I have a quick question regarding how often the computer should make ride height adjustments. My LR3 seems to make a change every 5-10 minutes, at least those are the changes large enough for me to notice and for the compressor to kick on. Is this normal?

 

Not necessarily, though the sensors are continuously monitoring heights. I notice that sort of thing at stops on weird angles mostly. If you have a Nav system, you can put it on the 4x4 info screen and see if one wheel is going out of whack witch might indicate a bad height sensor on that wheel. You might also have a leak somewhere, you can go after it with a spray bottle of soapy water and see if you have a leak..