So, I've been having an intermittent EAS compressor issue. Normally when you start the car from sitting overnight I hear the compressor start to run for a few. Recently and after my trip out to Colorado I've noticed that the compressor does not kick on in the mornings and shortly after start up the orange suspension fault light illuminates. Anywhere from 2-6 cranks will usually kickstart the compressor and I will have full function of the terrain response controls. I pulled the relay for the EAS and jumpered between the 2 large prongs and I get the compressor to kick on, which leads me to believe the compressor is good. I get a C1A13 code from my GAP tool (not releasing pressure) I may try to replace the drier canister on the compressor and rebuild the exhaust valve. Anybody ever had this issue and rebuilt the compressor exhaust valve and replaced the drier canister?

 

I would get the occasional orange light and slow to rise message after about 15mins of driving which eventually turned in to every time pulled out of the drive. I had a spare compressor that i rebuilt so put that in and no issues since.
Rebuilt my original compressor and that now lives under the middle seats just in case, both had the driers clogged with powder which prevents the filling and releasing.

 

That can also be the fuse alongside the relay - it was changed from 60 amp to 70 amp and they occasionally burn the contacts but do not blow the fuse, so pull it out and check.