My 2018 GLC250 camera got cracked somehow and I am getting a blurry image due to that. I have found a genuine replacement online and purchased it. I am wondering whether it should just be plug and play? I seem to be getting a black screen with a red camera symbol and a cross over it saying no camera detected. It shows the same black screen and symbol when I disconnect the camera. Just want to check whether the camera I purchased is faulty or that I have to get it calibrated by some computer for it to work. Thanks for any help in advance.