Unlock Key M,ount And Blade Why Does My New Ignition Cylinder Key Unlock My Doors?

Why does my new ignition cylinder key unlock my doors? - unlock key m,ount and blade

He ignition cylinder replaced at a cost of over $ 400 Dodge Dakota. I found the key to my house. Under the new key is the old key. It was a game. If I had my truck, I could feel WD-40 when I was in my car. I just got a new key in the elderly. I think I've been cheated.