The Comfort Access on my new 4.8 seems a bit quirky. Sometimes it seems to work intermitently. When I try to open the door sometimes it does not work. I pull my FOB out of my pocket and hold it and will work or sometimes jiggle it a little to get it to work. Doesn't happen all the time, but it does happen quite frequently. I have also experienced a message on the NAv screen that says "remote contol not in the vehicle or may be malfunctioning". Anyone experience the same thing? What's going on? $1000.00 option !!Could my batteries need replacing after just 1 week? bad FOB?