Not too familiar with Avys but...
At the driver's side, if you have a coinbox, open it up and you should be able to open it even further. Behind it is the fuse box.
It's possible the fuse box is just behind some cover-- check your manual to be sure.
In either case, you'll find the fuses behind it and on the back of the cover or the coinbox, you'll find a diagram of what fuses do what. Find the appropriate fuse, take it out and see if it's broken. If it it is, there should be a spare, on the cover-- use a same amperage and put it in.
(on the same cover, you might find a little pincher tool to help you take out the fuse, other wise I like using needle nose pliers to gently pry fuses out).
Edit: I hope I am not a offending you by assuming your level of knowledge for car electrics.