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The Benefits of Having a Spare Key For Cars If you purchase a brand new car, the dealer will usually give you two keys. One key will be your primary key, and the other is your spare. You can put your spare key in dryer vents or power meter boxes. Make sure that they are not easily accessible or cannot be tampered. Peace of Mind The primary benefit of having a spare key is that it offers peace of mind. It removes the anxiety of being locked out of your vehicle. It also allows you