See also:

Horn
Audible warning system to alert other road users to an imminent danger. Press the central part of the multifunction steering wheel. Use the horn moderately and only in the following circumstances: ...

Deadlocking
Deadlocking renders the exterior and interior door controls inoperative. It also deactivates the manual central control button. Therefore, never leave anyone inside the vehicle when it is deadlocke ...

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. ...