Daniel shadrin

Hello Friends
two days ago i was faced with the common audi a6 issue
when i put the key in the egnition socket the sterring wheel wont lock or unlock (the steering wheel is always unlocked now) and the system wont go up wich means i cant turn on the engine.
I tried disconecting the steering column module and connecting it back again . Since then when i put the key in the monitor says "An Installed Component is not valid. Please contact Audi Workshop" and nothing works, i cant turn on the egnition.
does anybody knows how can i connect my obd or diagnostic scanner (computer) without activating the switch and turning the egnition on .
the battery is in good condition and i already tried pressing the brake , turning on the high light on and turning on the hazard button simultaneously.
nothing works , please help