2010 Merc Mylan Hybred. Horn not working. Was told not the fuse. What are other possibilities and costs?

MK49 jeep 2010. usa answers me...
well buy the service manual or rent it

https://eautorepair.net/Marketing/Default.asp

there is no secrets here on this topic at all
just the lack of no book in hands or PDF
is this car USA spec car? not told country of VIN
so all I can do is tell you how OURS works,
for sure this simple thing (well is not simple like in 1990 and before) (alarms added and more)

not scanning the PCM first is failure #1
the MK49
the TIPM Tipm the SM shows a relay deep inside TIPM for horn ,but is vague o n location.
under hood, totally integrated power module.
has 3 honk paths or more.

here is the path horn fully.(path1 horn button)

horn button pressed or switch here bad.
goes to clock spring (not bad)
then to cluster brain,(honk commands)
to TIPM brain, via fuse F28 there.
and TIPM DRIVES THE HORN directly.

or an alarm trips the horn. visa CAN_bus network commands, and again not scanning , the obd2 port you will never learn why it fails.
chirp mode (keyfob decoder), alarm or the horn button fails. 1,2,3,
3 ways to fail, and more.

not scanning the OBD2 PCM port is why you do not
now what is wrong.
B2336???? 2339 horn switch stuck DTC> amazing no?
com fails if any kind (DTC)
the horn also has chirp logic (disable it is wise)

"Using a transmitter programmed to the Sentry Key Remote Entry Module, the status of the horn chirp may be toggled by the customer."


or the alarms on the car is failing and sending horn honk commands via Can-bus network; Unnnn codes?
CAN_BUS B and C must be error free (or LIN bus)

no alarms , no chirp mode junk enabled.
here is no internal schematics of the TIPM at all
so how it directly drives the horn is not shown.

scan it first. not last. or go broke fast. guessing wrong.

The horn is fused and will be listed in the fuse box layout within your user manual.

Use a voltmeter at the horn connector and have someone press the horn button. If you see voltage at the connector, then the horn is bad. If you don't see voltage, then either the relay is bad, the clockspring, or the horn button is bad

Check for a bad connection at the horn button.

This vehicle should have 2 horns. One on each side. It would be unusual for both horns to be defective. Possible horn relay/horn pad or fuse problem. You can test the wiring with a test light for power and ground to determine if it is a horn or power/ground issue. Here is a generic picture of the horn locations.

It depends on how many amps the 2010 trail blazer horn uses & the size of the fuse for the horn in your saturn. The horn for the trail blazer should be labled on it somewhere as to how many amps it uses & you can find the horn fuse rating in your Saturn by looking in the owners manual. If U can't find or dont have the Saturn owners manual find the fuse block and the horn fuse location should be labled look for the fuse rating on this fuse, pull the fuse itself if U have to but remember to put it back. If you know the rating 4 the trail blazer horn and the Saturn horn before you try to switch them it will save U time and you wont fry the horn wires possibly in the Saturn. Good luck!!

I need help on my 2010 jeep compass 2.4l the horn does not work I put a new horn in it worked for a couple of days and stopped working. Any one know if there's a fuse for the horn I can not find one ?

very possible the Key fob used has a short and when you hit the lock button? It transponded panic mode

The fuse for the horn would be in the power distribution box located under the hood in the engine compartment (see picture below). Also below is a diagram of the fuse layout. The fuse you want to check will be the fuse in the number 10 position and should be a 15 amp fuse. There is a horn relay as well and the is the relay in that same box in the number 7 position. I hope this helps and good luck.

Why would a horn require a sensor?
I don't buy it.
Tell us more on the make, model, and year.
If someone told me the horn was $300, I would wire a new horn and button on the dash for $15.