CITROËN C4 Picasso Owner's Handbook Manual page 270

Practical information
Press the tongue, slide the box cover to the
centre and remove it for access to the other
tools (jack and wheel bolt head finisher
removal tool for alloy wheels).
272
Stowing the tools
Return the tools to the box and stow the
box in the vehicle's boot.
Wind in the carrier by turning the
wheelbrace clockwise: once the cable is
fully wound in you should no longer feel
any resistance.
Stow the other tools in the locations
provided in the boot.
A puncture wheel from the vehicle
cannot be fitted under the vehicle. It
must be carried in the boot. Use a cover
to protect the boot.
Putting the spare wheel back in
place
Stow the corresponding tools in the box
and close the cover.
Position the tool box on the ground.