See also:

Fuel
Use of a fuel which is low in quality or use of an inappropriate fuel additive may cause engine damage. ...

Non-turbo models
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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 ...