Sounds like your going to have to go back to basics with this and start from the begining. 1 use only one scanner 2 do the hazzards work without the key in 3 does the ignition come on (check all dash lights) and will the engine turn over 4 does the car start 5 do all the lights work eg brake lights,fog,side,indicators etc etc and chech stereo and has any phone or ipod etc etc systems been fitted let us know what the results are please