See also:

Starting the engine
Insert the key in the ignition switch. The system recognises the starting code. Turn the key fully towards the dashboard to position 3 (Starting). When the engine starts, release the key. ...

Checks
Unless otherwise indicated, check these components in accordance with the servicing booklet and according to your engine. Otherwise, have them checked by a PEUGEOT dealer or a qualified workshop. ...

Seat backrest angle
Push the control rearwards. ...