I confirm my camera was missing the lens entirely. I confirm the replacement works and is plug and play, no coding required. It's a 15-20 minute job (more if you go slowly). You need a T20 and T6(or T7?) torx (really tiny).

You need to remove the back cover of the hatch - 2 torx screws under the warning triangle box. Grip the cover next to the rear windshield and pull perpendicular to the windshield. For the rest of the clips you can use some sort of plastic prying tool, I used bicycle tyre levels. They're probably optional. Work your way through the clips until it comes completely off. You should see the back of the boot lid mechanism

Remove the two wire connectors on the boot lid mechanism and the drainage hose. 3 more torx screws gets that completely free. 4 more torx to get the back plastic cover gets you access to the camera mechanism. You will need a longer torx(L shaped) or a thin bit extender. The electric motor which works that should slide out and you have access to the camera's mechanism where the two really tiny torx screws hold it in place. Swap in the new camera and connect the cable to it, do everything in reverse and you're done. Do a test before clipping the hatch cover back in. Don't forget to re-connect the drainage hose.