Originally Posted by BetaDnB
I know you know a lot about this car, however anytime I've put air in my tires with the light on (including this morning) I do so with the car running. When I reenter my car the light is already off.
Some TMPS sensors will go out of low power mode when they detect a relatively large change in air pressure.
In the case of the OP, it seemed that the TPMS system was working correctly since the tire pressures were really low.
I was curious to know if he had driven his car after adding air to the tires.