Once you find it, be advised you may have dashes next to your tires instead of numbers. Mine showed dashes for almost 2 days (over 100 miles of driving) before finally showing pressures.
Also, if you call Tesla about it, be warned some techs are clueless about it. One Tesla representative in CA told me that only cars with air suspension got it. (My car has coils and is showing tire pressures) So some of them are really mis-informed.