Benefits of Programmable Car Keys Preprogramming your car keys is a great option to avoid being locked out in the future. It can be expensive depending on your car. Luckily, there are tools to assist shops and DIY customers to program replacement keys and restore the immobilizer's data, Sanabria says. https://car-locksmith89309.snack-blog.com/29352691/what-is-car-key-programing-and-how-to-use-it