Started w/ some random raising/lowering (occasionally followed by "Suspension Fault" indicator and "Normal Mode Only")...
Was told it needed front-left height sensor (and the 4x4 info screen confirmed that tire was mis-reading).
Ordered the sensor (no way was I paying the dealer $500+ to install a $50 part.

While waiting for the part (and limiting my driving - I work from home so this isn't too difficult)...I ordered the IIDTool as well.

Then one day I heard what I assume was the compressor (or maybe the relays) making a chattering noise right after I started her up followed by Suspension Fault light and she's resting on her stops now.

Further checking things out, I just discovered the 60A fuse is blown.

I'm planning to replace the height sensor (and the breaks, but that's unrelated) on Saturday and hoping to just throw a new fuse in and recalibrate w/ the IIDTool, but I'm curious about that chattering noise and the blown fuse - any suggestions on what might have caused that?