...that one of your horns has failed. There are two horns, one "low tone" and one "high tone" and they both must be working in order to have a horn with "jump factor."
These horns fail all the time.
You have to remove the bumper cover to get to them, kind of a pain.
I just replaced both of my horns because both had failed.
Buy the OEM replacements from Pelican Parts. They are plug-and-play.
