CITROËN C4 Picasso Owner's Handbook Manual page 196

Driving
Operation
Assistance with parallel parking
manoeuvres
When you have identified a parking space,
Press this control at the steering
wheel,
or
Select " Park Assist" in the
"Driving assistance" menu
of the touch screen tablet to
activate the function.
This indicator lamp comes on in the
instrument panel to confirm activation
of the function.
196
Limit the speed of the vehicle to
a maximum of 12 mph (20 km/h)
and select " Enter parking slot"
in the touch screen tablet.
To enter a parking space, the system
does not identify spaces that are clearly
smaller or larger than the vehicle.
Operate the direction indicator on the
parking side chosen to activate the
measurement function. You should drive
at a distance of between 0.5 m and 1.5 m
from the row of parked vehicles.
Drive slowly following the instructions until
the system finds a free space.