Mine was cracked at the dealer during service one time. I had just gotten that crack fixed earlier that same year. I showed it to them and they took care of it. I usually leave the jack pucks in the floor next to the lug key. My service person is pretty aware of the issue but not sure all of the techs there are. I'm certain that they pay closer attention now when I take it in. I get down and check before dropping off, and upon pickup also.