Replace My Car Key Kent. offers a convenient mobile car key programming service. Choose between having one of our locksmiths visit you at home or work place. Most car keys today contain a transponder chip that requires programming to your car’s immobiliser. We have the necessary equipment to program almost any car key, with only a small percentage needing dealer coding. Let us know your car’s make and model, and we’ll confirm if we can assist. We prefer to provide new keys with programming to ensure the correct transponder chip and key compatibility.