The Hyundai Grand i10 Nios is a twin model to the Exter small SUV. From the Exter's owner's manual:
"As a reminder to the rear passenger, the rear passenger's seat belt warning lights will illuminate for approximately 6 seconds each time you turn the ignition switch ON regardless of belt fastening.
Whether or not a passenger is seated:
If the seat belt is not fastened when the ignition switch is turned ON, the seat belt warning light will illuminate for approximately 70 seconds If you start to drive without the seat belt fastened the corresponding warning light will continue to illuminate for approximately 70 seconds regardless of vehicle speed.
If you unfasten the seat belt when vehicle speed is below 20 km/h (12mph), the corresponding warning light will illuminate for approximately 70 seconds.
If you unfasten the seat belt when vehicle speed is above 20 km/h (12 mph), the seat belt warning chime will sound for approximately 35 seconds and the corresponding warning light will blink.
If the rear door is opened while driving below 20 km/h (12 mph), the warning light and warning sound will not operate even if vehicle speed is above 20 km/h (12 mph)."
