See also:

Operation
If the driver and/or front passenger have/ has not yet fastened the seatbelt(s) when the ignition switch is turned to the “ON” position, the seatbelt warning light(s) will flash for 6 seconds, to ...

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 ch ...

Immobilizer system
This light blinks approximately 60 seconds after the ignition switch is turned from “ON” position to the “Acc” or “LOCK” position or immediately after the key is pulled out. Refer to “Immobilizer” ...