Tire Pressure Sensor

Remember...looking at a low profile tire will never give you an idea of a tire getting low. My recommendation is that you check your pressure (cold) at least once a month and set it to 32/33 PSI.
Also check it during weather changes...remember for every 10 degree change in temperature, your tire pressure will adjust 2-3 PSI (checked cold -- i.e. sitting for at least 4 hours).
The only other thing would be that you have a defective tire sensor in one of the tires...as usual, another gimmick and another item that can break.

No there is no way to have the computer tell you which tire is low, you're going to have to use the Obama method and check them all with a pressure gauge.