If your rear view camera isn't working properly, there are a few things you can do to try and fix the issue. First, check to make sure that the camera is turned on in your vehicle's settings. If it is, then the next step is to clean the camera lens. Sometimes dirt or debris can build up on the lens and cause the image to be fuzzy or distorted. Once you've cleaned the lens, if the problem persists, you may need to reset the camera itself. This can usually be done by pressing and holding a button on the camera for a few seconds until it resets itself. If none of these solutions work, then you may need to take your vehicle to a mechanic or dealership to have them look at the camera and see if it needs to be replaced.