See also:

If the front passenger’s frontal airbag ON indicator illuminates and the OFF indicator turns off even when an infant or a small child is in a child restraint system (including booster seat)
Turn the ignition switch to the “LOCK” position if the front passenger’s frontal airbag ON indicator illuminates and the OFF indicator turns off even when an infant or a small child is in a child rest ...

Effect vehicle modifications made for persons with disabilities may have on SUBARU advanced frontal airbag system operation (U.S. only)
Changing or moving any parts of the front seats, rear seat, seatbelts, front bumper, front side frame, radiator panel, instrument panel, combination meter, steering wheel, steering column, tir ...

Installing a booster seat
• Child restraint systems and seatbelts can become hot in a vehicle that has been closed up in sunny weather; they could burn a small child. Check the child restraint system before you place a chi ...