CITROEN C1 2015 Handbook page 116

Safety
Seat belt not fastened /
unfastened warning lamps
Front seat belts not fastened / unfastened
1.
warning lamp, in the instrument panel.
2. Left hand rear seat belt unfastened warning
lamp, in the seat belts and passenger's
front airbag display screen.
3. Right hand rear seat belt unfastened
warning lamp, in the seat belts and
passenger's front airbag display screen.
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If you place a load on the front
passenger seat, this may cause the
warning lamp to come on.
Front seat belt(s) warning lamp
The warning lamp 1 comes on in the instrument
panel if the front seat belt is not fastened or is
unfastened.
From about 12 mph (20 km/h) and for about
30 seconds, illumination of the warning lamp is
accompanied by an audible signal.
Beyond this time, if the seat belt is still not
fastened, the tone of the audible signal
changes and remains active for about a further
90 seconds.
Rear seat belt warning lamp(s)
The warning lamp(s) 2 and/or 3 come on in the
seat belts and passenger's front airbag warning
lamp display screen when one or more rear
passengers unfasten their seat belt.
From about 12 mph (20 km/h) and for about
30 seconds, illumination of the warning lamp is
accompanied by an audible signal.
Beyond this time, if the seat belt is still not
fastened, the tone of the audible signal
changes and remains active for about a further
90 seconds.