T650 Error code M4404 No communication with Aux Controller. I have checked all my fuses and switched around my relays. Cleaned all my grounds. I checked the wiring plugs, I don't see any worn wires. I suspect my Aux controller is bad but would like to confirm before I purchase one. I took the controller off, didn't see any hot spots in it. (also I can not switch into rabbit mode.). Any ideas on what to check? Do these aux controllers go bad very often?