Car Key Repair - What to Do When Your Key Breaks in HalfCar keys break in a variety of ways. The plastic housing loop could be ripped off, leaving you with a key which won't turn. Other times, the key splits in half.A locksmith is able to make an alternative key. However, you'll need to get the key programmed for your specific vehicle.How can I get a brand new keyYou will need a replacement if your Car Key...