My girlfriend and I took my Roadster out for its first 2012 drive, and after eating some lovely ribs we returned to the car and it wouldn't unlock. I walked around to the driver's side to see if the antenna was simply not picking up signal, and I could hear the two beeps normally associated with unlocking but the car remained locked. Stella leaned and looked in her window and said there was an message on the screen saying that the 12V battery needed service. I unlocked the door manually using the keyhole under the door (second time I've had to do that, but no alarm this time), and the car started up okay and I got it back to it's charger. I have an appointment Wednesday (probably) with my ranger Anthony and hopefully he can attend to it then.