I'm not the brightest bulb in the 12 pack and am gonna try and fix the broken lumbar setup in my '07 GX470. I'm selling it to a family member and want everything just right... The first thing is to remove the lumbar switch. I need to get that plastic shroud off. I can see a philips screw at the rear. Is there a simple way to get that switch out without removing the cover. AND...if I need to go deeper, how in the world do you guys pop off the back of the driver's seat to expose th lumbar motor?