From the Eeco (July 2024—) owner's manual:
"Rear passenger’s seat belt reminder (if equipped)
Reminder light in speedometer for rear passengers to fasten their seat belts. Whether or not a passenger is seated, the rear seat belt reminder system works as follows, when ignition mode is turned ON:
1) Reminder light will turn ON for the non buckled seats and continue for vehicle speed below 15km/h.
2) When vehicle speed is above 15km/h, reminder light will remain ON for the non-buckled seats for about 65 sec- onds and then turn OFF.
3) Further, when a buckled seat belt is unbuckled, the corresponding reminder light will turn ON. Above 15km/h, the reminder light will blink (about 65 sec- onds) along with a buzzer sound (about 35 seconds). The reminder light will remain ON until the seat belt is buckled.
The reminder will be automatically can- celed when all the rear seat belts are buck- led or the ignition switch is turned to “LOCK” position."