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hey how are you
there a Horn relay in the Junction fuse box ,and 15 amp fuse and 2 wires , one to each horn , a high range one and a low range one
Please click on diagram to view circuit diagram
you need to follow the wire for the junction box back to horn and do a continuity test on that wire going to horn not working ,so you know if you have a break in the wire between relay/ junction box .
Please let me know
ASE Certified Technician
Open glove compartment it is behind it
click on link to view
it is the whole box behind it , these relays are internal to JBE, you can replace your self
the back of the fuse box you checked fuses is the JBE box with horn relay internal to it ,
remember we talked about checking the wire to that horn and do continuity test ,before we go to the relay did you
are you looking at fixing this yourself or looking to know the most possible cause of this issue and taking it to repair shop for the work ?
Do you have any prior experience in electrical troubleshooting and testing with a test light for power & ground ?
even if you know how to remove you need a bmw scanner to program it if it turned out to be the case
I will opt out of your question for other expert to help you on it , you should know how to do a continuity test then if you are ASE Master tech
good luck with it ,my time to sing off
a lot of experts here will help you