Cheers Grant
We've been home from holidays nearly a week and I managed to strip the carpet back following this guide:
http://forums.audiworld.com/showthread.php?t=1675861
This is pretty much what I found:
The box containing the module had enough water swimming around under it to be causing problems - certainly poured a fair bit out!
I could only get 2 out of 3 bolts out for the evaporator funnel - don't know if the 3rd is even less accessible on a RHD car than LHD but even with a 1/4" drive socket set with uj or flexi coupling I couldn't move it more than a tiny bit. With 2 out I managed to get it out of the hole to blast both ways with compressed air (not a proper go 'upstream'). I also rodded the upstream end with a brush I've got for cleaning out my mountain biking water bottle pack! The valve end didn't seem to be blocked anyway.
I now have condensate dripping out of the car by the lifting point near the subframe - I'm not convinced it was coming out of there before I did it. What I can't see is where the water was getting into the footwell as there's no evidence of it tracking down from the funnel/valve area? I'm wondering if it's double skinned by the valve and was tracking back or if it backs up high enough to end up coming out of the rear passenger floor vents?
At the moment the front seat is still in the car but the carpet's been propped on the seat all week and lifted up as much as I could achieve. I've been leaving the car parked with windows open during the day to try and bake the water out, which seems to be working.
I've had no repeat of the indicator lights shorting out. The remote central locking was doing odd things - it would lock the car and if you unlocked it immediately it would work. Leave it half an hour and it would've 'forgotten' the remote until you switched the ignition on again. Last couple of days that odd behaviour has also stopped.
I've bought some WD40 contact cleaner which is also supposed to clear water residue and my plan over the weekend is to fully remove the module from the car to do that, plus clean up all the sockets as I can see some signs of water entry around the multiplug terminals.
I bought some silicone grease but I don't think that's the same as contact grease so probably not advisable to use on the individual pins?
Any other advise on things I should check or do before starting to put it back together? Once I've got it sorted I'll need to find someone to clear the airbag fault codes. I thought by turning the passenger bag off in the glovebox and running it like that it wouldn't throw a fault with the glovebox removed? It has anyway.....
Cheers
Adrian