Steering wheel buttons not working

When the buttons and the horn are not working this is most always a clock spring failure.

Here is a guide that talks about this:

https://www.2carpros.com/articles/symptoms-of-a-bad-airbag-clock-spring

I am attaching the process from the manual on how to replace this.

However, the best thing to do is check power coming from the connectors to find out if we can get voltage coming through it when you press the horn.

https://www.2carpros.com/articles/how-to-check-wiring

I attached the connector views as well.

Please let me know if you have questions with this.