Depending on the year of manufacture, the mounting points differ slightly.
Front bumper
-open the hood.
-under the hood, we pull out three pistons. Which fix the upper part of the bumper.
-from the bottom side, we Unscrew the screws and pull out the pistons that attach the lower part.
-turn the wheels out of the way.
-in the wheel arches, pull out the pistons and release the slats (front).
-we take the slats aside and 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 locks in the fenders and pull the bumper forward (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 plugs and Unscrew two screws behind them.
-Unscrew the screws and pull out the pistons that attach the lower part.
-in the wheel arches, we pull out the pistons and release the undercarriage (the rear part).
-with an assistant, we release the locks in the fenders and carefully pull the bumper back (look for the wires).
-disconnect the electrical connectors.