Bests & Worsts Reviews from Amazon

First thought it was not reading my 07 Edge. Looking through the 1 star reviews found this model requires you to plug in, “KOBRA” will appear, key ignition to on position (do not start), press the enter button on the unit. It worked and a three second hold on the scroll button cleared the codes and my idiot lights on the car dash panel. Sure beats unhooking the battery terminals! I know this unit accurately detected the problems as they have previously been coded in a service department. Happy no lights! 4 of 5 stars for the lack of instruction in the included manual and having to google one of the codes.