Horn is not working
First check the fuse. Then locate the horn under the hood. Pull off the connector. Check for corrosion. May have to sand the pins on the horn to get good connectivity. If that doesn't work, try running two jumpers from the battery to the horn. If it doesn't honk, time for a new horn unit.
I have 2015 jeep Cherokee Limited horn didn't work sometimes and would blow on it own took to jeep dealership they kept it for about days up dated 6 flashes to on board computer now everything works good under warranty covered including rental truck.
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