Just got the car back. Seat bottom cushion had to be special ordered. All seems well so far. If I apply light pressure for a few seconds to the passenger seat bottom, the airbag light illuminates (indicating passenger air bag is off). If I remove the light pressure, 2-3 seconds later the airbag light goes off (indicating that the passenger air bag is on). If it starts acting up, I will report back.
FYI - the passenger seat bottom cushion has a list price of $2,983.12
the airbag sensor cannot be purchased separately, so the whole seat bottom cushion assembly must be purchased.