It will probably be the TIPM which goes out all the time in these cars, it is easy to replace because it-self learns. here are the wiring diagrams for the horn so you can see how the system works and the horn location as well. I also have included how to replace the TIPM. To confirm the failure, we should do a CAN scan, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.
here is a video to show you how:
https://youtu.be/u-4syLc-ifQ
Check out the images (below). Please let us know what happens.
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Sunday, June 25th, 2023 AT 3:20 PM