Benefits of Programmable Car Keys Preprogramming your car keys is a fantastic solution to avoid being locked out in the future. It can be expensive depending on your car. Sanabria says there are tools to help shops, and even DIY customers, program replacement keys and retrieve information from immobilizers. 1. https://auto-locksmith31467.blogdeazar.com/29372104/beware-of-these-trends-concerning-car-key-programer