What Are Car Key Programmers? Car key programmers are devices that can clone a transponder in the memory of a vehicle. They are useful for replacing stolen or lost keys. These can be used to reset the oil service light as well as tire pressure warning lights and other functions. https://g2874607.suomiblog.com/the-reason-why-car-keys-programmed-is-much-more-hazardous-than-you-think-45065890