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The Benefits of Having a Spare Key For Cars The dealership usually gives you two keys when you buy the brand new car. One will become your primary key, while the other is your spare key. You can put your spare key in dryer vents or power meters. Be sure they're not easily accessible or can't be altered. Peace of Mind The most obvious benefit of having an extra key is that it gives peace of mind. This is due to the possibility of being locked out of your vehicle. You can also quickly and easily get into your vehicle if you acci