Bugs--welcome to the "failed lock" club. If I had a dollar for all the failed 70 series lock mechanisms I would be a friggin millionare!!! Do as RLK says above. Then To "pop" off the bottom part of the panel, slide a nice stiff putty knife between the panel and the door and it should just "pop" out the little snap from the recepticle on the door itself. Once done, "lift" the panel up as the panel edge with the nice rubber window gasket has a lip behind it that goes behind the metal edge of the door. Plan on $90-$120 for window mechanism depending where you buy your valvo parts. Good luck!