olex400

Thanks for all the comments and help. There are no other malfunctions, no warning lights, cruise and the phone controls work fine. It's just the horn not blowing. My guess is that there is a brake in the cable from the clock spring to the fuse box (relay). Tomorrow afternoon I will take it all apart following Steve's instructions. On the left side of the steering wheel is the phone controls panel I think it can be taken off to find the exact screw as described. I will post the results here.

Thanks for the information. How do I take the horn pad off, is it held by clips?

My LS 400 97' has the same problem. I took out the relay and short-cutted the two pins and the horn blew. I also opened the relay, put it on and forced the contacts: same result, so I assume both the horn and the relay work properly. Which brings me to the question if there is any way to reach the horn pad contacts under the cover. The springs work well and you can hear it hitting the contacts when pushed.