destence

Within a minute of pulling in the garage I can hear an air release coming from the front passenger side tire area. This does not seem to happen all the time but ocasionally. Once in a long while maybe once a month I get an " air chassis faulty" warning on the dash display that goes away after restart. Any ideas? Is this normal? Thanks!

BlackTurboS

Seems completely normal to me. I've had my 09 CTTS for 3 years and it frequently releases pressure from the air suspension to level out after I park and hop out. I would say more than 50% of the time I hop out of the car and I hear it kick out some air to auto-level. No big deal. The chassis system fault may be an early sign of needing a new battery and nothing more... that is typically the first symptom. Best of luck, sounds to me like you are fine its the air suspension leveling itself out.

garrett376

The hissing sound, plus chassis fault is not normal. Put it in special terrain height and see if it hisses air (different sound vs the struts filling or airing down). If so, your strut may be leaking somewhere and your pump can't get to the right height by a certain time and throws the error. If it were my Cayenne, I'd figure out what the specific warning was about by reading out the fault and getting it corrected.

s-works

Hello destence, I was going to make a post about this, but I had the exact same problem. Eventually the right front would not release the air and would stick in the up position intermittently.
The odd thing is I was not changing any suspension settings and did not go past 80 (goes into sport and lowers suspension) to troubleshoot. It ended up being the air check valve on front and back
of the passengers side. Was about $500 at the dealership for both. I was told the rear is the most common and did not have the front in stock, so had to overnight it. Driven it now for 2 months with no
issues.. Hope this helps...

destence

Thanks very much for the responses. I will continue to monitor and follow up. What a great place!

bigbevo

Nice rig, and those wheels are very slick. Are they OEM? I have an 09 GTS and I'll sometimes hear air releasing from the front passenger side after I park. Like others said, maybe half the time.

destence

They are from a 2004 turbo I believe. here is a thread about them:

https://rennlist.com/forums/cayenne-...tire-size.html

v10rick

Normal with my GTS.
I assumed its coming from the compressor under the passenger floor area.
Also hear the same sound when slowly entering a county rd. from our driveway.

Its heard each time, after parking in my home garage.

No codes associated with this for 2.5 years.