Depending on the year of manufacture, the mounting points may differ slightly.
Front bumper
-open the hood.
-under the hood, pull out the pistons and remove the trim (if present).
-Unscrew six screws and pull out two pistons that attach the top part.
-Unscrew the two screws (screwed from the bottom up) that attach the lower part of the bumper.
-turn the wheels out of the way.
-in the wheel arches and from the bottom side, we Unscrew the screws that attach the undercarriage (the front part).
-(if available) release the fender linings from the bumper (held on latches).
-Unscrew one screw on each side (twisted from the bottom up), which attach the corners of the bumper to the fenders.
-with an assistant, we release the latches in the wings (we pull the corners on ourselves).
-pull the bumper forward from the rails in the fenders (look for the wires).
-disconnect the electrical equipment connectors (if any).
Rear bumper
-open the trunk lid.
-in the opening of the trunk, we pull out the caps and Unscrew the screws.
-in the wheel arches, we Unscrew the screws that attach the undercarriage.
-(if available) release the fender linings from the bumper (held on latches).
-Unscrew the screws on the bottom side.
-behind the wing flaps, we Unscrew the screws (screwed from the bottom up) that attach the corners to the wings.
-release the latches in the fenders (pull the corners of the bumper on themselves).
-with the assistant carefully pull the bumper back (look for the wires).
-disconnect the electrical equipment connectors (if any).