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2021 Mazda 3 Owners Manual - Seat Belt Warning Systems



Seat Belt Warning Systems

If it detects that the occupant seat belt is unfastened, the warning light or beep alerts the occupant. Seat belt indicator light (rear seat) (green) (Some Models)
 
 
The light turns on when the ignition is switched ON and a rear seat belt is fastened, and then it turns off after about 30 seconds.

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