If the driver's seat belt is not fastened when the ignition key is turned ON, the seat belt warning chime sounds for approximately 6 seconds. And if the vehicle speed exceeds 10km/h with the seat belt unfastened, the seat belt warning chime sounds with the pattern of 6 seconds on and 24 seconds off for 11 times.The seat belt warning chime will stop if the seat belt is fastened or the vehicle speed is reduced to below 5km/h.