Air Suspension faulty

[thor1974]

i have a 2006 Porsche Cayenne 4.5 V8 Bi-Turbo.

 

after i parked the car overnight the front suspension goes down and the rear stay up. the display show nothing about a failure. if i start the engine the front goes up and after a short while i hear that by the passenger side airfilterbox the air get short release again. the whole suspension is working perfect only that the fron goes down over night. i sprayed all lines and airbags in with dish liquid to see whether there is a leak but i didn't find anything. can it be that the regulation valve is not proper working or the little valves on the strut?

 

please help!!!

[lewisweller]

6 hours ago, thor1974 said:

i have a 2006 Porsche Cayenne 4.5 V8 Bi-Turbo.

 

after i parked the car overnight the front suspension goes down and the rear stay up. the display show nothing about a failure. if i start the engine the front goes up and after a short while i hear that by the passenger side airfilterbox the air get short release again. the whole suspension is working perfect only that the fron goes down over night. i sprayed all lines and airbags in with dish liquid to see whether there is a leak but i didn't find anything. can it be that the regulation valve is not proper working or the little valves on the strut?

 

please help!!!

Had exactly the same thing. I could not find any leaks either. My guess is the actual leak is either inside the valve controller solenoid unit itself or the strut oring seals top or bottom is leaking. 

Mine was the passenger side front which went down completely overnight. The drivers side front also went down but only a little bit. 

The cost to replace orings is cheap but labour time is maybe 4 hrs. It maybe the solenoid controller internally cost of that I don't know. 

[thor1974]

do you know how to chnage the o rings by the struts?

[thor1974]

are that the O Rings?

 

http://www.ebay.com/itm/PORSCHE-OEM-11-17-Cayenne-Front-Suspension-Air-Spring-O-ring-N90367701/252730153941

[lewisweller]

12 hours ago, thor1974 said:

are that the O Rings?

 

http://www.ebay.com/itm/PORSCHE-OEM-11-17-Cayenne-Front-Suspension-Air-Spring-O-ring-N90367701/252730153941

I think I am mistaken, the air spring part (not the whole strut assembly) is sold as a unit, I've looked to see if any rebuild or repair kit for it is available but I don't find anything. 

The oring you see in the diagram isn't holding any air seal I don't think. Also this is for the newer cayenne and slightly different assembly.