islandhop

Good Morning all,
I have a 2005 GX470 and the horn does not work. I have replaced the fuse to no avail. I hear a clicking noise coming from under the dash somewhere when I press on the horn. Can someone tell me where to find the horn relay so I can see if that is the culprit? Thank you.

BurgBoxstr

Clicking noise you hear is the relay (fuses don't make a sound... errr unless 'popping') so all seems good there.

Trumpets themselves are likely dead - not necessarily uncommon - or leads are not connected. Use a multi-meter to check leads in front for 12V continuity when horn pad at steering wheel is depressed. If good, and assuming leads were connected, then replace both high and low trumpets and you'll be good to go. Likely one has been dead for a while but other finally gave up the ghost.

Any 12V replacement horn will suffice so long as it fits, generous area as I recall, and you're not afraid to change connector if need be; so no need to pay for overpriced units from Lex.

Also, have never used myself but hear [unintentional pun] good things about the replacement Hellas available at Griots: http://www.griotsgarage.com/product/hella+horns.do

Good luck