I don't know if this is a "problem" or just a normal thing, but my RS has done this since day one. I have a factory alarm. When I press the unlock button and get in my car, the "door open" light is on. Even when all the door are closed. The door light stays on until I put the key in and to acc. I think. Same thing for when I get out of my car. The door open light is on once the key is out and won't turn off unless I press the lock button on my alarm.