It does go on and on! The old lead used to work, then it stopped working. i bought the nano to replace it, and then another lead as well. the nano and the new lead using various versions of techstream all connect to the car. but neither will interrogate any module. i will check wiring in the obd port this morning and then see what is next. i appreciate your thoughts thus far.Did you test the old lead on another car? Goes on and on this one doesnt it!!!!