My headlamp lens was cracked by a motorway stone. £180 for a new unit from MB! Got a complete unit from germany for a fraction of the cost but I cant see how to change it. I think I need to remove the bumper to change the headlamp unit, I have a replacement unit but not sure where all the bumper screws are. Two headlamp screws are obvious at the top but I think there is one at the wing side and the unit wont come out without lowering the bumper? 
