I've owned my 2021 K5 EX for a year, and only now am I discovering that I cannot lock the car without the key fob. This is the first vehicle (of many) that I've owned where I couldn't do this. To restate: I cannot just open the door, hit the lock button on the door, and close the door. For my K5, that will NOT lock the car. This makes no sense at all. I should be able to lock my car whenever I want. Help!