not sure if anyone knows what holds the clock memory for the monitor and cluster clock becouse these wont hold the time so think this has something to do with it

19. The radio, sunroof, and other "ignition" triggered accessories are available for a period of time after the car is turned off until a door is opened.
20. The fact that the car goes into "sleep" mode after 16 minutes of inactivity to reduce battery drain and eliminate dead batteries from "left on" accessories (lights, etc).

plus does anyone know how to set up 19 and shouldnt 20 stop my batt going flat?