R350 Suspension went flat, blew a fuse

[tgmiller77]

Yesterday I noticed that my wife's 07 r350 was sitting really low in the back. I got in it and started it up and it never pumped up. So, I started looking at the air bags and they looked fine and realized the pump was not working. I looked at the fuse box and one of the 40A fuses was blown. I ran to the parts store and replaced the fuse and it pumped up just fine.
Question, is this a sign that something is going wrong or was this just a fluke? Any comments are appreciated and I don't think any warranty work was done on the airmatic system.