At 16,000 miles the horns on my vehicle failed. This occured on busy tollway just as a driver began to enter my lane from the right side. When I tried to engage my horn to warn him I was unable and had to slam on my brakes to avoid a collision. The driver behind me came within inches of rear ending me and he swerved into another lane almost causing another collision. Then the original driver thought I was brake checking him and went around me an slammed on his brakes in retribution. Horns that were used to repair by dealer were new M’s. At 24,000 miles a similar experience occured where I had to slam on my brakes because I was unable to warn another driver that we were about to collide, but the horns failed. Once again the dealer had to replace the defective horns with more of the same M horns that have been proven by myself and others to be unreliable. In researching complaints about this issue I have seen numerous other owners of 23 and 24 Elantras (and Konas) making same complaint, some of which had to have their horns replaced multiple times. I complained to Hyundai Corporate and requested an alternate replacement horn as now I have to drive a 1 year old car that I don’t know if the horns are going to work or not, and despite all the evidence I presented to them, they refused. I cannot allow any other family members to drive my $21,000 car for fear that they might not be as ‘lucky’ as I was in avoiding an accident. I am told that the NHTSA ds not consider a horn as a safety item and therefore not within their jurisdiction. I find that difficult to understand due to the lack of horns definitely put me in a position twice that directly related to my and the other driver’s safety. What other reason could there be for a horn other than waking up drivers at a redlight who are looking at their phones instead of paying attention? I’m sure that when Henry Ford put horns on his cars that it was not for any other reason than safety.