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, ...

Winter driving
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If the light illuminates steadily
If the light illuminates steadily while driving or does not turn off after the engine starts, an emission control system malfunction has been detected. You should have your vehicle checked by an auth ...