I did this two weeks ago on my 182. There is a guide on here somewhere that shows how to remove the bumper. Essentially, there is a torx screw in each wheel arch, and a bolt at the top of the bumper where it meets the wheel arch. There are two clips on the top of the grille that must come off too. If you want a total removal, you have to undo the undertray bolts too, but I didn't bother. Then pull each side out and the whole bumper comes forwards. The washer jets are held in by a 21mm nut iirc. Quite simple and easier with two people to support the bumper.
Annoyingly, a week after doing this someone drove into the back of the car, so now I'm waiting to see if it is a write off. :rage: