Originally Posted by Kabigon
Did you drive the car after adding air?
The pressure sensors "go to sleep" when the car isn't moving (when the tires are not rotating) to prolong their battery life.
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.