Use the EAS software to read the current height settings and write them down as a point of reference. Ignition off and tailgate open to freeze the suspension. Jack the car for access not forgetting axle stands for security, remove defective sensor and replace. Remove axle stands and the jack, start the engine, close the tailgate. wait for the suspension to come up and then measure the heights at each corner and adjust as necessary at each height setting with the EAS software. Do a search here for suspension heights or look at RAVE. Irish Rover has posted the height settings many times.