CITROËN 2014 C4 Picasso Handbook page 61

Normal locking
F Turn the key towards the rear of the vehicle
to lock the vehicle completely.
Deadlocking
F Turn the key towards the rear in the driver's
door lock to lock the vehicle completely.
F Turn the key towards the rear again within
five seconds to deadlock the vehicle.
Depending on your version, the
direction indicators flash for a
few seconds, the door mirrors fold.
If your vehicle has an alarm, this
function is not activated by locking with
the integral key.
Access
2
59