Question about BMW 3 Series
Sounds like a rely or fuse, check you manual for the fuse box location and then check the fuse for the horn. If the fuse is good, check for votage with a voltage meter at the horn when you have someone else honking it and see if you are getting 12 volt to the horn itself. If you are getting voltage then the horn itself is bad. Sometime just tapping the horn can make it start working again.
Posted on Nov 14, 2010
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Posted on Jan 02, 2017
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