From the Curvv's owners' manual:
"Seat Belt Warning Lamp
Your vehicle is equipped with Seat Belt Reminder (SBR) for all occupants.
Whenever an occupant is not sitting in
any seating position then seat belt re-
minder beeping sound will not be
played in instrument cluster.
If any material is kept on any seat then
SBR beeping sound may be played in
instrument cluster. Please do not keep
any material on seat.
• If the driver or any passenger do not
fasten the seat belt, seat belt reminder
lamp will blink and a buzzer will sound
for pre-defined duration until the seat
• If any passenger seat is occupied by
child (without child seat), system may
detect occupancy and warn with seat
belt warning. It is not taken to mean
child can occupy any passenger seat
and use seat belt. Please refer CRS
section for recommended seating po-
sition if child is sitting with child seat."