Im not completely sure, but when i was looking for x5's i wanted the comfort access keyless entry.

when i was talking the the salesperson, he told me he didnt have one available, and i pointed out that one of their cars has the "comfort access" option. the salesperson told me that "comfort access" simply means that you have a remote to unlock your car, which all bmws have. so i guess "comfort access" is not the same as "comfort access keyless entry".