Ck the software!
I have a 2006 LR3 with 38,000 miles. I just replaced the compressor as the exact same thing happened to me in regards to the Rover dropping down to access height. I can attest that it does make for a very jarring ride. In addition to the the compressor, I also had the software for the air suspension updated. I was told the this was a common enough problem with the older LR3's because the old software had the compressor going on and off far too often. The software update is easier on the system.
I have a 2006 LR3 with 38,000 miles. I just replaced the compressor as the exact same thing happened to me in regards to the Rover dropping down to access height. I can attest that it does make for a very jarring ride. In addition to the the compressor, I also had the software for the air suspension updated. I was told the this was a common enough problem with the older LR3's because the old software had the compressor going on and off far too often. The software update is easier on the system.