If your vehicle is equipped with an anti-theft system, it is important to know how long the system will take to reset. Depending on the make and model of your vehicle, the reset time can vary. Most systems will require you to wait for a certain period of time, usually between 24 and 48 hours, before the system will reset itself. However, some newer models may have a feature that allows you to reset the system yourself. If your vehicle does not have this feature, you will need to contact a qualified automotive locksmith or dealer to have the system reset for you.