Nothing is wrong with your car - that is just how it works. I have non-tech, was told the same thing by the Tesla sales people, but that is not the case of the car without tech package. You have to use the fob buttons to unlock the car. For the first 10,000 cars or so, they built passive entry into the car regardless, it just wouldn't auto present.
I was working with the Service Center to get this enabled and they thought they could activate it for $250 by installing an additional antennae and do a firmware update. However, the non-tech doesn't have the proper wiring harness and it because thousands (enough to not even quote me) to re-wire for it. I am 42XXX VIN, if you find a way to get it enabled easily I would definitely be interested to know how!