How do you turn off the horn from your Toyota matrix?

To turn off the horn on a Toyota Matrix, you can disconnect the horn fuse or the horn relay from the fuse box. The fuse box is typically located under the dashboard or in the engine compartment; check your owner's manual for the exact location and fuse details. Alternatively, you can also disconnect the horn itself by removing its electrical connector. However, be sure to address any underlying issues if the horn is malfunctioning.