CITROEN Grand C4 PICASSO Owner's Handbook Manual page 200

Driving
Assistance in exiting from a
parallel parking space
When you want to leave a parallel parking
space, start the engine.
With the vehicle stationary, 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 the
activation of the function.
Press on "Exit parking slot " in
the touch screen tablet.
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Operate the direction indicator for the exit
side chosen.
Engage reverse or forward gear and
release the steering wheel.
The assisted parking manoeuvre is in
progress. Without exceeding 3 mph
(5 km/h), move forwards and backwards,
aided by the warnings from the "Parking
sensors" system, until the indication of the
end of the manoeuvre.
The manoeuvre is complete when the vehicle's
front wheels are clear of the parking space.
At the end of the manoeuvre, the indicator lamp
in the instrument panel goes off, accompanied
by a message and an audible signal.
The assistance is deactivated: you can take
over control.