golf v5 fly by wire throttle problems
 

Hi everyone i need some help solving my throttle problem.
The car is a 2002 golf v5 that needs the fly by wire throttle body replaced.
Does anyone know if i can just replace the throttle body, plug it in and it will work or does the car need the ECU reset. Also can i use a second hand part as long as the part numbers are the same and will i need to replace to sensor on the pedal. Any help will be much appreciated thanks.