I'm sure there are some threads already out there, but I've recently swapped my OEM air susp to coilovers. I had "height high" flashing up until I took the fuse out, and now I have "AFS Off" flashing. Any suggestions on how to turn it off?

There are many ways to deal with the issue. The easiest to set the high sensors in the middle position, it should fix the light problem. Other way is to disconnect air suspension and AFS control modules.