I wonder if anyone would be kind enough to advise me on how difficult/easy it is to change the alarm module on an Audi A4 Cabriolet (2003)? Mine is playing up, chirping at me, making funny noises etc. and I suspect that because of the age of the car the internal batteries have had it.

I have seen other posts that refer to the alarm modules location on normal A4 cars but is the same for a cabriolet and how does one gain access to it?

Any help/advice would be most appreciated.