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truck says CF on controller and serv 4wd and turns off when trying to start
hello my truck has recently started doing this and im not sure where to start I spoke with my dealer they said no recalls for my truck and every once in a while my truck would throw a cf code on my trailer brake controller it is OEM and my display says heavy electric trailer brake disconnected and it says service 4wd but I am not connected to a trailer and when I do connect it everything seems fine I do not know if my trailer breaks actually engage cause I dont want to take it on the road without working breaks and I can engage those code my flooring it no crazy speeds but when I turn the truck off like the computer resets and my cruise control does not work and sometimes when i turn my key to let the element heat up for 30 sec(40 degrees f ) i turn the key and the whole dash shuts off when i release the key the dash lights up so i would have to cycle key like 3 times take it out then retry and it will turn on i read while ago that my can bus is not working any help would be appreciated it wont let me upload a video of my truck display turning off when turning key
