I don't know why people want the horn to sound when they lock their cars. To each there own, I guess. I find it to be a pretty annoying feature...being in a parking lot listening to a bunch of horns going off...like there's not enough noise in our world today. My Pacifica has the option via the menu to change to the horn going off or not and I've chosen NO HORN. Now if I could just get my Sebring to stop honking everytime I lock the doors. I'm glad my XF does not sound the horn. Does it really matter? Push the lock button and it's locked. Do we really need confirmation? I certainly don't mind looking back to see if the lights flash; I like the view. (Sorry if I sound testy - I'm still recovering from the site being down for a few days).