Depending on the year and configuration of the attachment locations can vary.
-open the hood.
-under the hood, Unscrew the four screws (or two, depends on the year of issue) that secure the top.
-Unscrew the two screws at the bottom (spun up).
-(if any, depends on the year of issue) Unscrew the two nuts at the bottom of the grille.
-wrenched the wheel to the side.
-wheel arches free lockers (front part).
-for wheel arch liners Unscrew one screw on each side (spun upwards) holding the corners of the bumper to the wings. Then 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).
How to remove front and rear bumper Mercedes CL C216