Mazda 2008 RX-8 Owner's Manual page 31

The belt minder is a supplemental
warning to the seat belt warning function.
If the driver's seat belt is not fastened
when the ignition switch is turned to the
ON position, the warning light/beep
operates to give you further reminders
according to the chart below.
Between 0
Condition
km/h
(0
Seat belt
Indicator
Beep
: Fastened
: Unfastened
: Illuminated
: Flashing
: Beep
Once the beep sound is heard, it continues
sounding even if the vehicle speed lowers
to 20 km/h (12 mph) or less until the
seatbelt is fastened or the beep sound
period has passed.
Vehicle speed
20 20 km/h
(12 mph) or
12 mph) more
Essential Safety Equipment
Seat Belt Systems
2-19