Another expert tip is this, most vehicles these days have the advanced driver assist system. Which is the camera that's in your windshield right there. A myth that is told by some shops is that if you don't disconnect the camera, you don't have to calibrate the camera, which is not true. anytime you're taking the camera out of the bracket and putting it back in the windshield, Camera needs to be recalibrated to make sure that it is positioned correctly for all safety features working.