my horn will not blow on 2004 BMW 745Li

ive tried everything

Asked by for the 2004 BMW 745Li
when you say you have tried everything what does that mean ?. do you you have an aigbag lamp on ? do all the controls on the steering wheel work ? These are all connected through a clock spring wich would cause one or all the symtoms including inop horn.
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clock spring? what is that? i have the same issue