Horn is not working, check engine light is on

check the horn relay in the engine bay relay compartment .It might be sticking on. Maybe swap the relay and see if fault moves to other device.

check all fuses even esp. missing one the DLC sounds like not getting power

Check the fuses. Check the relay for the horn.Check the connections to the horns. There will be 2 horns disconnect both. Use a test light ground it to the battery and stick the probe in the wire connector for any of the horns. Have someone press the horn button. If your getting power the test light should light when the horn button is pressed. If it does? You have wither bad grounded horns or bad horns period.
If the test light doesn't light? You have a problem in the steering column remove the steering wheel and you will see in there a plastic ring with a copper or brass button that drags on another ring to power the horn button. these pieces ware out and the spring loses its tension. This is a common problem with Ford Trucks.
Good luck
Please give me good feed back of somekind for me on here.
Thanks

Hi,
Apparently the previous circuit of horn is shorted making work all time.
Just check entire wires, relay and horn button in your car for shorted and have them fixed.
Otherwise you need to install new set of horn system ( horn button, wires and relay)

remove the horn relay or check your fuse box for horn fuse-remove.

The horn relay is located toward the front of the engine. It is located just behind the radiator overflow reservoir and attached to the inner fender next to two other relays. It is the only one without a plastic cover over the top of it. FYI, our Crown Vic horn didn't blow, and the cruise didn't work. I changed the relay and still no horn. I decided to check the horns themselves. Found wires disconnected from terminals. Touched wire to horn terminal and horn blew incessantly. (previous owner had disconnected horn rather than diagnose why) Pulled the horn "button" from steering wheel and disconnected the wire leads and horn quit. Disassembled the "button" assembly. Foam had degraded over time between the contacts. (Ford has discontinued this part). Cleaned and replaced foam with Scotch foam mounting squares with holes punched out over contacts (2 layers thick). Re-assembled and viola! Horn and cruise control both work! Relay was bad as was horn button.

most new cars have what is called a clock spring be hind the steering wheel.this is a flat ribbon cable like what you would Se in a computer.what can happen when the ribbon is damaged is the horn can quit working.the cruse control .and the air bag light will come also.but most likely one of the problems will occur.but over time the other problems start happening also.so are you sure you are getting power to the relay .use a volt meter on the terminals under the relay and have someone to push the horn button.this will tell you if you are getting power from the horn button.

Check the horn relay is ok,
Check the horn ground is ok.

Place a trouble light across the horn supply- when horn is pressed it should light up steady.
If it lights up, the voltage to the horn is ok -then a replacement horn should fix it.

Just had a similar problem. Brake (stop) lights and horn didn't work. Couldn't find mention of stop lights in fuse chart. Found horn fuse to be slot 21 in the engine fuse block (not the fuse block in car interior). Replaced 15A fuse and all now ok.

check fuse and also check the wire going to the horn and check the inside of the horn too and check the ground

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