Depending on the year of the attachment points are slightly different.
Front bumper
-open the hood.
-remove radiator grille.
-Unscrew one screw (is twisted from top to bottom) between the headlamps.
-from the bottom Unscrew the screws that secure protection.
-depending on which side we will disassemble, wrenched the wheel.
-in the wheel wells, Unscrew the screws holding the fender liner (front part).
-move the wing flaps to the side and Unscrew one screw on each side holding the bumper corners to the wings.
-with the assistant pulls the bumper forward (don't want to break the wires).
-snap together the connectors of the equipment (if any).
Rear bumper
-open the trunk lid.
-in the opening of the trunk, Unscrew the six screws.
-Unscrew the screws that attached the fender liner to the bumper (in the wheel arches and floor).
-for wheel arch liners Unscrew one screw on each side holding the bumper corners to the wings.
-from the bottom, between bumper and body, Unscrew the three screws.
-with the assistant pulls the bumper backwards (look for wires).
-snap together the connectors of the equipment (if any).
How to remove front and rear bumper Renault Scenic 2 (2003-2009)
How to remove front and rear bumper Renault Scenic 3 (2009-2015)
How to remove front and rear bumper Renault Scenic 4 (after 2016)