Orange light on gearshift & battery drain issues...

[FSETH]

I saw this thread regarding battery drain and if your X is going into sleep mode.

http://www.xoutpost.com/bmw-sav-foru...ery-drain.html

One of the posters says one way to tell if your X is going into sleep mode is by the orange light on the gearshift. They say it should turn off and stay off approximately 15 minutes after you turn of the engine. For reference, it would be the orange light next to the "P" for park if your X is parked and turned off.

Can anyone tell me if their light goes off after 15 minutes or so and stays off or if their light is on 45+ minutes after they have parked the car? Mine seems to stay on (locked or unlocked). As far as I know, I have not experienced any battery drain issues. I just replaced my battery, but it was at least 3 years old at minimum. Just trying to see if this holds any water.