Aust 2012 PX Ranger 2.2 Major Problems need HELP

[StightDreamz]

Hi
So i am currently 3,500km away from home and my Ranger has cracked it again. About a month ago after getting Forscan and watching YouTube videos decided to try to adjust my wheel size to correct my speedo as I had just fitted bigger wheels, after doing this I had a dash full of lights and many erratic gearshift issues. As a total novice and 63yr old I had no idea, i tried setting it back to the old setting etc but nothing worked, i then found out that on the early PX Ranger you cannot adjust the speed. I eventually got a guy to come out and sorted it all and left with the little gear light with the ! in the middle and no cruise control. I have now driven across Australia without a issue other than the one light and no cruise control, then today bang its all back again and I stuck in Warrnambool Victoria with no idea what to do to try and fix it. Any help etc that can be given would be great, there are a whole lot of new fault codes as there was last time for abs, drive line, dashboard etc that i cant get rid of same as last time and a normal scan tool finds no faults