What Are Car Key Programmers? Car key programmers are devices that can replicate a transponder into the memory of a car. These are useful for replacing keys that have been stolen or lost. These can be used to reset the oil service light, tire pressure warning lights and other functions. https://carlocksmith65938.boyblogguide.com/28724715/your-family-will-thank-you-for-getting-this-car-key-reprogramming