Car Key Reprogramming Car key reprogramming involves programming the chip that is blank in the car key replacement to make it compatible with your car. It's more efficient than ordering a new key from the dealer and could save you money. This procedure is typically performed by an experienced locksmith. https://autolocksmiths74202.pointblog.net/three-common-reasons-your-car-key-programmer-isn-t-working-and-how-to-fix-it-70832806