Greetings all! Long time lurker, infrequent poster here.
My LED Charge ring had 2 segments out, which completely bothered my OCD. I looked on the web for how top replace it and didn't find anything, so I thought I'd share my experience.
I bought one online for about $90 and had it shipped to me. I was unsure how difficult it would be to replace, but it took me less than 1/2 hour.
I took off the front driver's side wheel and took off the fasteners that hold the wheel well housing on (I only took off the ones towards the rear of the well - that was enough). Pull it loose and you will have access to everything.
I unplugged the light ring and discovered the ring assembly is held in with tabs. I pushed the tabs in at the bottom (I used a screwdriver with a fat blade) and then pressed in the ones at the side (doing this at the wheel well), I then opened the hood and you can see the top tab- i pushed that in with the screwdriver and was able to take the ring out. I then inserted a small screwdriver to remove the "old" door (a new door was not included with the new assembly).
I cleaned the area under the old ring and waxed it. I then reversed the procedure (inserted the wire and snapped in the assembly) and then put the old door back on and checked it. Voila! All of the light rings were operational!!!
It was pretty easy! Don't be afraid to try it!
My light ring started not working s=right after the warranty. My dealer is pretty useless on repairs to my car.
Your mileage may vary. The pics are (hopefully) below.