PEUGEOT RCZ Handbook page 122

Intermediate longitudinal position
Passenger airbag OFF
Refer to the advice given on the label present on both sides of the
passenger's sun visor.
To assure the safety of your child, you must deactivate the
passenger's front airbag when you install a child seat in the
rearwards facing position on the front passenger's seat.
Otherwise, there is a risk that the child could be seriously injured
or killed if the airbag were deployed.
For more information on deactivating the airbag, refer to the
"Safety" section then "Airbags".