My horn doesnt work at all anymore. After i got a subwoofer installed i went to use it a few weeks later and makes no sound. If i hit the panic button the horn still goes off. Does anyone know how to fix this?
Car is a 2003 TL
Thanks.

 

It might be an issue with the horn pad under the airbag. If it works with the panic button on the key than it sounds like a physical problem and not an electrical one.