. What is the exact reason for using Nitrogen here? Just corrosion management and inertness of gas?

2. What if you do not fill with Nitrogen and let compressor use regular air?

3. Can someone confirm that the air shock has to be filled with gas to specific pressure (I read between 16 and 17 bar - max of 249.9psi)

4. Is there a special process to do the fill? One shock at a time or all shocks connected and filled at once?

5. Where did you get your setup to do your own fill?

6. How do you compensate for gas trapped in line when filling the shock?



Thank you as always.

 

I don't have answers to all your questions but the basic reason for not using air is moisture. Air contains water, this moisture can condense and freeze causing problems such as valves sticking. Just like a refrigeration system the air suspension system would have a vacuum drawn to remove the air before filling with N2. You will need the equipment to purge and fill the system to the appropriate pressure. I'd guess it is similar to AC equipment but uses a high pressure N2 bottle as the source.

 

Just found something like Will keep looking for better priced ones.

 

So you purge your system of air and inject N into the system. The N will slowly leak out and then be replaced with ordinary air which has some % of water in it, so this "fix" is just a temporary one at best, right?

 

 

https://www.6speedonline.com/forums/...ml#post4639818

 

I did see this thread, and it does have some very useful info. However, multiple places, there are references to PIWIS, where instructions are located, and it is stated to follow instructions in there.
Those instructions are critical, and are not displayed.

My specific questions are:
1. Where is the access point I would use to evacuate entire air suspension system of air and moisture?
2. I assume once I know #1, I will know which access point is used to fill the system with Nitrogen.
3. How would I go about checking pressure in the air suspension, to see if it needs top off with Nitrogen?
4. I really would love to get instructions on how to rebuild the compressor for air suspension. Mine is not failing and not running all the time (actually do not hear it run all that much), but I do want to remove the compressor and replace any rebuild parts to refresh the unit (will make the pump more efficient and extend its life).

Thank you for help.

 

Just came across this:
http://docplayer.net/23858852-The-cl...-panamera.html


...and nothing about nitrogen in the system....

 

This is straight from the service manual...
asks for nitrogen for leveling system diagnostics and refill...

 

I know, I posted this
But what I want to say that info is different.

 

lol, you posted that page from your source, this is from my service manual

Dealer confirmed when I asked that fill is Nitro 5 gas.
Its possible previous work on car eliminated it.
Hoping someone with air suspension and long experience with only air in them, can chime in.

 

If I write that I posted this (year ago) it means exactly what I'm writing:
https://www.6speedonline.com/forums/...on-help-2.html

and of course, dealer OFFICIALLY will say nitrogen, and it is everyone choice to believe into everything or use your own brains. If I would have easy access to fill with nitrogen, probably I would do that, but from other side I had Audi S8 V10 with air suspension and it had air in the system, and I know present owner has no issues with it, I hadn't any, and car is 10 years old already; I even didn't bothered myself to fill tires with nitrogen, which is easy peasy thing and cost zero money for me... I hope you will understand which direction I'm trying to turn this discussion .

 

all I can think of nitrogen does in closed air system is leave air out and prevent moisture. With compressor spec saying full inflate of system should take less than 4 seconds, means less tolerance inside, means moisture=rust over time = failures.

Not trying to argue with you. Trying to tell you that those working on these cars for years do it in a specific way to avoid future problems. i am sure Porsche did not design it such way just because they had nothing better to do. My conversations were with techs at dealer not as an official communication, but conversation between friends. maybe now you get an idea how I got the info.

Because other cars do not have issues on air does not mean that directly applies to Panamera system. There are often differences in design that a normal person is now aware of. Something to think about.

Access to nitro is very easy at any welding shop. for 120 you can have a setup with gas and regs ready to connect. all you need is diags program to access valve block.

Good luck with your car.

 

OK,
I was thinking (and even panicking) in the same way then I found this in Porsche manual; started arranging nitrogen, connectors, and software ... meanwhile spoke with Porsche technician (unofficially), I wrote that before, and besides that with indy shop which is specialized in air suspension systems repairs all brands cars; and advice/answer was the same: be realistic, 'how much you will gain by removing/replacing remaining 22% non nitrogen from air..' and besides that I've been told that they never had to repair any air suspension components damaged because of was air inside the system...


Anyhow, if you or anybody else has all necessary tools and the rest to fill system with nitrogen - definitely JUST DO IT !


P.S. what is not clear to me is how to remove all the 's*it' from system before refilling ? just my 2cnt question, sorry....

 

I do know, that when filling the Nitrogen in the system, the wheels MUST be suspended in the air (i.e- on a hoist, not a ramp style)