2002 A4 TDI (B6) (MY FRIENDS CAR)Electric windows/mirrors/reverse/interior lights/central locking/alarm.......have stopped working!i connected vag com but it wont connect comes back ''no response from controller''.Ive been told this is the conveniance ecu located under carpet passenger side front, any one else have similar problems?Has ecu got be replaced or is it an easy repair,?Any advice is appreciated.