I purchased it, but cannot get it to "remember" locations at which I manually lift the clearance of the car. I have tried multiple times to lift to very high at several steep driveways, both at slow speeds, and with brake on, then proceed to drive over the inclines. Then park. The next trip to the same location results in no recognition of the site by GPS, and no alteration of the suspension. I have to open the control screen every time and lift the car manually. Any suggestions? The SC in Charlotte has no idea what to tell me.