First of all both back side doors don't even try to attempt to move at all, petrol flap has always been closed I have also checked fuse & because I don't know which is for what I checked them all, tried it also with vehicle running still problem remains the same but I have notice that the passenger back side door which I believe the bracket for the door was loose before it started to play up. however before these doors problems my radio along with reversing camera sometimes it turns off & it's comes back on but lately it's been off & no I didn't buy it privately. I have reser the car also and still don't fix the problem.
Can't post photos now as its now night time in my country
Kind Regards
Doug