No hissing & leaking

My X5 is leaning lower on one side (driver side) & higher on the other. I'm requesting help with solving this problem. I checked all fuses and they're fine. The drive isn't affected in any way (to my knowledge), but the leaning part is crazy. Can anyone help me with this problem? I attached photos of what it looks like & any advice is greatly appreciated.

Same thing happened to my '01 4.4i. In my case, it turned out to be a leak in one of the air bags used in the air suspension. However, there's also a known issue with loose connections to some of the air suspension components (located under the spare tire). If you want to check that first, take a look at the DIY article on XOutpost dot com: http://www.xoutpost.com/file-x5tips.htm