CITROËN DS4 Owner's Handbook Manual page 163

Child seat in the front
"Rearwards-facing"
When a "rearwards-facing" child seat is
installed on the front passenger seat , it
is essential that the passenger airbag is
deactivated. Otherwise, the child would
risk being seriously injured or killed if the
airbag were to inflate .
"Forwards-facing"
When a "forwards-facing" child seat is installed
on the front passenger seat , adjust the
vehicle's seat to the intermediate longitudinal
position with the seat back upright and leave
the passenger airbag activated.
Intermediate longitudinal
position
161
Child safety