A windshield with "Lane Departure Warning", "Forward Collision Alert", etc. may require calibration. Calibration is not needed more than 95% of the time. Our installers do not unplug the camera(s). Your vehicle's notification system should let you know if there is a problem. This is a service not included in our price. Not all of our installers have the equipment but if available we can quote you a price. If calibration is needed and we can not supply the service your vehicle would need to be taken to the dealer or an aftermarket calibration service (The cost for this service varies a lot).