Baically the same principle from what I gleaned in the development of my Llams for Jeeps module, apart from using a normally closed air system (they can top-up with air) requiring pumping when raising or lowering. They don't have extended or super-extended mode nor do they have safe mode, but the suspension height adjusts on a sufficiently regular basis that it recognises Llams adjustments in about the same time that LRs do. The latest ones even adjust a short while after the ignition is switched off to make the vehicle look level when parked!

