See also:

Hill start assist warning light (MT models – if equipped)/Hill start assist OFF indicator light (STI)
...

If the passenger’s frontal airbag OFF indicator illuminates and the ON indicator turns off even when the front passenger’s seat is occupied by an adult
This can be caused by the adult incorrectly sitting in the front passenger’s seat. Turn the ignition switch to the “LOCK” position. Ask the front passenger to set the seatback to the upright po ...

Passenger’s frontal airbag ON and OFF indicators
Refer to “Front passenger’s frontal airbag ON and OFF indicators”. ...