Hi All, I need to repair some rust in the top of the rear wheel arch on my L322. There seems to be rust in both panels where the inner and outer arches meet. I am talking about the top point of the arch. Anyone tackled this before? Ideally I would like to remove all the interior trim to expose the inner wheel arch. I can't find instructions for this.
Cheers.

Hi,

I think you might be talking about the same area I have repaired, on mine it was the NS that needed sorting out.

Click image to enlarge

I should have added that whilst your in that area of the car take the plastics off the sill and take a look, fortunately mine was solid after a previous repair so I just gave it a coat of Hammerite Waxoil Underbody spray and they are quite tidy and rust free.

You may as well take the pain now than leave it.

Hi, I am replacing the outer sills and jacking points on both sides. I have the ebay panel for the door shut area of the arch that extends right around the whole arch to the rear bumper cover. I seem to have rust at the top of the arch in both the inner and outer skins. As you indicate, the worry is setting fire to material and wiring inside the wheel arch. It seems to be only the offside (driver UK) that has this problem on mine. What is not obvious, is how to repair the inner skin.
Cheers.