ok- car thows up air suspension fault workshop warning
but suspension all works fine.
just intermitent suspension fault getting worse by the week
had a headertank leak which was fixed a while back also

so when codes where read by dealer, front off side speed sensor had blown due to coolant leaking from old header tank about a month ago

changed speed sensor- and air suspension fault fixed

all other suspension codes where clear
mechanic siad this was the first time he had seen speed sensor blow and effect the air suspension
just a thought for anyone else with this fault
ps- speed sensor did not show a fault on the dashboard

 

Interesting fix. Where's the speed sensor location?

 

behind wheel arch cover - one either side at the front
one in the centre at the back
not sure of rear location
mechanic worked for porsche for 19 years and never seen this fix before
the young apprentice worked it out he he

 

Speed sensor or level sensor ?

 

speed sensor it says on recipt

 

What you described is a height level sensor. You need to find an actual, current Porsche technician. He should have checked those first. The air suspensions are pretty robust, but if I see a problem on one, I check these first. Your guy may have worked on Porsches, but he's no Porsche technician. Sorry, but there it is.

 

Not necessarily true. There are 3 body acceleration sensors which are used to carry out speed-dependent level adjustments. 2003 and early 2004 models had additional accelerometers on each of the front struts for this purpose.

 

This is correct: Here are the trouble shooting items:

http://www.inkilino.es/Porsche_Cayen...IAGNOSTICS.pdf