just to add some information...

A week ago, I discovered an electrical problem with one of the 2 horns. When I used it, I blew the fuse (that control the horn, the exterior temp. gauge ant the turning signals). I replace the fuse and did not use the horn. I didn't have the time to fix the horn yet.

Can it be related to my actual problem or it is 2 seperate problems?

I fail to see a relation but since it is electrical...