My light in the car always indicates Passenger Airbag Off, whether there is someone sitting in
the seat or not. Is this how it should be, or is there a malfunction?
If it says 'Airbag Off' when someone is sitting in the seat, it is a malfunction and could indicate that it is non-operable. Get it into a dealer immediately, as the passenger may not be protected.
You have a malfunction. Usually this type of problem is the seat switch that tells the Air Bag module when someone is sitting in the seat or not. But don't mess with this yourself cause if you don't know exactly what your doing you could wind up blowing the air bag themselves and that get expensive very quickly.
take off pos post on your bat leave it off 20 min put it back on that should fix it
Check the wire connector under the passenger seat, sometimes they come apart or loose. It's connected to a sensor that tells the computer when a person is sitting there, if it doesn't detect weight on the seat, the airbag will not activate in case of a collision.