Depending on the year and configuration of the attachment locations can vary.
Front bumper
-open the hood.
-under the hood, Unscrew the two screws near the headlight and two on the grille that secure the upper part.
-(if any) Unscrew the two screws in the lower grille.
-take out the caps on the perimeter of the lower part (inserted from the bottom up).
-wrenched the wheel to the side.
-wheel arches take out the caps and removed the wheel arches (the front part).
-for wheel arch liners Unscrew one screw (depending on the model, screws may be two) on each side (spun upwards) holding the corners of the bumper to the wings.
-release the clamps that secure the corners to the fenders (pull toward the engine and yourself).
-with the assistant pulls the bumper forward from rails (look for wires).
-release the connectors for fog lamps (easier to remove chocks from light bulbs), turn signals, Parking sensors and temperature sensor (if any).
-if you have headlight washers, disconnected the hoses.
Rear bumper
-open the trunk lid.
-in the trunk remove the plastic cover of the rear panel.
-for covering the back panel, below the rear lights, Unscrew the two nuts.
-we release the side Luggage compartment trim (need to access the inner part of the wings).
-in the inner part of the wings Unscrew one screw on each side.
-take out the caps on the perimeter of the lower part (if any).
-wheel arches take out the caps and removed the wheel arches (rear).
-for wheel arch liners Unscrew one screw on each side (spun upwards) holding the corners of the bumper to the wings.
-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 Mercedes CLK C208