FYI, on a 2008 Land Rover LR3, if you get the Air Suspension fault "both switches pressed at the same time", this can be caused by a blown or missing fuse F26. I found this information in the thread on this forum titled "Almost ready to give up - suspension issues" and this helped me to realize that my F26 fuse was indeed missing. I was not able to clear this fault with the F26 fuse missing. (If you're wondering why the fuse would be missing, it appears the local dealer may be running a fraud scheme...) After installing the F26 fuse I was able to clear the fault, I then got a fault for the compressor circuit so I checked the FL10 fuse and it was blown... replaced the FL10 fuse and now the system works again. (These fuses are located in the fuse panel next to the battery on my 2008 LR3) I added this thread to make this information easier to find for anyone else searching for info on this specific fault. On a different topic, I used RSW Solution's 4Dcan software to clear the fault - probably the most inexpensive software to allow you to troubleshoot Land Rover air suspension. It has a minimalist interface design but seems very functional so far.

 

Same issue on my 2005 LR3. Bad fuse F26. New few, issue resolved.