'morning all - just had a go at investigating this further - with little luck. Unable to get my trolley jack under the car when it's in the garage (not enough room under the car) so had to place one corner on the kerb to be able to jack it up and remove the wheel - which then forces the system to disable itself (all options greyed out), making troubleshooting somewhat impossible!

I've managed to narrow it down to the front right corner (LHD car) but can't figure out a way to get access with the system activated to look further. Compressor is definitely still going and the only faults recurring are the leak in system and lower limit exceeded.

Any suggestions before I am forced to take her to the stealers?

Cheers.

After some judicious use of jacking mode, kerb corners, various pieces of wood and some ingenuity, I finally managed to get the car raised with the system active to have a look.

The only place I can see bubbles coming from is the red circle - which I believe is the inlet valve? Anyone know how easy it would be to replace just the valve (assuming the part can be found)?

http://i1207.photobucket.com/albums/...rta74/leak.jpg

Have managed to find replacement valves here -

http://www.ebay.com/itm/New-Valve-Se...item2c624b4e61

The question remains though about whether it is really a DIY job.

Maybe you can remove and refit yours with a new o-ring?
Looks just like it could be an o-ring or seal problem.
Maybe remove, clean and replace with Loctite pipe-seal would work?

Possibly - but does anyone know just how much dismantling is required - from the little I can see, it is either riveted / bolted on from inside. Does anyone know a) whether it can easily be removed / replaced and/or b) what type of fastener is used?

Problem is, it's the only car that I have available at the moment so if it has to go to the dealers, I'd need to drive it there and get the work done before driving home again. OR buy the replacement and do it myself, if reasonable.

Just had a look on ElsaWin, looks like it comes as a single piece from Audi. There's a few warnings about not releasing the residual pressure valve too (the bit just after the pipe goes in).

Not so good news :(

Thanks agin PsYcHe.

Damn - of course, if I could actually get the Bentley manual, which I've paid for, to work on an operating system from this century, I would maybe find info like that. Let this be a warning to anyone interested in the Bentley manual - unless you still use windows xp, forget it! (I am pretty pc literate, having built my own for the last 15 yrs but now consider it to be a complete waste of dosh). Rant over.

Then what you want is a copy of VMWare Workstation (or Player) and a Virtual Machine with XP on it (Or XP Mode in your Windows 7 install).

However.. I digress..

Or for free, Oracles' VitualBox.
https://www.virtualbox.org/wiki/Downloads
I use it on a Mac for XP stuff such as ELSA and Ekta

I still use Windows XP on all my machines :)