My wife and I discovered that our radio display will go out periodically and with that the horn will not sound when pressed. When the display comes on, the horn will work. I have searched and this problem has been reported to the NHSTA, but I cannot find a solution or what causes it. Does anyone know by chance?

 

Don't know for sure what model year yours is but I have a 02 and it does the same thing. Talked to a few mechanics and they claim the radio is at fault, but others claim it is the ignition. I am glad you just posted this, because I have the same question. Maybe someone has the answer

 

I have a 2003 that has the same problem it's the wireing in the steering column

 

My radio flashes at time, meaning light dim or go out but for a mila second. But the horn sometimes goes off by itself and will not turn off until I actually press the horn and hold it. This has not happened but twice, but very annoying. Looked for horn fuse but no luck.