I have to pull the battery to shut the compressor off. I've never had this issue before and when I had the rear bags go flat due age, pulling the fuse stopped it then.

It's bloody weird!

I've not had this problem before and this is really odd because I haven't touched any wiring, only took 2 air lines off the valve unit to do the rear suspension.

I'm hoping I haven't stuffed something up going through all the diagnostic stuff trying to level it