CITROËN C4 CACTUS Owner's Handbook Manual page 138

Safety
Seat belt not fastened /
unfastened warning lamps
1. Front seat belts not fastened / unfastened
warning lamp in the instrument panel.
2. Front left seat belt warning lamp.
3. Front right seat belt warning lamp.
4. Rear right seat belt warning lamp.
5. Rear centre seat belt warning lamp.
6. Rear left seat belt warning lamp.
138
From approximately 12 mph
(20 km/h), the warning lamp(s)
flash for two minutes accompanied
by an audible signal. Once these
two minutes have elapsed, the
warning lamp(s) remain on until the
driver or front passenger fastens their
seat belt.
Front seat belt warning lamps
On switching on the ignition, warning
lamp 1 comes on in the instrument
panel and the corresponding warning
lamp (2 and 3) comes on in red in the
passenger's seat belt and front airbag
warning lamp display if the driver's
seat belt or front passenger's seat belt
is not fastened or is unfastened.
Rear seat belt warning lamps
The corresponding warning lamp
(4 to 6) comes on in red in the
seat belt and front airbag warning
lamp display if one or more rear
passengers unfasten their seat belt.