DanDuck

Hello, I recently changed out my screen for one with carplay and what not, I got everything working, audio, connectivity etc but now my MMI controls wont work. they dont light up and they dont have any function, Im able to access the OEM MMI menu but its stuck on NAV, I was only able to get it to this screen by using the steering wheel button. Ive had a look online in various places to find an answer but im coming up short, Ive checked all the wriring again on the new unit and everything is back where it should be, ive tried fuses but all the fuse diagrams ive found are different to mine so im not sure what im really looking at. any help would be greatly appreciated as im pulling my hair out over this