Where is roof control unit fitted

[kpn]

I have been told by Audi that I require a new roof control unit at a cost of £490. I can purchase one at £135, but can not see where it is fitted. Any ideas please.(A4 cabriolet 2003).

[Crasher]

It is behind the right hand side rear side trim but it is very unusual for these to fail. What are the symptoms and fault codes? I have worked on a number of 8H cabrio’s with roof problems and I have yet to change a control unit.

[kpn]

Thanks for reply, The roof opening light on the dash flashes when I lift the control switch to operate the roof. Thats all that happens, then the light goes out after a few seconds. I do not have a fault reader so can`t give you a code although I don`t know if relevant the battery appears to have given up at the same time. Hopefully you can help. Just remembered you can hear a relay click when you lift switch.

[Crasher]

Why do you think you need a new roof control unit then?

[kpn]

When the roof stopped working my local garage could not help and I took it to Stirling Audi. They came back to me saying that it required a roof control unit plus the usual you could do with pads/disks etc. I notice you say it is unusual for this to go, any other ideas ?

[Crasher]

It is a very complex roof, I would only be able to help properly by working on it. Some common issues I have had are pump failure (this shows itself by the roof popping up at the front but going no further) and various micro switch problems. When I get one of these that won’t work, I start by folding it down and back manually and working trough all the codes until they are gone.

[kpn]

Thanks for your advice Crasher,looks like I don`t have a lot of choice now but to take it back to Stirling Audi and hope that they are correct with their diagnosis. Nottingham is a bit to far to travel. Although I have been told of a Audi Independant which is only a few miles away. Perhaps I should ask for there thoughts on the problem.

[kpn]

Just to give an update on the roof problem. My neighbours Audi cab`s soft top would not close today. They asked me how to close it, knowing about my problems. Anyway I manualy closed their roof using the key. I thought I would try mine once more, manualy I opened and closed it and lo and behold it is now working. I had tried this weeks ago when the problem occured. Typical nearly into winter and I can open my soft top.