Both generations of the Citroen Xsara Picasso bumper attached almost the same.
-open the hood.
-under the hood, Unscrew the three screws (spun up) that secure the upper part and release the two latches.
-Unscrew the three screws (spun upwards) holding the bottom of the bumper.
-depending on which side we will disassemble, wrenched the wheel.
-wheel arches take out the rivets and removed the arch liners (no need to remove).
-for wheel arch liners Unscrew two screws on each side that attach the angles to the wings (spun up).
-pulls the bumper forward (don't want to break the wires).
-remove the connectors from the equipment (if any).
-open the trunk lid.
-in the side panels of the trunk open stub (needed to access the rear part of the rear lights).
-through the openings presses a flat screwdriver on the clips and take out the rear lights.
-under the rear lights Unscrew one nut on each side.
-wheel arches take out the rivets and removed the fender liner.
-for wheel arch liners Unscrew one screw on each side holding the bumper corners to the wings.
-we release the latch in the opening of the trunk and in the lower part.
-pulls the bumper back.