Q: Horn/Chime will not sound when I activate alarm.

Hi there. Replacement of the struts should have no affect on the horn as there would have been no reason to remove any part of that system. First, does the horn work if you press the horn button? If so, then the "body control module" could be at fault. If the horn does not work, there could be a couple of things going on. Check the fuses and relay and replace as necessary to recheck operation. If the horn is still inoperative, check for voltage at the horn while the button is pressed. If there is no voltage there, this could be a broken wire in the spiral cable/clock spring. The airbag would need to be removed to replace this wire and should be done by a qualified technician for safety. If you would like to have this checked, your best bet may be to take this to the dealer to have this resolved.