CITROËN C4 CACTUS Owner's Handbook Manual page 142

Safety
Operating fault
If this warning lamp comes on in the
instrument panel, accompanied by
an audible warning and a message,
contact a CITROËN dealer or a
qualified workshop without delay
to have the system checked. The
airbags may no longer be deployed in
the event of a serious impact.
142
If this warning lamp flashes, contact
a CITROËN dealer or a qualified
workshop. The passenger's front
airbag may no longer be deployed in
the event of a serious impact.
In the event of a fault, identified by at
least one of the two airbag warning
lamps, do not install a child seat or seat
an adult on the front passenger seat.
Have it checked by a CITROËN dealer
or qualified workshop.