Depending on the year and configuration of the attachment locations can vary.
Front bumper
-open the hood.
-under the hood, Unscrew the four screws (or two, depends on the year of issue) that secure the grille.
-Unscrew the two screws (spun down) that secure the upper part.
-Unscrew the screws at the bottom (spun up).
-Unscrew the two nuts at the bottom of the grille (if any).
-wrenched the wheel to the side.
-wheel arches take out the caps and removed the wheel arches (the front part).
-the fender liner, Unscrew the screws holding the corners of the bumper to the wings. Then (if you have one) remove the metal clip (pull to the side of the engine and to the wheel).
-with the assistant pulls the bumper forward from the rails in the wings (look for wires).
-release the connectors for the fog lamps and Parking sensors the temperature sensor (if any).
Rear bumper
-open the trunk lid.
-remove rear and side Luggage compartment trim.
-the side casings (inside the wings) Unscrew two screws on each side (twisted upside down).
-the plating of the rear panel Unscrew the four nuts.
-Unscrew the six screws that secure the lower part (spun up).
-wheel arches take out the caps and removed the wheel arches (rear).
-the fender liner, Unscrew the screws holding the corners of the bumper to the wings.
-with the assistant pulls the bumper back from the rails (look for wires).
-snap together the connectors of the equipment (if any).
How to remove front and rear bumper Mercedes CL C215